WO2020156620A1

WO2020156620A1 - Method for treating a fiber-containing material using a dust binding agent and device for carrying out the method

Info

Publication number: WO2020156620A1
Application number: PCT/DE2020/100061
Authority: WO
Inventors: Randolf NOTT
Original assignee: RRNO-Research GmbH
Priority date: 2019-01-31
Filing date: 2020-01-31
Publication date: 2020-08-06
Also published as: DE102020102458B4; DE102020102458A1

Abstract

The invention relates to a method for treating a fiber-containing material, preferably hay or straw, using a dust binding agent, the method comprising the following steps: - providing a fiber-containing material containing dust particles; - loosening the fiber-containing material; and - spraying a dust binding agent, which comprises an aqueous-based film former, on the fiber-containing material, wherein the dust binding agent is atomized to form droplets, dust particles are bound to fibers of the fiber-containing material and/or a cluster formation of the dust particles is favored. The invention also relates to a corresponding device.

Description

Process for treating a fibrous substance with a dust-binding agent and device for carrying out the process

The invention relates to a method for treating a fibrous substance with a dust-binding agent and a corresponding device for carrying out the method.

In animal husbandry, the dust contamination of the bedding used, for example straw, is a major problem. In horse husbandry, litter as well as feeding with the basic hay feed can cause serious health problems due to dust. Dust problems in organic pig farming are also very common due to the straw used as bedding.

Smallest particles in solid or liquid state are generally defined as aerosols, which are more suspensory in a gaseous medium and are created by atomization or pulverization of liquid or solid substances. Bioaerosols are complex airborne particles of biological origin, which are generally divided into animate and inanimate particles. Animate particles represent the entirety of the air constituents with biological origins of human, animal, plant and microbial origin (e.g. bacteria, fungi, viruses, mites, yeasts, protozoa, endotoxins). Depending on their origin, these can cause allergic, toxic and infectious reactions in the organism. Dusts represent the inanimate part and are defined as disperse distributions of solid substances in gases, which can arise through mechanical processes or through whirling. Animate and inanimate particles form common agglomerates, with about 80% of the airborne microorganisms attached to particles. This association is also referred to as a cluster, with dust assuming the role of a carrier (carrier), since the active constituents of the bioaerosol adhere to the dust particles.

The physical particle properties play an important role in particular for the health of the horse, since the lungs act as a kind of filter. This prevents the alveoli (the smallest functional units of the respiratory tract) from being wetted with inhaled particles. Although a large number of the inhaled particles through the mucous membranes of the Respiratory tract, particles can penetrate into the alveoli depending on their size, chemical properties (hydrophilic or hydrophobic), shape and density (Art T. et al., Environmental Control of Respiratory Disease. Equine Respiratory Diseases, International Veterinary Information Service, New York, 2002).

The size of a particle is of crucial health relevance for humans and animals. Particles can be divided into fractions based on the aerodynamic particle diameter. The division of the particles into fractions has been defined differently in the literature. In the past, a distinction was made between coarse dust (50 - 500 pm), medium dust (10 - 50 pm), fine dust (0.5 - 10 pm) and fine dust (0.1 - 0.5 pm) (Melhorn G., textbook of Animal hygiene /., Fischer Verlag, Jena, Stuttgart, pp. 89-120, 1979).

A further classification is made in connection with information on emission factors or mass concentrations. This is referred to as PM (Particulate Matter), whereby PM10 and PM4, for example, contain all particles that are described by a separation curve with a separation rate of 50% below 10 pm and 4 pm, respectively. According to ISO 7708: 1995 (Beuth-Verlag, Berlin, page 3), the PMio fraction is to be equated with the thoracic fraction (DIN EN 481: 1993, Beuth-Verlag, Berlin, page 4).

Various studies have been carried out on the effects of increased airborne dust concentrations in the stable air on the health of horses. The most common respiratory diseases, some of which are already known as “occupational diseases” of sport horses, are COB (chronic obstructive bronchitis - English: COPD - chronic obstructive pulmonary disease), RAO (recurrent respiratory disease, which can only be caused by changing the position or feed or using it can be eliminated or alleviated by bronchodilators) and LAD (infectious inflammation of the respiratory tract). The level of particulate matter is not the only decisive factor here. The size of the respective particles has a decisive influence on the respiratory disease potential, whereby the thoracic (PM10) and the alveolar particle fraction (PM4) are particularly relevant. Particles of this size can penetrate into the smallest functional units (alveoli) of the respiratory tract and damage it. Bitterle (Bitterle E., Oxidative and inflammatory mechanisms of target cells of the alveolar epithelium after exposure to ultrafine aerosol particles at the air-medium boundary layer, Diss., Technical University, Munich, 2004) describes above all as the place of deposition for particles of size 10 pm the throat and throat area (impaction). According to Seedorf and Hartung (Seedorf J. & Hartung J., dusts and microorganisms in animal husbandry, KTBL 393, ISBN 3784321453, 2002), the majority of large particles with a diameter> 5 pm are caused by impaction in the upper area of the respiratory tract secreted. Fine particles, on the other hand, can penetrate deep regions of the respiratory tract, the fine fraction (<5 pm) being deposited there by sedimentation and impaction. According to Art et al. (Art T. et al., Environmental Control of Respiratory Disease, Equine Respiratory Diseases, International Veterinary Information Service, New York, 2002), the majority of particles <0.5 pm in size are secreted from the respiratory tract by expiration, whereby by diffusion smaller particles (<0.1 pm) from the bronchioles get into the adjacent tissue.

Zeitler (Zeitler MH, hygienic importance of the dust and germ content in the air in the barn, special print from "Bavarian Agricultural Yearbook", lectures of the XXV Weihenstephan University Conference, 65th year publ .: TU Weihenstephan, Chair of Animal Hygiene and Livestock Science Weihenstephan. 151-165, 1988) classifies the airborne germs transported by dust particles as particularly dangerous for animal health because they can have infectious, toxic or allergic effects. The author attributes a possible overload of the mucociliary clearance services (unspecific defense processes of the respiratory tract respiratory tract) to the permanent mechanical irritant effect of particles. If these are overloaded, the cilia (5 - 10 pm long cell processes) can be impaired or even lost. As a consequence, the resistance of the respiratory tract is reduced, which, according to Mayr (Mayr A., infectious diseases, In: Dietz O., Huskamp B. Handbuch Pferdepraxis 2nd edition, Enke Verlag, Stuttgart, 346-361. ISBN 3432292627, 1999) even optional pathogenic germs can trigger symptoms of the disease and lead to unspecific coughing.

Various studies have shown that the usability of the horse for equestrian sport was caused by chronic changes in the respiratory organs in over 30% of the horses examined. Other studies predict that about 80% of horses kept in stables have symptomatic respiratory damage (McPherson EA & Thomson JR, Chronic obstructive pulmonary disease in the horse: Nature of the disease, Equine Veterinary Journal, 15, 203-206, 1983).

The RAO (Recurrent Airway Obstruction) mentioned at the beginning is a recurrent airway obstruction, which represents an irritated state of the lungs resulting from an allergy. A distinction is made between infectious agents (bacteria, viruses and lung parasites), environmental antigens (mold spores, pollen, mites, as well as dust from hay and straw) and chemical-physical stimuli (harmful gases, dust particles). It has not yet been clearly researched which of these factors can be assigned a higher weighting (Marti E. et al., Relationship between respiratory diseases and allergies in horses, FFP training event on horse health on April 23 and 24, 2005 in Münster-Handorf. Subject : Immune diseases in horses, 2005), whereby Seedorf and Hartung (Seedorf J. & Hartung J., dusts and microorganisms in animal husbandry, KTBL-Schrifl 393, ISBN 3784321453, 2002) the origin of the disease in an allergic reaction, primarily to mold spores and airborne particles of hay and straw. McPherson and Thomson (McPherson EA & Thomson JR, Chronic obstructive pulmonary disease in the horse: Nature of the disease, Equine Veterinary Journal, 15, 203-206, 1983) have shown that the disease is directly related to the content of airborne particles ) already in 1983.

Both airborne particles and mold spores can be responsible for a variety of diseases of the respiratory tract. These include, for example, airbag mycosis (inflammation of the airbag), which according to Markus (Markus RG, studies on the therapy of airbag mycosis of the horse - ligature of the internal carotid artery by means of transendoscopic clip application, diss., Veterinary University of Hanover, 2002) primarily by the mold genera Aspergillus, Penicillium and Candida is caused. According to Franz (Franz C., The View into the Horse, In: Autumn & Winter 2003/2004, 2003), the cause of an acute to chronic inflammation can also be the ingress of foreign bodies and coarser dust particles. Grabner (Grabner A., Diagnosis and Therapy of Airbag Mycosis of the Horse, Veterinary Practice, 2, 10-14, 1987) describes the cause of airbag mycosis in somewhat more detail. He states that the entry of the mold through the tube flaps, which open with every swallowing act, is responsible and suspects that the airbag is colonized by both Mold infestation of the feed as well as stall-specific conditions would be dependent.

Studies by the University of Ghent (Jolien Van Cleemput et al., Deoxynivalenol, but not fumonisin Bi, aflatoxin Bi or diesel exhaust particles disrupt integrity of the horse's respiratory epithelium and predispose it for equine herpesvirus type l infection, Veterinary Microbiology, Volume 234, July 2019 , Pages 17-24) have shown that, among other pollutants found in hay and straw, such as aerobic mesophilic germs, yeasts or mold, mycotoxins are not only of health significance for the animal, but also for the people working in the stable. The investigations have shown that hay or straw often contains toxins such as A-trichothecenes, B-trichothecenes, fumonisins, or even cerealenone metabolites, which can damage human and animal health.

The respiratory diseases mentioned can usually not be completely cured. Expensive medications and therapies can only prevent the worst or alleviate the symptoms of the disease, which can result in high costs for the treatment of respiratory diseases. In addition, general examination and consultation costs are incurred for each treatment. In the case of more severe interventions, accommodation and monitoring must also be financially rewarded.

In the same way, people can be harmed to their health by the dust in the barn.

With regard to the reduction of airborne particles in horse husbandry, the primary focus must be on the treatment of the main sources of contamination with suspended dust, which include various bedding materials (wheat straw, chips, flax, hemp), roughage (hay, haylage) and various concentrates (oats, barley, Represent compound feed).

So far there is no practical solution to the problems with straw and / or hay, apart from the use of alternative and much more expensive bedding materials. Even in ecological pig farming with so-called deep litter (ie straw), the dust problem has so far been completely unsolved. In horse husbandry, the problem is exacerbated by the fact that the animals pick up the litter and for many hours rest on it, the dust contained in the straw being whirled up and inhaled by the breathing process.

Water is currently the "medium of choice". Here, watering or wetting the hay primarily serves to reduce the dust. For this, water is poured from a watering can over the hay or the hay is immersed in water to wash off dust particles and thus prevent the horse from breathing them in when eating.

Hay steamers are also known, for example the HAYGAIN hay steamer HG-2000 which works with a steam generator. The duration of steaming hay depends on the type of hay, the hay density and the outside temperature and is on average between 50 and 60 minutes. The HAYGAIN HG-2000 has a capacity of over 45 kilos of hay and is therefore intended for use in larger companies. Another hay steamer is known as the "Perfect hay steamer box" and is available with a capacity of 300 and 560 liters. It is essentially an insulated box into which the hay is placed and steam is injected. Another hay steamer with a generator and a hay container made of plastic is offered under the name "HAY STEAMER".

Mycotoxins that are harmful to human and animal health can be stable at high temperatures. For example, deoxynivalenol has a temperature stability up to 140 ° C, which makes it e.g. is not inactivated during vapor deposition.

In general, watering the hay at least alleviates the dust problem, but the scientific work available suggests that the presence of fungal spores and bacteria quickly causes spoilage. Water additives are therefore also available on the market. It is advisable to add at least sufficient salt to the water. However, such hay irrigation solutions lead to a not inconsiderable amount of work and time for daily feeding. In addition, handling with water in winter is a particular problem when temperatures are below zero, whereas in summer microbial spoilage, depending on the temperature, can set in quickly.

In addition to these options for use in the barn, some feed manufacturers also offer dust-free hay for sale. There is usually a kind of Industrial vacuum cleaners used to clean the hay, which is associated with high costs.

Alternatively, the use of oil is known. Although this has certain dust-binding effects when sufficient quantities are used, it is problematic in terms of nutritional physiology because, among other things, the energy input leads to an increase in weight (fat) of the animals and can easily lead to problems with the digestive tract.

It is also known to use appropriate nets into which the hay is placed and which practically do not allow "free feeding". This is intended to undermine the uptake of dust. The same applies to "Heu-Toy" as an "alternative hay net".

No other methods are currently available. In particular, there is also no known method of treating the bedding that does not allow the use of water or other liquids.

All previously available and used methods are only of limited suitability for solving roughage problems. As already explained above, there is currently no practical way for the bedding to efficiently bind the existing dust. When dusting the litter, the pig farming mentioned at the beginning (especially in ecological animal husbandry) must also be considered. The financial scope here is even less than in horse husbandry.

It is therefore the object of the invention to provide a method and a corresponding device for treating a fibrous substance with a dust-binding agent, which at the same time enable effective and inexpensive dedusting.

To solve the problem described above, a method is therefore proposed according to claim 1 which is simple to use and inexpensive and can be operated in a space-saving manner. In addition, an apparatus for performing the method according to the invention is set out in claim 8. Preferred embodiments are the subject of the respective subclaims. Accordingly, a method for treating a fibrous substance, preferably hay or straw, with a dust-binding agent is proposed, which comprises the following steps:

Providing a fibrous material containing dust particles;

- loosening of the fibrous material; and

- Spraying a dust-binding agent, which has a film-forming agent on an aqueous basis, onto the fibrous material, whereby the dust-binding agent is atomized into drops and dust particles are bound to fibers of the fibrous material and / or a cluster formation of the dust particles is promoted.

The fiber-containing material particularly preferably consists essentially of hay or straw or has hay or straw. However, the method can also be used for dedusting other fiber-containing substances, e.g. Vegetable, animal or synthetic fiber-containing substances such as grasses, herbs, leaves, cotton, wool, textile fibers etc. can be used.

After the provision of the fibrous substance, the fibrous substance is loosened. As a result of the loosening, the surface of the fibrous material to be sprayed can be enlarged, in particular if the fibrous material is provided in a compressed form. For example, Treat hay or straw bales of any shape after loosening. Provision can also be made for the fibrous material to be broken up or broken up by the loosening.

After loosening, the fibrous material is sprayed with a dust-binding agent, the dust-binding agent being atomized into drops. The dust binder has an aqueous-based film former. The dust binding agent can bind dust particles to fibers of the fibrous material. Likewise, the dust binding agent promotes cluster formation, both of dust particles and of dust particles and bio-aerosols. This can reduce the amount of dust in the air, for example in the barn. In addition, for example, after the sprayed fibrous material has been sprayed, dust which has already settled on the floor can be whirled up or prevented. With clustering can be an adhesive Connection of two or more dust particles is meant, for example, a sticking together of several dust particles or a sticking of a dust particle to at least one other dust particle, wherein the adhesive effect can be generated by the dust binder. It is not absolutely necessary for every dust particle in the cluster formed to adhere to every other dust particle in the cluster. Clustering can also mean that, for example, a first dust particle is directly bound to a fiber of the fiber-containing substance, and a second dust particle is indirectly bonded to the fiber in an adherent manner.

An enzyme and / or an enzyme mixture for breaking down or decomposing mycotoxins is preferably sprayed on with the dust-binding agent, or the dust-binding agent has such an enzyme when sprayed on. The enzyme and / or the enzyme mixture can be water-soluble. The enzyme mixture can have one or more enzymes. The enzyme mixture can also have other components that are not enzymes. For example, the enzyme mixture can consist or have an enzyme and water. The enzyme can be suitable for human and animal consumption, can be harmless to humans and animals when consumed, and / or can be a feed additive or food additive. In this way, the dust binder not only prevents dust particles from entering the respiratory tract of animals (and humans), but also possible damaging effects in the digestive tract.

The enzyme sprayed on when the dust-binding agent is sprayed on, or the enzyme which has been shown by the dust-binding agent, can be designed to degrade or decompose at least one of A-trichothecenes, B-trichotecenes, fumonisins or cereallenone metabolites. This can damage the liver and the immune system, e.g. can be avoided or reduced by fumonisins.

Before being sprayed on, the dust-binding agent can be heated with a heating element to a temperature equal to or higher than the target temperature, the target temperature preferably being 15 ° C., particularly preferably 20 ° C., the temperature of the dust-binding agent preferably including measured a temperature sensor and the heating element can be controlled based on the temperature measured by the temperature sensor. This ensures, particularly in winter, that the sprayed dust-binding agent has at least the target temperature. A Dust binder temperature of 20 ° C has proven to be advantageous in terms of viscosity and spray properties.

After spraying on the dust-binding agent, the method can preferably have the step of separating the clusters formed by the cluster formation. The step of separating the clusters preferably does not take place immediately after the step of spraying on the dust-binding agent, but only after a time interval of at least a few minutes.

Advantageously, the dust-binding agent can be sprayed on at 5-30 ml / minute / kg of fiber-containing substance, preferably at 10-25 ml / minute / kg of fiber-containing substance during spraying. It is also conceivable that the dust-binding agent can be sprayed on at 60-120 ml / minute, preferably at 80-100 ml / minute. Provision can be made to use 40-60 ml / 10 kg of fibrous material.

The dust-binding agent can furthermore preferably be atomized into drops having a drop size of 20-50 pm, preferably 30-40 pm, particularly preferably 35 pm, during spraying. In particular when spraying the dust-binding agent onto hay or straw, a droplet size of 20-50 pm and especially 35 pm has proven to be advantageous for wetting the fibers.

A water-based film former comprising Cassia-Gum E 427, agar-agar, carboxy-methyl cellulose or any combination thereof can be sprayed on with particular preference when spraying on the dust-binding agent. These film formers are approved as food additives. However, other film formers can also be sprayed on, preferably those with a food additive approval and / or feed additive approval. The dust-binding agent can also have carbohydrate mixtures and / or mixtures of monomers, dimers, oligomers and polymers of glucose on an aqueous basis.

When spraying, a dust binder comprising a preservative, preferably a potassium sorbate, a citric acid, a sugar substance, a maltodextrin or any combination of the like, can preferably be sprayed on as the dust binder. For example, the dust binder can be used as a film-forming agent Cassia-Gum (E 427), agar-agar, caroboxy-methyl cellulose or any combination from this and carbohydrate mixtures and / or modified starches such as maltodextrin and / or mixtures of monomers, dimers, oligomers and polymers of glucose on an aqueous basis with a suitable preservation, for example from potassium sorbate and citric acid.

When spraying, a dust binder having a viscosity of 20-60 mPas, preferably 30-50 mPas, particularly preferably 35-45 mPas, can preferably be sprayed on as the dust binder. This makes the dust binding agent particularly easy to atomize.

Furthermore, a device for carrying out the method according to the invention for treating a fibrous substance, preferably hay or straw, with a dust-binding agent is disclosed, the device having a spray chamber, the spray chamber having an inlet opening, an outlet opening and at least one arranged between the inlet and outlet opening Atomizer for atomizing and spraying a dust-binding agent, the device comprising a feed unit for introducing the fiber-containing substance via the inlet opening into the spray chamber, a loosening unit for loosening and / or crushing the fiber-containing substance and an ejection unit for ejecting the fiber-containing substance through the outlet opening Has spray chamber.

The terms “eject”, “eject” and “eject” do not necessarily mean that the fibrous material is thrown, that is, it follows a (parabolic) trajectory or the like. Rather, it can also mean that the fiber-containing substance is transported or transported from the spray chamber through the outlet opening by the ejection unit. Likewise, the terms “feed”, “feed” or “supplied” can mean that the fibrous substance is transported or conveyed from the feed unit into the spray chamber through the inlet opening.

The loosening unit is preferably arranged in the spray chamber. However, it can also be provided that the loosening unit is arranged at least partially in front of the spray chamber in the feed direction of the fibrous material. The loosening unit is particularly preferably arranged in the feed direction in front of the atomizer. In one embodiment, the feed unit is arranged in front of the spray chamber or extends into the spray chamber. In another embodiment, the feed unit extends through the spray chamber through it. The ejection unit can be arranged in the spray chamber or in the feed direction behind the spray chamber. The ejection unit can also extend through the spray chamber. More than one atomizer can be arranged in the spray chamber. In one embodiment, at least two atomizers are arranged vertically one above the other or horizontally next to one another, so that the fibrous substance can be passed between the atomizers. The atomizers can also be arranged in a grid, a grid and / or regularly spaced apart.

The dust-binding agent can have an enzyme and / or an enzyme mixture for breaking down or decomposing mycotoxins, preferably of at least one of A-trichothecenes, B-trichotecenes, fumonisins or cerealenone metabolites.

The device can have a thermal container fluidly connected to the atomizer for receiving the dust-binding agent, the thermal container at least one heating element for heating the dust-binding agent and at least one temperature sensor for measuring the temperature of the

Has dust binding agent.

The device can have an ejection opening adjustment device which is set up to adjust the shape and / or size of the outlet opening, preferably the width of the outlet opening. The discharge cross-section can thus be connected to the

Insertion opening of a means of transport for removing the sprayed fibrous substance can be adjusted. For example, the outlet opening through the

Ejection opening adjustment device from a rectangular shape to a round shape, e.g. a circular or oval, can be transferred. However, it can also be provided that the shape of the outlet opening is maintained and only the outlet area is varied, for example by reducing a radius or while maintaining an aspect ratio. In one embodiment, the outlet opening can be rectangular or slot-shaped, wherein the width of the rectangle or slot can be adjusted by the ejection width adjustment device. The width adjustment can e.g. done manually or motorized by a slide.

The atomizer can advantageously be a single-substance nozzle, a two-nozzle

Have multi-component nozzle, a rotary atomizer or any combination of these. At least one atomizer preferably has a flat jet nozzle. When using a two-component nozzle, air or steam can preferably be used as the propellant. The rotary atomizer can be designed as a non-pressurized rotating disk and can produce drops with a drop size of 35 µm. The droplets generated by the rotary atomizer have only very little to no scatter in the droplet spectrum, which means that the material is very well covered. Provision can be made to use two rotary atomizers, each of which sprinkles a circle over a full area corresponding to the working width of the device, for example 70 cm, which can result in complete wetting of the fibrous material.

The device can have a separating unit for separating dust particle clusters formed during spraying, preferably at least one suction device, brush, washing unit or a combination thereof. The separation unit can be arranged in the feed direction of the fibrous substance behind the spray chamber and / or the ejection unit and / or between the spray chamber and ejection unit.

The device can preferably have a collecting container for the intermediate storage of the fibrous material treated with the dust-binding agent, which can be connected to the spray chamber via the outlet opening. The collecting container can particularly preferably have a closing flap, via which fiber-containing material treated with the dust-binding agent can be removed. Furthermore, the collecting container can preferably be separated from the device, so that an easy replacement of collecting containers is made possible.

The feed unit can preferably be identical to the ejection unit, the feed unit to the loosening unit and / or the loosening unit to the ejection unit.

The term “identical” here means that the respective units are realized by the same object and / or the same component. If, for example, the feed unit is identical to the ejection unit and the feed unit is provided by a conveyor belt, then the ejection unit corresponds to the same conveyor belt; the conveyor belt then transports, for example, fibrous material into the spray chamber, through the spray chamber and out of the spray chamber. In one embodiment, the feed unit can be identical to the ejection unit. In another In one embodiment, the feed unit can be identical to the loosening unit. In a further embodiment, the loosening unit can be identical to the ejection unit. In yet another embodiment, the feed unit can be identical to both the ejection unit and the loosening unit.

In a preferred embodiment, the feed unit and / or the ejection unit can have a conveyor belt, a roller, a pair of rollers, a blower, a bevel or any combination thereof.

The feed unit can have a pick-up device for round bales made of a material comprising fibrous material, the pick-up device being set up for unwinding the material of the round bale. The receiving device can be set up to transport the unwound material to the loosening unit. If the feed unit has a conveyor belt, a roller, a pair of rollers, a blower or an inclined plane, the receiving device can also be set up for transfer to the conveyor belt, the roller, the pair of rollers, the blower or the inclined plane. The device can thus process both round bales made from square bales made from fibrous material, for example from hay or straw. The device allows the fibrous material to be loosened regardless of its form of preparation (e.g. round bales or cross bales) and sprayed with the dust-binding agent.

The loosening unit can preferably have a roller, a spiked roller, a chopper, an agitator, a blower, a brush or any combination thereof.

Advantageously, the device can have a control unit for controlling and / or regulating the ejection unit, a mass or volume flow of the fibrous material ejected by the ejection unit and / or a mass or volume flow of the dust binder sprayed by the atomizer. For example, by setting a suitable ratio of the mass or volume flows, a wetting time of the fibrous substance with the dust-binding agent can be set. Likewise, the sprayed-on amount of dust-binding agent per kilogram of fibrous substance can be set and / or varied by the control unit. In a preferred embodiment, the inlet opening can lie opposite the outlet opening, the ejection unit being able to accelerate the fiber-containing material introduced into the spray chamber by the feed unit in the direction of the outlet opening and to eject it through the outlet opening.

The invention is to be explained in more detail below on the basis of exemplary embodiments according to the attached figures. It shows:

FIG. 1 shows a schematic flow diagram of the method according to the invention for treating a fiber-containing substance with a dust-binding agent;

2 shows the time course of two PMio measurements for untreated hay and hay treated with a dust-binding agent in accordance with the method according to the invention;

3 shows an embodiment of a device according to the invention for carrying out the method according to the invention; and

Fig. 4 shows another embodiment of a device according to the invention for performing the method according to the invention.

In the following, the treatment of hay with the dust binding agent is mainly described. However, this is not intended to restrict the fibrous material to hay. Obviously, the measurements and devices described below for detecting the dust-binding agent can also be used for other fibrous substances, for example for straw. Obviously, other fluids can also be sprayed on with the device.

FIG. 1 schematically shows an embodiment of the method according to the invention. First of all, the fibrous material is provided. Then the fibrous material is loosened up. The dust binding agent is then sprayed onto the fibrous material. Spraying can preferably be done mechanically, for example with the aid of the device described below. Alternatively, the dust-binding agent can also be applied to the fiber-containing material, which may have been loosened by hand beforehand, using a pump atomizer. The dust binder preferably has an aqueous-based film former. The dust-binding agent sprayed onto the fiber-containing substance can bind dust particles to fibers of the fiber-containing substance. This can prevent or at least make it more difficult for the dust particles bound to the fibers to be whirled up. In addition, the dust binder can combine dust particles with a smaller diameter to form harmless clusters with a larger diameter. The film former preferably has Cassia-Gum E 427, agar-agar, carboxy-methyl cellulose or any combination thereof. The film former made from food additive and / or as feed additive is particularly preferred. This means that the dust can be harmless to humans or animals. The dust-binding agent can be easily contacted, inhaled and / or otherwise introduced by humans and animals. This can result in an uncomplicated and simple handling of the dust-binding agent or that of the device, since safety measures such as respiratory protection, protective glasses, protective gloves, safety shoes, etc. can be dispensed with. The dust binder and / or the film former preferably has a preservative, preferably a potassium sorbate, a citric acid, a sugar, a maltodextrin or any combination thereof. The dust binder can have a carbohydrate mixture and / or mixtures of monomers, dimers, oligomers and polymers of glucose on an aqueous basis. The dust-binding agent can be sprayed on with a volume flow of 60-120 ml / minute, preferably with a volume flow of 80-100 ml / minute. The dust-binding agent can advantageously be sprayed on with an amount of 5 to 30 ml / min / kg of fibrous material, particularly preferably with an amount of 10 to 25 ml / min / kg of fibrous material. Depending on the expected amount of dust, especially that in the fibrous material Even before the amount of dust, air quality, place of use or other external influences is sprayed out, the fibrous material can also be sprayed with more or less dust-binding agents. The dust-binding agent can preferably be atomized into drops having a drop size of 20-50 pm, preferably 20-40 pm, particularly preferably 35 pm, during the spraying. The sprayed-on drop size can, however, also be selected and / or varied depending on the nature, the material and the type of the fiber-containing substance supplied. For hay or straw, for example, a drop size of 20-50 pm, preferably 20-40 pm, has proven to be particularly advantageous. The dust binder can have a viscosity of 20-60 mPas, preferably 30-50 mPas, particularly preferably 35-45 mPas. The dust-binding agent can have an enzyme or an enzyme mixture for the degradation or decomposition of mycotoxins. In particular, the enzyme or the enzyme mixture can degrade or decompose at least one of A-trichothecenes, B-trichotecenes (such as deoxynivalenol), fumonisins or cerealenone metabolites. The enzyme or the enzyme mixture can also be chosen such that other mycotixins can also be decomposed. Damage to humans and animals caused by such toxins, for example damage to the liver and the immune system by fumonisins, can thus be prevented or at least significantly reduced.

It can be provided that the dust-binding agent is heated to a target temperature of at least 15-20 ° C. before being sprayed on. This results in good spray properties of the dust-binding agent. But it can also be provided that the dusting agent e.g. depending on its composition to heat to a different target temperature. Depending on the degree of latitude and / or season, the temperature of the dust-binding agent can, however, drop significantly below the target temperature without heating. It can therefore be provided that the dust-binding agent is kept in a thermal container that is fluidly connected to the atomizer and that it is e.g. to heat the heating element arranged in the thermal container or to bring it to the desired temperature. The heating element can be operated by a control and / or regulator unit, e.g. of the control unit, can be controlled, the control based on that of e.g. temperature of the dust-binding agent measured in the thermal container arranged can take place. Provision can also be made to use measurement data from a further sensor for detecting the outside temperature for controlling the heating element.

After spraying the fibrous substance, the clusters formed can be separated if necessary. The step of separating the clusters preferably does not take place immediately after the step of spraying on the dust-binding agent, but only at a time interval of at least one minute. The time interval can depend on the amount of the dust-binding agent sprayed on, based on the amount of the fibrous substance. The clusters can preferably be deposited with a suction device or a brush or by washing. For this purpose, the device can be suitably equipped and / or have suitable suction devices, brushes or washing units. However, it can also be provided that the clusters are not separated by the device but by another suitable unit. FIG. 2 shows an example of the time course of two PM10 measurements for untreated hay and hay treated with a dust-binding agent according to the method according to the invention and demonstrates the effectiveness of the method according to the invention. A “GRIMM” Model 11R laser aerosol spectrometer was used for the exemplary measurements shown in FIG. 2. The measurements were carried out as follows:

1. Take any sample of a round bale of hay.

2. Preparation of a first and second room of identical size (each 26 m ^{2 of} floor space), laying foil on the floor of the respective room.

3. Measurement of the dust content of the air in the first room (first measurement) over 15 minutes to determine the basic load of the first room.

4. Place the hay sample (see point 1) in the first room. Start of the second measurement by ventilating the hay with a moderate but even air flow. Total measurement time: 20 minutes (first 15 minutes "active", remaining 5 minutes "decay time").

5. During the "active" period, move the hay slightly every 3 minutes. From minute 15, the ventilation is set ("cooldown").

6. Spray the hay sample with the dust binding agent.

7. Measurement of the dust content in the second room (third measurement) to determine the basic load in the second room, analogous to point 3.

8. Transfer the treated hay sample to the second room.

9. Measurement as described under point 4 (fourth measurement). io. Statistical evaluation of the measurements. Consideration of the first and third measurement (basic load in the rooms) for statistical evaluation of the second and fourth measurement.

It can be clearly seen that the PMio value (untreated hay) measured in the second measurement is significantly higher than the value measured in the fourth measurement (treated hay) at any time during the air pollution measurement. At time t = 8, the PMio value of the second measurement is approximately 6 times larger than the value of the fourth measurement. Also noticeable is a significantly lower scatter of the air pollution measurements in the case of the hay treated with the dust binding agent compared to the untreated hay.

An embodiment of an apparatus for performing the method according to the invention is shown in FIG. 3. The device 1 has a feed unit 7, a spray chamber 3, a loosening unit 8 and an ejection unit 9. The hay 2 provided (ie the fiber-containing material provided) is fed from the feed unit 7 to the spray chamber 3 through an inlet opening 4. The loosening unit 8 and an atomizer 6 are arranged in the spray chamber 3. The loosening unit 8 loosens the supplied hay 2. The dust-binding agent is then sprayed onto the loosened hay 2 by the atomizer 6. The ejection unit 9 ejects the hay 2 out of the spray chamber through an outlet opening 5. For example, the ejection unit 9 can eject the sprayed hay 2 into a collecting container 10. The collecting container 10 can have a flap 14. The collecting container 10 can be releasably attached. The ejection unit 9 can be arranged in front of or behind the atomizer 6 in the ejection direction. The atomizer 6 can be connected to a dust-binding agent tank via a feed system, not shown. The device 1 can have a control unit 11. The control unit 11 can control and / or regulate the ejection unit 9. The mass or volume flow of the hay 2 ejected from the spray chamber 3 can thus be controlled and / or regulated by the control unit 11. In another embodiment, the control unit can regulate and / or control the atomizer 6 and / or the supply system of the atomizer 6. The mass or volume flow of the dust binder sprayed on by the atomizer 6 can thus be controlled and / or regulated by the control unit 11. In a further embodiment, the control unit 11 can control the mass or volume flow of both the hay 2 ejected from the spray chamber 3 and the sprayed one Control and / or regulate dust-binding agents. The wetting amount of the hay 2 with the dust-binding agent and / or the wetting time can thus be controlled and / or regulated by the control unit 11. The spray chamber 3 can have a floor sprinkler 15. This means that the hay can also be sprayed with the dust binding agent from below. The spray chamber 3 can have a drain 16 or the like, such as a sieve.

In the preferred embodiment shown in Figure 3, the feed unit 7 is formed by a conveyor belt and the loosening unit 8 by a spiked roller. In addition, for this embodiment, the ejection unit 9 is identical to the feed unit 7, i.e. the ejection unit 9 is formed by the same conveyor belt as the feed unit 7. In this embodiment, as shown in FIG. 3, the atomizer 6 is arranged at the outlet opening 5. The conveyor belt 7, 9 extends in the feed direction into the spray chamber 3, but not beyond the atomizer 6; As shown in FIG. 3, the ejection unit 9 is thus arranged in front of the atomizer 6 in the ejection direction. The conveyor belt can be controlled and / or regulated by the control unit 11. In particular, the feed speed, ie here the running speed of the conveyor belt, can be controlled and / or regulated by the control unit. The control unit 11 is preferably an electric motor. In the embodiment shown in Figure 3, the spiked roller is mechanically connected to the conveyor belt via a gear 13. The transmission ratio of the gear 13 can preferably be chosen such that the tangential speed of the surface of the spiked roller 8 can be greater than the feed speed of the conveyor belt 7, 9. A particularly good loosening of the supplied hay 2 can thus be achieved. However, any other gear ratios of the transmission 13 can obviously also be selected. In the embodiment shown in Figure 3, the number of stages of the gear 13 is selected such that the spiked roller 8 and the rollers of the conveyor belt 7, 9 have the same direction of rotation. As a result, the shear force acting on the supplied hay 2 between the spiked roller 8 and the conveyor belt 7, 9 is increased, so that there is a particularly good loosening. By continuously feeding hay 2 into the spray chamber 3, loosened hay is transported to the atomizer 6 and sprayed hay is ejected through the outlet opening 5.

In another embodiment, the gear 13 is designed such that the spiked roller 8 and the rollers of the conveyor belt 7 have an opposite direction of rotation to have. As a result, the hay 2 fed by the conveyor belt 7 can be loosened by the spiked roller 8 and accelerated in the feed direction. If the inlet opening 4 and the outlet opening 5 are arranged opposite one another (see, for example, FIG. 3), the hay 2 accelerated by the spiked roller 8 can be thrown under the atomizer 6 and through the outlet opening 5; the spiked roller 8 (loosening unit 8) can thus correspond to the ejection unit 9 and the conveyor belt to the feed unit 7. In another embodiment it can also be provided that the loosening unit 8 is not connected or coupled to the feed unit 7 and / or the ejection unit 9. The loosening unit 8 can preferably be driven independently of the feed unit 7 and / or the ejection unit 9. As a result, the direction of rotation and speed of rotation of the spiked roller 8 can be controlled and / or regulated, for example.

Another embodiment of a device for carrying out the method according to the invention is shown in FIG. The device 1 shown has a feed unit 7, a loosening unit 8, a spray chamber 3 and an ejection unit 9. The loosening unit 8 has a spiked roller. It can also be provided that the loosening unit 8 has several e.g. has spiked rollers arranged one behind the other. Just like the embodiment shown in FIG. 3, the embodiment of the device 1 shown in FIG. 4 can also contain continuously fibrous material, e.g. Feed hay or straw to the loosening unit 8 and the spray chamber 3 and eject continuously sprayed fibrous material. The embodiment shown in FIG. 4 can be dimensioned such that a daily ration of hay for a large horse (approx. 8 kg of hay) is completely loosened and sprayed within two minutes.

In the embodiment shown in FIG. 4, the feed unit 7 and the ejection unit 9 have a conveyor belt 9, the conveyor belt of the feed unit 7 being the same as the ejection unit 9. It is also possible to use two conveyor belts which work independently of one another and which can be set differently in terms of the conveying speed. As part of the feed unit 7, the conveyor belt 9 leads to fiber-containing material to be sprayed, in particular hay, through the loosening unit 8 into the spray chamber 3 and transports the sprayed hay as part of the ejection unit 9 to an optional deflection piece 19. In the embodiment shown in FIG. 4, the loosening unit 8 is arranged in front of the spray chamber 3 against the transport direction of the conveyor belt 9. In particular, the inlet opening 4 of the spray chamber 3 can be arranged downstream of the loosening unit 8 in the feed direction, so that the fiber-containing substance is loosened before entering the spray chamber, as shown in FIG. 4, whereas the fiber-containing substance according to FIG. 3 is loosened in the spray chamber. As in the embodiment shown in FIG. 3, the conveyor belt 9 runs essentially in the horizontal plane and / or parallel to the installation surface of the device 1. The spiked roller 8 can be mechanically coupled to the drive of the conveyor belt 9 via a gear 13. However, it can also be provided that spiked roller 8 and conveyor belt 9 can be controlled and moved independently of one another. The feed unit 7 can have a pick-up device for round bales, not shown in FIGS. 3 and 4, by means of which the round bales can be unwound. The device 1 can thus also process or spray fibrous material, in particular hay or straw, in the form of a round bale.

The deflection piece 19 shown in FIG. 4 can be detachably connected to the spray chamber 3. However, as in the device 1 shown in FIG. 4, it can also be provided that the deflection piece 19 is not releasably connected to the spray chamber 3 or is a fixed part of the spray chamber. In this case, the outlet opening of the deflection piece 19 can correspond to the outlet opening 5 of the spray chamber 3 or can be understood as such. In one embodiment, however, the deflection piece 19 can also be part of the ejection unit 9 or the ejection unit 9 can have the deflection piece. The inlet opening 4 of the spray chamber 3 can be oriented essentially perpendicular to the horizontal plane and the outlet opening 5 essentially parallel to the horizontal plane. Depending on the design of the deflection piece 19, the sprayed hay can also be ejected from the device 1 in one or more other directions.

Like the embodiment shown in FIG. 3, the embodiment of the device 1 shown in FIG. 4 also continuously feeds hay via the feed unit 7 to the loosening unit 8 and the spray chamber 3. Thus, hay sprayed with the dust-binding agent is also continuously ejected by the ejection unit 9 or, in the embodiment shown in FIG. 4, transported by the conveyor belt 9 into the deflection piece 19. The sprayed hay then falls in the in Figure 4 Embodiment shown below under the influence of gravity from the deflection piece 19th

As shown in FIG. 4, the device 1 can have an ejection opening adjusting device 18, by means of which the outlet opening 5 of the spray chamber 3 or the deflection piece 19 can be varied. In the embodiment shown in FIG. 4, the discharge opening adjustment device 18 has a manually operable slide arranged on the outside of the device 1, so that when the slide is actuated, the width of the outlet opening 5 of the spray chamber 3 and / or the deflection piece 19 is increased or reduced.

The embodiment of the device 1 shown in FIG. 4 also has a thermal container 17 which is fluidly connected to the atomizer not shown in the figure. The dust-binding agent to be sprayed on can be stored or stored in the thermal container 17. The thermal container 17 can have at least one temperature sensor and at least one heating element. Both the temperature sensor and the heating element can be arranged in the thermal container. The temperature sensor and the heating element can be connected to a control and / or regulator unit, so that the heating element is controlled based on the measured values of the temperature sensor. The dust-binding agent in the thermal container 17 can thus be brought to or maintained at a desired temperature by heating with the heating element. The thermal container 17 can also be assigned a metering pump, not shown, for regulating the amount of dust-binding agent to be sprayed on.

In the embodiment shown in FIG. 4, two rotary atomizers are preferably arranged in the spray chamber 3, which are preferably designed as rotating disks which operate without pressure and which completely wet a circle corresponding to the working width of the device 1. As shown in FIG. 4, the spray chamber 3 can have a flap 20 accessible from outside the device 1. When the flap 20 is open, the at least one atomizer arranged in the spray chamber 3 can be easily accessible for assembly or disassembly or maintenance purposes. The device 1 can have a catch guard 21, which can collect fiber-containing material, for example hay or straw, whirled up by the loosening unit 8 or can prevent it from being flung out of the device 1. In another embodiment, not shown, the conveyor belt can extend in the feed direction through the spray chamber to the outlet opening or beyond.

In another embodiment, not shown, the loosening unit can be arranged in the feed direction in front of the spray chamber.

In an embodiment not shown, the atomizer can have a single-substance nozzle, a two-substance nozzle, a rotary atomizer or any combination thereof. The atomizer can preferably have a flat jet nozzle. The atomizer can be arranged at any position in the spray chamber or on any inside of the spray chamber. The atomizer can preferably be arranged at the outlet opening. Several nozzles or atomizers can be arranged in a pattern, grid or evenly spaced from one another and / or the dust-binding agent can be sprayed on from different directions. It can also be provided that the atomizer is integrated in the loosening unit. For example, a spiked roller used as a loosening unit can have nozzles for spraying on the dust-binding agent.

In another preferred embodiment, not shown, the feed unit and / or ejection unit can alternatively or additionally have a roller, a pair of rollers, a blower, a bevel or any combination thereof. For example, the fiber-containing material can alternatively or additionally be drawn or conveyed into the spray chamber by a roller or a pair of rollers of two rollers arranged one above the other with opposite directions of rotation and / or pulled or conveyed out of the spray chamber by the same or a different pair of rollers or rollers. Alternatively or additionally, the fibrous substance can be blown or sucked into the spray chamber by a blower and / or blown or sucked out of the spray chamber by the same or a different blower. Alternatively or additionally, the fiber-containing substance can be conveyed into the spray chamber via a bevel and / or be conveyed out of the spray chamber through the same or a different bevel. If the device has more than one bevel, one, more or all of the bevels can have different angles of inclination to a horizontal plane. It can also be provided that one or more bevels are curved once or several times. In an embodiment not shown, the loosening unit can have a roller, a chopper, an agitator, a blower, a brush or any combination thereof. It can also be provided that the loosening unit has two rollers spaced apart from one another in the feed direction with different rotational speeds, so that the fibrous material is pulled apart and thereby loosened. It can also be provided that the loosening unit has two pairs of rollers spaced apart in the feed direction, each having two rollers arranged vertically one above the other.

In an embodiment not shown, the outlet opening cannot be arranged parallel to the inlet opening. In particular, the outlet opening can be arranged in such a way that the ejection direction is oriented essentially perpendicular to the feed direction. It can be provided that the fibrous substance is ejected downwards in the vertical direction. It can be provided that the outlet opening has a funnel shape.

In an embodiment that is not shown, the device can have a separation unit for separating dust particle clusters formed during spraying, for example at least one suction device, brush, washing unit or a combination thereof. The separation unit can be arranged in the feed direction of the fibrous substance behind the spray chamber and / or the ejection unit and / or between the spray chamber and ejection unit.

In one embodiment, the device 1 can be fixed in place via a frame 12. In another embodiment, the device 1 or the frame 12 can stand on wheels or rollers, so that the device 1 can be moved.

The features of the invention disclosed in the above description, in the drawings and in the claims can be essential for realizing the invention both individually and in any combination. Reference list

1 device

2 fibrous fabric

3 spray chamber

4 entry opening

5 outlet opening

6 atomizers

7 feed unit

8 loosening unit

9 ejection unit

10 collecting containers

11 control unit

12 frame

13 gears

14 flap

15 floor sprinklers

i6 drain

17 thermal containers

18 discharge opening adjustment device

19 deflection piece

20 flap

21 Catch protection

Claims

Claims: l. A method of treating a fibrous material, preferably hay or straw, with a dust-binding agent, the method comprising the steps of:

Providing a fibrous material containing dust particles;

- loosening of the fibrous material; and

Spraying a dust-binding agent, which has an aqueous-based film former, onto the fiber-containing substance, the dust-binding agent being atomized into drops and dust particles being bound to fibers of the fiber-containing substance and / or clustering of the dust particles being promoted.

2. The method according to claim 1, in which an enzyme with the dust-binding agent

and / or an enzyme mixture for breaking down or decomposing

Mycotoxins is sprayed on or the dust-binding agent has such an enzyme when sprayed on.

3. The method according to any one of claims 1 or 2, wherein the sprayed upon spraying of the dust binder or the enzyme exhibited by the dust binder is designed to degrade or decompose at least one of A-trichothecenes, B-trichotecenes, fumonisins or cerealenone metabolites .

4. The method according to any one of the preceding claims, wherein the

Dust binder is heated with a heating element to a temperature equal to or greater than the target temperature before spraying on when the temperature falls below a target temperature, the target temperature preferably being 15 ° C., particularly preferably 20 ° C., the temperature of the dust binder preferably being measured with a temperature sensor and the heating element is driven based on the temperature measured by the temperature sensor.

5. The method according to any one of the preceding claims, which according to the

Spraying the dust binder has the separation of dust particle clusters.

6. The method according to any one of the preceding claims, in which during the spraying the dust binder is sprayed with a volume flow of 5-30 ml / minute / kg of fibrous material, preferably with a volume flow of 10-25 ml / minute / kg of fibrous material.

7. The method according to any one of the preceding claims, wherein the

Dust binder is atomized during spraying into drops with a droplet size of 20-50 pm, preferably 30-40 pm, particularly preferably 35 pm.

8. The method according to any one of the preceding claims, wherein the

Spraying on the dust-binding agent, an aqueous film-forming agent comprising Cassia-Gum E 427, agar-agar, carboxy-methyl cellulose or any combination of these is sprayed on.

9. The method according to any one of the preceding claims, in which as

Dust binder when sprayed on, a dust binder comprising a preservative, preferably a potassium sorbate, a citric acid, a sugar, a maltodextrin or any combination thereof is sprayed on.

10. The method according to any one of the preceding claims, in which as

Dust binder is sprayed on when spraying a dust binder having a viscosity of 20-60 mPas, preferably 30-50 mPas, particularly preferably 35-45 mPas.

11. The device (1) for performing the method according to one of the

preceding claims, wherein the device comprises: a spray chamber (3) having an inlet opening (4), a

Outlet opening (5) and at least one between the inlet and Has outlet opening (4; 5) arranged atomizer (6) for atomizing and spraying a dust-binding agent; a feed unit (7) for introducing the fibrous substance (2) through the inlet opening (4) into the spray chamber (3); a loosening unit (8) for loosening and / or crushing the fibrous material (2); and an ejection unit (9) for ejecting the fibrous material (2) through the outlet opening (5) from the spray chamber.

12. The device (1) according to claim 11, wherein the dust-binding agent is an enzyme

and / or an enzyme mixture for breaking down or decomposing

Mycotoxins, preferably of at least one of A-trichothecenes, B-trichotecenes, fumonisins or cerealenone metabolites.

13. The device (1) according to claim 11 or 12, which is a fluid with the

Atomizer (6) connected thermal container (17) for receiving the

Has dust-binding agent, the thermal container (17) having at least one heating element for heating the dust-binding agent and at least one temperature sensor for measuring the temperature of the dust-binding agent.

14. The device (1) according to any one of claims 11 to 13, the one

Ejection opening adjustment device (18), which for adjusting the shape and / or size of the outlet opening (5), preferably the width of the

Outlet opening (5) is set up.

15. The device (1) according to any one of claims 11 to 14, wherein the atomizer (6) has a single-substance nozzle, a two-substance nozzle, a rotary atomizer or any combination thereof.

16. The device (1) one of claims 11 to 15, in which the device comprises a separating unit for separating formed during spraying Has dust particle clusters, preferably at least one vacuum cleaner, brush, washing unit or a combination thereof.

17. The device (1) according to any one of claims 11 to 16, wherein the device (1) has a collecting container (10) for the intermediate storage of the

Has dust-binding agent treated fibrous material (2) which is connected to the spray chamber (3) via the outlet opening (5).

18. The device (1) according to any one of claims 11 to 17, wherein the feed unit (7) and the ejection unit (9), the feed unit (7) and the

Loosening unit (8) and / or the loosening unit (8) and the ejection unit (9) are designed as identical assemblies of the device.

19. The device (1) according to one of claims 11 to 18, wherein the feed unit (7) and / or the ejection unit (9) a conveyor belt, a roller

Roll pair, a blower, an inclined plane or any combination of these.

20. The device (1) according to any one of claims 11 to 19, wherein the feed unit (7) has a pick-up device for round bales made of a material comprising fibrous material (2), the pick-up device being set up for unwinding the material of the round bale, preferably the

Receiving device for transporting the unwound material to the loosening unit (8) or with reference to claim 19 for transfer to the conveyor belt, the roller, the pair of rollers, the blower or the inclined plane.

21. The device (1) according to any one of claims 11 to 20, wherein the

Loosening unit (8) has a roller, a spiked roller, a chopper, an agitator, a blower, a brush or any combination thereof.

22. The device (1) according to any one of claims 11 to 21, wherein the device comprises a control unit (11) for controlling and / or regulating the ejection unit (9), a mass or volume flow ejected by the ejection unit (9) of the fibrous substance (2) and / or one through the atomizer (6)

sprayed mass or volume flow of the dust binder.

23. The device (1) according to any one of claims 11 to 22, wherein the inlet opening (4) is opposite the outlet opening (5), the ejection unit (9) being set up to move the feed unit (7) into the spray chamber (3). accelerate introduced fiber-containing material (2) in the direction of the outlet opening (5) and eject it through the outlet opening (5).