RU147679U1 - INSTALLATION FOR THE PRODUCTION OF FINE-DISPERSED AND FRACTIONAL MATERIALS - Google Patents

Abstract

1. Installation for the production of finely dispersed and fractionated materials, including a sequentially installed hopper, feeder, hammer mill, equipped with a separator and devices for withdrawing fine and extra-dimensional material beyond its limits, the output of the hopper is connected to the input of the feeder, the output of which is connected to the input of the hammer mill among themselves by belt conveyors, a heat supply source, the output of which is connected by a pipeline to a hammer mill, a dust collection system and gas cleaning from dust and, a blower device associated with silos of the finished product, characterized in that it is equipped with a material flow divider installed behind the device for outputting fine and oversized material from the hammer mill, one outlet of which is connected to the hammer mill, and the other outlet is a device for sieving the extra material through a screw conveyor. 2. Installation according to claim 1, characterized in that the material flow divider is made in the form of a duct with one input and two outputs, equipped with an electric gate. 3. The installation according to claim 1, characterized in that it is equipped with transport devices for feeding fractionated materials to warehouses or silos, and oversized material to a hammer mill.

Description

The utility model relates to equipment for the production of finely dispersed and fractionated materials and can be used in the construction materials industry, energy, chemical and other industries of the mining industry.

A known production line for the production of activated mineral powder (option 1) used for the preparation of asphalt mixes, containing a receiving hopper of a power unit equipped with a dispenser, conveyors, a dryer, a mixer, containers for storing mixed components, equipped with dispensers, a storage hopper, and the dryer and mixer are made in the form of a single drum-type drying and mixing unit, connected to a dispenser of mineral powder and to a dispenser of an activating mixture, a hopper provided with at least two dispensers associated with ball mills, mounted in parallel, with the outputs of said mills connected with a warehouse of finished products (patent PM №49835, IPC E01C 19/10, publ. 10.12.2005)

Installation works as follows:

- limestone screening of crusher unit screens with a particle size of less than 10 mm from the hopper of the plate feeder through a mineral powder batcher is fed to a conveyor belt and transported to a drum-type drying and mixing unit;

- after drying with simultaneous heating, the source material is divided into fractions on a screen: crushed stone 5-10 mm, screening 0-5 mm;

- in bitumen-boiler-boilers and tanks for surfactants equipped with a heating system, pumping units and a dosing system, bitumen and surfactants are heated with subsequent supply to the mixing working boiler, from where the finished activating mixture through the dispenser of the activating mixture enters the drum-type drying and mixing unit ;

- in the unit there is a preliminary mixing of the activating mixture with the dried source material - crushed stone fraction 5-10 mm;

- mineral material that has undergone preliminary mixing with the activating mixture from the storage hopper through dispensers enters two ball mills, where during the grinding of the mineral material the “fresh” surfaces of continuously formed powder grains interact with the activating mixture. As a result, the properties of these surfaces radically change, and the mineral powder acquires the properties of an activated mineral powder; the finished product is fed through a pneumatic pipe to the finished product warehouse.

The disadvantage is that this installation is intended for the production of activated mineral powder and cannot be used for the production of finely divided and fractionated materials.

The closest is the installation for the production of finely dispersed materials, created on the basis of a tangential hammer mill equipped with a separator, which allows the selected finely dispersed product in the form of a dust-gas mixture to be sent to dust collection and then to the finished product silo, and to collect the finely dispersed material (grain) of the separator in one place and put it out outside the mill. This installation (Scientific-technical and industrial journal "Building Materials", No. 5, May 2008, article "Technology and equipment for the efficient processing of sedimentary rocks" authored by V. A. Dubov, N. V. Solodkov, p. 26 -27, see Fig. 3), provides for the processing of screenings for crushing limestone or dolomite in a hammer mill MMT 2000/2590/750. The starting material of fraction 0-5 (20) mm from the industrial warehouse is conveyed by a belt conveyor to the mill loading device.

Under the loading device of the mill hot gases are supplied from the heat generator. Under the action of the rotating hammers of the mill and the supplied hot gases, the material is crushed and dried. The mill is unloaded through a separator, which separates fine particles sent in the form of a dust-gas mixture to cyclones and then to a bag filter, and the coarse fraction is removed using a heat with a flasher and belt conveyors. At the same time, the coarse-dispersed fraction can serve as a finished product or returned to the mill to a domol.

The disadvantage of this installation is the inability to obtain different fineness grinding of finished products.

Common features with the claimed technical solution is the presence of a sequentially installed hopper, feeder, hammer mill, equipped with a separator and devices for outputting finely dispersed and extra-dimensional material beyond its borders, while the output of the hopper is connected to the input of the feeder, the output of which is connected to the input of the hammer mill, connected between by belt conveyors, the presence of a heat supply source, the output of which is connected by a pipeline to a hammer mill, a dust collection system and gas cleaning from dust , Draft device.

The reasons hindering the obtaining of a technical result is the lack of a flow divider, which allows directing excess material to a mill in a mill or for further processing.

The task to which the utility model is directed is to improve the operational characteristics of the installation.

The technical result consists in expanding the range of materials produced by equipping the unit with a flow divider, which allows for the transfer of oversize material to the mill into the mill or for further processing.

For the processing of oversize material, the installation is equipped with a device for sieving it into narrow fractions, for example, steeply inclined screens or vibrating screens, and transport devices, for example, screw conveyors, directing narrow fractions of the finished product into silos, and the oversized material of the device for sieving to grinding in a mill. Thus, the installation provides the production of finely divided and fractionated materials of several kinds.

The technical result is achieved by the fact that the installation for the production of finely dispersed and fractionated materials including a sequentially installed hopper, feeder, hammer mill, equipped with a separator and devices for outputting finely dispersed and extra-dimensional material beyond its limits, the output of the hopper is connected to the input of the feeder, the output of which is connected to the input of the hammer mills interconnected by belt conveyors, the heat supply source of which is connected by a pipeline to a hammer mill, system dust extraction and gas cleaning dust collector associated with silos of the finished product is additionally equipped with a material flow divider installed behind the device for outputting fine and oversized material from the hammer mill, one outlet of which is connected to the hammer mill, and the other outlet is a device for sieving super-dimensional material through the conveyor.

The material flow divider is made in the form of a duct with one input and two outputs, equipped with an electric gate.

The unit is equipped with transport devices for feeding fractionated materials to warehouses or silos, and oversized material to a hammer mill.

In FIG. 1 General view of the installation for the production of fine and fractionated materials.

In FIG. 2 general view of the flow divider.

The installation includes the following equipment: a feed hopper (1), a feeder (2), a conveyor belt (3), a sealing device (4), a hammer mill (5) equipped with a separator, for example, a dynamic type (6), with a device for withdrawal of a thin product (dust-gas mixture) (7) and an oversized product (8), cyclones of the first cleaning stage (9), second cleaning stage (10), exhaust fan (intermediate) (11), bag filter (12), exhaust fan (end) (13), exhaust pipe (14), flow divider (15), heat supply source (heat generator) (16), system for inter operational transport: screw conveyors (17), (18), (19), (20), (21), (22), (23), elevators (24), (25), (26), (27), a device for sieving super-dimensional material (screen) (28), finished product silos (29), (30), (31), (32). The flow divider comprises a housing (33), a valve (34), a switching actuator (35), a limit switch (36). Installation works as follows.

The source material from the hopper (1) is fed by a feeder (2) to the conveyor belt (3) and then, through a sealing device (4), the material enters the hammer mill (5) into the loading neck, into which hot gases are supplied from the heat generator (16).

The dried and crushed material enters the separator (6), from which the finely dispersed product in the form of a dust-gas mixture through the device for outputting the fine product (7) is discharged outside the separator and the mill, and the super-dimensional material (grains), through the device (8) and the sealing device , - to the lower part also beyond the separator and the mill.

Finely dispersed material, for example, mineral powder trapped in the dust collection system in cyclones (9), (10) and bag filter (12), is sent to the silo using a system of interoperational transport - screw conveyors (17), (18) and an elevator (24) 29) finished product.

Oversize material exiting the separator (6) through the device (8) enters the flow divider (15), which directs the flow in various ratios either to the grinding mill, or using a screw conveyor (19) to a screening device, such as a screen or a vibrating screen (28) in order to separate the super-dimensional material into narrow fractions of the finished product, for example 0.2-0.5 mm; 0.5-1.0 mm; 1-3 mm and +3 mm.

The flow divider works as follows.

Oversize material (grains) enters the space of the loading part of the casing (33) of the divider, in the area of which the valve (34) is located (mounted). The valve is driven by an electric actuator (35) equipped with a limit switch (36). The adjustment of the circuit breaker is based on the amount of material returned to the mill to the mill and sent to sieving and is carried out practically, depending on the purpose and task during operation of the installation.

Material having a fraction size higher than the required size, for example, more than 3 mm, from the screening device in the form of a screen (28) along the estrus and then conveyor (20) is sent to the conveyor belt (3) and, together with the source material, is fed to the grinding mill ( 5).

The fractionated material (finished product) of the fraction 1-3 mm conveyor (21) then the elevator (25) is sent to the silo (32); fractions of 0.5-1.0 mm by conveyor (22), elevator (21) is fed into the silo (31), and fractions of 0.2 ÷ 0.5 mm by conveyor (23), then by elevator (27) to the silo (30) )

Claims (3)

1. Installation for the production of finely dispersed and fractionated materials, including a sequentially installed hopper, feeder, hammer mill, equipped with a separator and devices for withdrawing fine and extra-dimensional material beyond its limits, the output of the hopper is connected to the input of the feeder, the output of which is connected to the input of the hammer mill among themselves by belt conveyors, a heat supply source, the output of which is connected by a pipeline to a hammer mill, a dust collection system and gas cleaning from dust and, a blower device associated with silos of the finished product, characterized in that it is equipped with a material flow divider installed behind the device for outputting fine and oversized material from the hammer mill, one outlet of which is connected to the hammer mill, and the other outlet is a device for sieving the extra material through a screw conveyor. 2. Installation according to claim 1, characterized in that the material flow divider is made in the form of a duct with one input and two outputs, equipped with a power gate. 3. The installation according to claim 1, characterized in that it is equipped with transport devices for feeding fractionated materials to warehouses or silos, and oversized material to a hammer mill.

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