CN211921341U

CN211921341U - Equipment for coprocessing electrolytic manganese slag based on dry-process rotary kiln cement production line

Info

Publication number: CN211921341U
Application number: CN201922397121.5U
Authority: CN
Inventors: 尹小林
Original assignee: Hunan Xywj Environmental Energy Technology Development Co ltd
Current assignee: Hunan Xywj Environmental Energy Technology Development Co ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-11-13
Anticipated expiration: 2029-12-27

Abstract

The device mainly comprises a rotary kiln, a kiln tail smoke chamber and a decomposing furnace, and is further provided with a manganese slag metering and conveying device, an air-locking feeder, and a manganese slag metering and conveying device, wherein the end of the manganese slag discharging end of the manganese slag metering and conveying device is communicated with a feed inlet of the air-locking feeder, a discharge outlet of the air-locking feeder is communicated with the kiln tail smoke chamber, and the kiln tail smoke chamber is respectively communicated with a rotary chamber and the decomposing furnace. The utility model discloses equipment structure is simple, and process flow is brief, easily automated control, and the investment is less, and the handling capacity is big, safety ring protects.

Description

Equipment for coprocessing electrolytic manganese slag based on dry-process rotary kiln cement production line

Technical Field

The utility model relates to a treatment facility of electrolytic manganese sediment, concretely relates to equipment based on dry process rotary kiln production line coprocessing electrolytic manganese sediment.

Background

The electrolytic manganese slag is neutral or weakly acidic waste slag generated by solid-liquid separation (filter pressing) in the process of preparing manganese electrolyte by acid leaching (combination) of manganese ore. At present, the electrolytic manganese production capacity in China is over 200 million tons, the acid leaching waste residue amount discharged by each 1 ton of electrolytic manganese production is 5-7 tons, the residue amount of the lower grade raw materials produced by each ton of electrolytic manganese can reach 10 tons, the actual annual stacking or burying amount reaches hundreds of millions of tons, and the new annual increment reaches thousands of tons. The components and the properties of the electrolytic manganese slag have certain differences due to the differences of ore raw material components, acid leaching processes and the like. Most of manganese slag is black, and the minority of manganese slag is brown gray, and the manganese slag is in a cake shape after being filter-pressed, and gradually becomes powder after being put into storage, and absorbs water to turn into paste when raining. Due to the limitation of the filter pressing process and the water holding capacity of the manganese slag, the water content of the dehydrated fresh manganese slag is about 27-30%, and the solution mainly comprises MnSO with the concentration of about 35g/L₄、100g/L (NH₄)₂SO₄、25g/L MgSO₄And the like. The acid leaching waste residue has fine particles, the particle size distribution of the particles is generally less than 15 mu m and accounts for 31-36%, 15-30 mu m and accounts for 45-50%, 30-45 mu m and accounts for 4-6%, 45-60 mu m and accounts for 1.5-3%, 60-80 mu m and accounts for 3.5-6%, 80-100 mu m and less than 1%, and more than 100 mu m and accounts for 4-8%, and the particle size of solid particles in the residue is mainly concentrated in 3-30 mu m and accounts for more than 70%. The average particle size of the powder is smaller than that of raw cement powder, the water retention is good, the water content is high, the drying and dehydration are difficult, and volatile gases such as ammonia and the like are discharged in the drying process. The chemical components of the dried electrolytic manganese slag mainly comprise 9-14% of loss on ignition and SiO₂ 22～35%、Al₂O₃ 6～12%、Fe₂O₃ 5～12%、CaO 6～18%、MgO 1～4%、MnO₂～5%、SO₃ 20～37%、K₂O 0.8～2%、Na₂0.2-1% of O and a small amount of lead, zinc, cadmium, cobalt and the like; the main mineral components are sulfate (mainly dihydrate gypsum) and SiO₂(Quartz), 2 CaO. SiO₂·2H₂O（C₂SH₂) And Fe₂O₃Etc. in which SO₃20 to 37 percent, and the percentage is more than 45 percent of gypsum (if the CaO content is high), namely the electrolytic manganese slag is of lower grade substantiallyChemical gypsum or sulfate waste residues.

Because the electrolytic manganese slag particles are fine and contain a large amount of sulfate radicals, ammonia nitrogen and a certain amount of heavy metal harmful elements, the electrolytic manganese slag particles are discharged and accumulated, surface water, underground water and soil are seriously polluted, and the ecological environment is seriously influenced. Therefore, a great deal of research and practice is carried out on the disposal and utilization of the manganese slag at home and abroad. The comprehensive utilization of manganese slag in foreign countries mainly focuses on the production of cement by using manganese slag as a ingredient and the partial replacement of manganese slag as retarder gypsum in cement production. Since the 90 s in China, dozens of college and university research institutes and almost all electrolytic manganese enterprises develop series of research and practice on manganese slag utilization, and the existing research results can be summarized into the following six categories:

(1) for cement production or as admixtures

For example, CN1837120A discloses a method for producing cement by using electrolytic manganese slag, which comprises the steps of mixing 63-63.5% of limestone, 19-19.5% of electrolytic manganese slag, 1.5-2% of iron powder, 1.3-1.8% of fluorite and 13.2-13.7% of anthracite, grinding into raw materials, pelletizing and roasting into clinker, wherein the raw materials are normal common silicate clinker production ingredients, and the method has the advantages of low consumption of electrolytic manganese slag, high coal consumption, high cost, low cement quality and poor stability.

CN101948254A discloses a preparation method of electrolytic manganese slag ecological cement, which is characterized in that 10-50% of electrolytic manganese slag calcined at 500-900 ℃, 10-50% of ironmaking blast furnace slag, 10-50% of clinker, 0-20% of fly ash or steel slag, 3-7% of gypsum and additives (potassium carbonate, sodium chloride, calcium chloride, sodium sulfate and the like) are ground to a specific surface area of 360-580 m2/kg to prepare the electrolytic manganese slag ecological cement.

CN102167533A discloses a manganese slag composite activated and modified slag cement admixture and a preparation method thereof, which is prepared by drying and ultrafine grinding the admixture to a specific surface area of more than 13m²Per g (much higher than the fineness of cement by 3-5 m)²Per gram), 78 to 82 percent of modified electrolytic manganese slag and hydrated lime (Ca (OH) which are roasted and activated at the temperature of 350 to 450 DEG C₂) 0-18 percent of the slag water and 0-22 percent of the clinker powder are mixed evenly to prepare the slag waterThe essence of the mud admixture is that sulfate waste residue after superfine grinding is roasted and activated at low temperature to form soluble anhydrous calcium sulfate, and then alkali (Ca (OH) is added₂) The sulfur-alkali composite excitant prepared by compounding the components has high cost, has no obvious technical effect advantage compared with cheap dihydrate gypsum or anhydrite and lime as the sulfur-alkali excitant, and has poor economical efficiency. In addition to the above-mentioned problems, the existing methods for producing electrolytic manganese slag directly used as raw material for producing cement or as admixture have extremely poor practical effects (all have the exemplary application lines of production stoppage or half production stoppage), which result in high energy consumption and serious secondary pollution.

(2) As retarder, sulfate excitant

Namely, the treated electrolytic manganese slag is used as a retarder instead of gypsum, such as the comprehensive utilization result of the electrolytic manganese slag developed by the cooperation of the Hunan province building material research and design institute and the Central and south schools, and the essence is that sulfate minerals in the electrolytic manganese slag are activated to be used as an activating agent for cement production and a retarder for replacing gypsum.

Litanping and the like (see 'research on physicochemical characteristics and development and application of electrolytic manganese slag', China manganese industry, Vol.24, No. 2, 2006, 5 months) can be used for carrying out heat treatment on the electrolytic manganese slag at 750 ℃, so that a sulfate excitant for fly ash and blast furnace slag can be developed, a concrete composite admixture can also be produced by being matched with the fly ash or the blast furnace slag, or gypsum is replaced by the cement retarder, and compared with the method for using natural anhydrite or industrial fluorgypsum, the method has the advantages of no remarkable technical effect, high cost and no economy.

CN103553378A discloses a method for preparing cement by using electrolytic manganese slag as a retarder, which is to mix, stir and modify the electrolytic manganese slag, an alkaline modifier (quicklime CaO) and water according to the proportion of 8:1:1 to prepare the cement retarder, wherein the consumption of the cement is 4-10% of the output of clinker. The alternative retarder is cheaper dihydrate gypsum or modified cheap phosphogypsum, has no remarkable technical effect and no economy. The method not only influences the performance of the cement, but also causes secondary pollution in the processing process.

(3) Used for producing building materials such as bricks, building blocks, ceramsite and aggregate

The electrolytic manganese slag is used for producing building materials, including a cement bond curing method and a sintering method. The cement cementation and solidification method takes electrolytic manganese slag or washing manganese slag as a main raw material, takes cement as a cementing material for molding and solidification, has extremely poor product volume stability in the later period except for pollution diffusion, and stops tens of conventional production lines. The sintering method is formed and sintered by mixing manganese slag with clay/shale and the like, and has the disadvantages of large secondary pollution and poor product volume stability when the mixing amount is high.

(4) Used as roadbed material

The manganese slag instead of partial soil and stone is used to build highway subgrade, subbase, base course and road surface, which is essentially only a pollutant transfer method.

(5) Manganese fertilizer or manganese-silicon fertilizer made of manganese slag

For example, Wangbianan and DengJianqi of Hunan West environmental protection agency in Hunan province, etc. research and develop a method for preparing a composite fertilizer from manganese slag, and for example, CN102674965A discloses a manganese slag composite fertilizer and a preparation method thereof.

(6) Comprehensive utilization method of manganese slag

The comprehensive utilization of the manganese slag focuses on extracting certain valuable elements or compounds in the manganese slag.

For example, the method for comprehensively utilizing manganese slag disclosed in CN104017998A and the method for comprehensively utilizing manganese slag to produce chemical raw materials disclosed in CN104016357A are that the manganese slag is crushed and then mixed with an aqueous solution of fluosilicic acid or an ammonium fluoride solution for heating reaction, and white carbon black, manganese sulfate, sulfate and aluminum hydroxide are obtained through multi-stage separation and extraction. Such as washing and recovering manganese sulfate, adding cement into solid slag after washing and solidifying to prepare ceramics, bone particles and the like, which are developed by great noble industries. However, the above-mentioned technical solutions have problems such as poor economy, low consumption, or significant secondary pollution, and the like, and thus the problem of recycling electrolytic manganese slag cannot be objectively solved.

The above-mentioned various existing technical approaches or technical methods related to the treatment and comprehensive utilization of electrolytic manganese slag objectively obtain certain research results or application results, and the treatment of manganese slag has also been listed in the national '863 plan' and accepted as result, but until now, the actual comprehensive utilization effect of a large amount of electrolytic manganese slag is not fully satisfactory, and a large amount of electrolytic manganese slag is simply piled up or abandoned in a culvert and a ditch, or is subjected to landfill treatment after drying (serious gas pollution is generated in the drying process), which causes great influence and long-term hidden danger to the ecological environment of underground water, soil and surface water, and a brand new technical method and equipment are urgently needed to solve the problem of resource utilization of large amount and wide range of manganese slag.

On the other hand, at present, the dry-process rotary kiln cement has huge capacity and wide coverage, and ammonia water is widely used for denitration. How to utilize a dry-method cement production plant to produce portland cement and simultaneously cooperatively treat electrolytic manganese slag is an important research subject.

Disclosure of Invention

The utility model aims to solve the technical problem of overcoming the defects existing in the prior art and providing the device for the cooperative treatment of the electrolytic manganese slag based on the dry-method rotary kiln cement production line, which has simple structure and low investment.

The utility model provides a technical scheme that its technical problem adopted as follows: the device comprises a rotary kiln, a kiln tail smoke chamber and a decomposing furnace, and is further provided with a manganese slag metering and conveying device and an air-locking feeder, wherein the end of the manganese slag metering and conveying device is communicated with the feed inlet of the air-locking feeder, the discharge outlet of the air-locking feeder is communicated with the kiln tail smoke chamber, and the kiln tail smoke chamber is respectively communicated with a rotary chamber and the decomposing furnace.

Further, the manganese slag metering and conveying device comprises a constant feeder, an inclined screw conveyor and a horizontal screw conveyor, wherein a discharge port of the constant feeder is communicated with a feed port of the inclined screw conveyor, and a discharge port of the inclined screw conveyor is communicated with a feed port of the horizontal screw conveyor.

Further, the manganese slag metering and conveying device comprises a constant feeder and a belt conveyor, wherein a discharge hole of the constant feeder is communicated with a feed hole of the belt conveyor.

Further, a cyclone preheater is arranged between the air-locking feeder and the decomposing furnace, the lower end of a discharging pipe of the cyclone preheater (after the discharging pipe is provided with a flap valve) is communicated with a discharging port of the air-locking feeder, the discharging port of the discharging pipe of the cyclone preheater is communicated with a feeding port of a kiln tail smoke chamber, and an air outlet of the decomposing furnace is communicated with an air inlet of the cyclone preheater through a pipeline.

Further, a C5A-grade cyclone preheater and a C5B-grade cyclone preheater are arranged between the air-locking feeder and the decomposing furnace, a first discharge port of the air-locking feeder is communicated with the lower end of a discharge pipe (after the discharge pipe is provided with a flap valve) of the C5A-grade cyclone preheater, a second discharge port of the air-locking feeder is communicated with the lower end of the discharge pipe (after the discharge pipe is provided with the flap valve) of the C5B-grade cyclone preheater, a discharge port of the discharge pipe of the C5A-grade cyclone preheater is communicated with a first feed port of a kiln tail smoke chamber, a discharge port of the discharge pipe of the C5B-grade cyclone preheater is communicated with a second feed port of the kiln tail smoke chamber, and a first air outlet and a second air outlet of the decomposing furnace are respectively communicated with air inlets of the C5A-grade cyclone preheater and the C5B-grade cyclone preheater through pipelines.

Further, the cyclone preheater is a C5 grade cyclone preheater.

The utility model discloses theory of operation and beneficial effect: (1) according to the characteristics of a clinker production kiln system of a dry-process rotary kiln cement production line and the characteristics of electrolytic manganese slag, the equipment for cooperatively treating manganese slag is developed, the electrolytic manganese slag which is not dried is directly fed into a smoke chamber at the tail of a high-temperature kiln through an air-locking feeder, so that the smoke chamber can be cooled to reduce the temperature of the smoke chamber by utilizing the moisture contained in the low-temperature manganese slag, and the moisture is quickly converted into high-temperature steam to enter a decomposing furnace to promote the gasification combustion of carbon granules in the decomposing furnace; secondly, ammonium (NH) in the electrolytic manganese slag is utilized⁴⁺) The ammonia gas is heated and decomposed into ammonia gas which is volatilized into a decomposing furnace, so that the using amount of the denitrified ammonia water can be reduced; (2) the device for co-processing the electrolytic manganese slag developed aiming at the inclusion in the clinker production and calcination process of the kiln system of the dry-process cement production line can effectively utilize various mineral components in the electrolytic manganese slag and save part of silicon, aluminum, iron and calciumCalcium sulfate and other raw materials, heavy metals can be completely solidified, the aim of comprehensively utilizing resources is achieved, and the quality of clinker and the performance of cement are basically not influenced; (3) the manufacturing is simple, the investment of technical improvement is less, the handling capacity of the manganese slag is larger (the capacity scale of a dry cement production line is large, 1 ton of clinker needs about 1.58 tons of raw material powder), no secondary pollution is caused, the original electrolytic manganese slag and the piled or abandoned electrolytic manganese slag can be fully utilized, and the social ecological environment and the natural environment are protected.

Drawings

FIG. 1 is a schematic structural view of an equipment system in embodiment 1 of the present invention;

fig. 2 is a schematic structural view of an equipment system in embodiment 2 of the present invention;

fig. 3 is a schematic structural view of an equipment system in embodiment 3 of the present invention;

in the figure, 1-manganese slag metering and conveying device, 1 a-quantitative feeder, 1 b-inclined screw conveyor, 1C-horizontal screw conveyor, 1 d-horizontal screw conveyor, 1 e-belt conveyor, 1 f-bucket elevator, 2-air locking feeder, 3-kiln tail smoke chamber, 4-rotary kiln, 5-decomposing furnace, 6-C5 level cyclone preheater, 6a-C5A level cyclone preheater and 6b-C5B level cyclone preheater.

Detailed Description

The invention is further illustrated by the following examples and figures.

The chemical reagents used in the embodiments of the present invention, if not specifically described, are commercially available in a conventional manner.

Example 1

Referring to fig. 1, the device for co-processing electrolytic manganese slag based on the dry-process rotary kiln cement production line mainly comprises a constant feeder 1a, an inclined screw conveyor 1b, a horizontal screw conveyor 1c, an air-locking feeder 2, a kiln tail smoke chamber 3, a rotary kiln 4 and a decomposing furnace 5. The discharge port of the quantitative feeder 1a is communicated with the feed port of the inclined screw conveyor 1b, the discharge port of the inclined screw conveyor 1b is communicated with the feed port of the horizontal screw conveyor 1c, the discharge port of the horizontal screw conveyor 1c is communicated with the feed port of the air-locking feeder 2, the discharge port of the air-locking feeder 2 is communicated with the feed port of the kiln tail smoke chamber 3, the smoke outlet of the kiln tail smoke chamber 3 is communicated with the air inlet of the decomposing furnace 5 through a pipeline, and the material outlet of the kiln tail smoke chamber 3 is communicated with the feed port of the rotary kiln 4.

The working process of the embodiment is as follows: the electrolytic manganese slag is measured and weighed by the quantitative feeder 1a and then is continuously conveyed to the air locking feeder 2, then is fed into the kiln tail smoke chamber 3 by the air locking feeder 2, the water, ammonia and the like in the electrolytic manganese slag fed into the high-temperature kiln tail smoke chamber 3 are heated and quickly gasified and rise into the decomposing furnace 5, the water is quickly converted into high-temperature steam to enter the decomposing furnace, the gasification and combustion of carbon granules in the decomposing furnace are promoted, and decomposed NH is generated₃NO produced by combustion of fuel in decomposing furnace 5_XReaction to form N₂The ammonia water consumption for denitration is further reduced, the solid in the electrolytic manganese slag enters the rotary kiln 4 along with the high-temperature raw meal, the electrolytic manganese slag entering the rotary kiln 4 is converted into clinker through high-temperature calcination treatment or is wrapped in the clinker, and harmless treatment of the electrolytic manganese slag is thoroughly realized.

Example 2

Referring to fig. 2, the device for cooperatively processing the electrolytic manganese slag on the basis of the dry-method rotary kiln cement production line mainly comprises a constant feeder 1a, a belt conveyor 1e, an air-locking feeder 2, a kiln tail smoke chamber 3, a rotary kiln 4, a decomposing furnace 5 and a C5-level cyclone preheater 6. The discharge port of the quantitative feeder 1a is communicated with the feed port of the belt conveyor 1e, the discharge port of the belt conveyor 1e is communicated with the feed port of the air-lock feeder 2, the discharge port of the air-lock feeder 2 is communicated with the lower end (behind a discharge pipe with a flap valve) of a discharge pipe of the C5-level cyclone preheater 6, the discharge port of the discharge pipe of the C5-level cyclone preheater 6 is communicated with the feed port of the kiln tail smoke chamber 3, the air outlet of the kiln tail smoke chamber 3 is communicated with the air inlet of the decomposing furnace 5 through a pipeline, the discharge port of the kiln tail smoke chamber 3 is communicated with the feed port of the rotary kiln 4, and the air outlet of the decomposing furnace 5 is communicated with the air inlet of the C5-level cyclone preheater 6 through a pipeline.

The working process of the embodiment is as follows: the wet electrolytic manganese slag is measured and weighed by the constant feeder 1aContinuously conveying the manganese slag to a belt conveyor 1e, continuously conveying the manganese slag to an air locking feeder 2 through the belt conveyor 1e, then feeding the manganese slag into a blanking pipe of a C5-level cyclone preheater 6 through the air locking feeder 2, quickly drying and neutralizing acidic electrolytic manganese slag by taking strongly basic high-temperature raw material powder mainly containing CaO flowing in the blanking pipe of the C5-level cyclone preheater 6 as a preheating and drying neutralizing medium, and sandwiching the high-temperature raw material powder wrapped with the electrolytic manganese slag to vaporize water in the electrolytic manganese slag into high-temperature steam and ammonia radicals (NH) in the electrolytic manganese slag by taking the strong basic high-temperature raw material powder mainly containing CaO flowing in the blanking pipe of the C5-level cyclone preheater 6 as a preheating and drying neutralizing medium⁴⁺) Heated and volatilized to enter a decomposing furnace 5, so that the discharge amount of nitrogen oxides in the cement kiln is further reduced, solid materials in the electrolytic manganese residues enter a kiln tail smoke chamber 3 together with high-temperature raw material powder in a feeding pipe of a C5-grade cyclone preheater 6, the solid materials are mixed in the kiln tail smoke chamber 3 and then enter a rotary kiln 4 together, and the electrolytic manganese residues entering the rotary kiln 4 are converted into clinker or are wrapped in the clinker through high-temperature calcination treatment.

Example 3

Referring to fig. 3, the device for cooperatively treating electrolytic manganese slag based on the dry-method rotary kiln line mainly comprises a horizontal spiral conveyor 1C, a horizontal spiral conveyor 1d, a belt conveyor 1e, a bucket elevator 1f, an air-locking feeder 2, a kiln tail smoke chamber 3, a rotary kiln 4, a decomposing furnace 5, a C5A-level cyclone preheater 6a and a C5B-level cyclone preheater 6 b. The discharge hole of the belt conveyor 1e is communicated with the feed hole of a bucket elevator 1f, the discharge hole of the bucket elevator 1f is respectively communicated with the feed holes of a horizontal screw conveyor 1C and a horizontal screw conveyor 1d, the discharge holes of the horizontal screw conveyor 1C and the horizontal screw conveyor 1d are respectively communicated with the feed hole of an air-locking feeder 2, the first discharge hole of the air-locking feeder 2 corresponding to the horizontal screw conveyor 1C is communicated with the lower end (after the lower pipe is provided with a flap valve) of a discharge pipe of a C5A-level cyclone preheater 6a, the second discharge hole of the air-locking feeder 2 corresponding to the horizontal screw conveyor 1d is communicated with the lower end (after the lower pipe is provided with a flap valve) of a discharge pipe of a C5B-level cyclone preheater 6b, the discharge hole of the discharge pipe of the C5A-level cyclone preheater 6a is communicated with the first feed hole of a kiln tail chamber 3, the discharge port of the discharge pipe of the C5B-level cyclone preheater 6b is communicated with the second feed port of the kiln tail smoke chamber 3, the air outlet of the kiln tail smoke chamber 3 is communicated with the air inlet of the decomposing furnace 5 through a pipeline, the discharge port of the kiln tail smoke chamber 3 is communicated with the feed port of the rotary kiln 4, and the first air outlet and the second air outlet of the decomposing furnace 5 are respectively communicated with the air inlets of the C5A-level cyclone preheater 6a and the C5B-level cyclone preheater 6b through pipelines.

The working process of the embodiment is as follows: the wet electrolytic manganese slag is metered and weighed by the belt conveyor 1e and then is continuously conveyed to a bucket elevator 1f, then is continuously conveyed to a horizontal spiral conveyor 1C and a horizontal spiral conveyor 1d respectively by the bucket elevator 1f, the horizontal spiral conveyor 1C and the horizontal spiral conveyor 1d are respectively conveyed to corresponding air-locking feeders 2, then is respectively fed into the blanking pipes of a C5A-grade cyclone preheater 6a and a C5B-grade cyclone preheater 6b by the corresponding air-locking feeders 2, the blanking pipes of the C5A-grade cyclone preheater 6a and the C5B-grade cyclone preheater 6b of a dry-method rotary kiln preheater system are used as preheating and drying neutralization devices of the electrolytic manganese slag, strong-alkaline high-temperature raw material powder mainly containing CaO flowing in the blanking pipes of the C5A-grade cyclone preheater 6a and the C5B-grade cyclone preheater 6b is used as a preheating and neutralizing medium for quickly drying and neutralizing the acidic electrolytic manganese slag, the high-temperature raw meal powder wrapped with the electrolytic manganese slag enables the water in the electrolytic manganese slag to be vaporized into high-temperature steam and ammonia radicals (NH) in the electrolytic manganese slag⁴⁺) Heated to volatilize into a decomposing furnace 5 to decompose NH₃NO produced by combustion of fuel in decomposing furnace 5_XReaction to form N₂And the using amount of denitrified ammonia water is further reduced, solid materials in the electrolytic manganese slag enter the kiln tail smoke chamber 3 together with high-temperature raw material powder in the discharge pipes of the C5A-level cyclone preheater 6a and the C5B-level cyclone preheater 6b, the solid materials and the high-temperature raw material powder are mixed in the kiln tail smoke chamber 3 and then enter the rotary kiln 4 together, and the electrolytic manganese slag entering the rotary kiln 4 is converted into clinker through high-temperature calcination treatment or is wrapped in the clinker.

Claims

1. The utility model provides an equipment based on dry process rotary kiln cement manufacture line coprocessing electrolytic manganese sediment mainly includes rotary kiln (4), kiln tail smoke chamber (3) and dore furnace (5), its characterized in that: the kiln tail smoke chamber is characterized by further comprising a manganese slag metering and conveying device (1) and an air-locking feeder (2), wherein the end of the manganese slag metering and conveying device (1) is communicated with the feed inlet of the air-locking feeder (2), the discharge outlet of the air-locking feeder (2) is communicated with a kiln tail smoke chamber (3), and the kiln tail smoke chamber (3) is respectively communicated with a rotary kiln (4) and a decomposing furnace (5).

2. The apparatus for co-processing electrolytic manganese slag based on dry rotary kiln cement production line according to claim 1, characterized in that: the manganese slag metering and conveying device (1) comprises a quantitative feeder (1 a), an inclined screw conveyor (1 b) and a horizontal screw conveyor (1 c), wherein a discharge hole of the quantitative feeder (1 a) is communicated with a feed hole of the inclined screw conveyor (1 b), and a discharge hole of the inclined screw conveyor (1 b) is communicated with a feed hole of the horizontal screw conveyor (1 c).

3. The apparatus for co-processing electrolytic manganese slag based on dry rotary kiln cement production line according to claim 1, characterized in that: the manganese slag metering and conveying device (1) comprises a quantitative feeder (1 a) and a belt conveyor (1 e), and a discharge hole of the quantitative feeder (1 a) is communicated with a feed hole of the belt conveyor (1 e).

4. The apparatus for co-processing electrolytic manganese residues based on a dry rotary kiln cement production line according to one of claims 1 to 3, characterized in that: a cyclone preheater (6) is arranged between the air-locking feeder (2) and the decomposing furnace (5), the lower end of a discharging pipe of the cyclone preheater (6) is communicated with a discharging hole of the air-locking feeder (2) after the discharging pipe is provided with a flap valve, the discharging hole of the discharging pipe of the cyclone preheater (6) is communicated with a feeding hole of the kiln tail smoke chamber (3), and an air outlet of the decomposing furnace (5) is communicated with an air inlet of the cyclone preheater (6) through a pipeline.

5. The apparatus for co-processing electrolytic manganese residues based on a dry rotary kiln cement production line according to one of claims 1 to 3, characterized in that: a C5A-grade cyclone preheater (6 a) and a C5B-grade cyclone preheater (6 b) are arranged between the air-locking feeder (2) and the decomposing furnace (5), a first discharge hole of the air-locking feeder (2) and the lower end of a discharge pipe of the C5A-grade cyclone preheater (6 a), the second discharge hole of the air-locking feeder (2) is communicated with the lower end of the blanking pipe of the C5B-level cyclone preheater (6 b), the discharge port of the discharge pipe of the C5A-grade cyclone preheater (6 a) is communicated with the first feed port of the kiln tail smoke chamber (3), the discharge hole of the discharge pipe of the C5B-grade cyclone preheater (6 b) is communicated with the second feed hole of the kiln tail smoke chamber (3), the first air outlet and the second air outlet of the decomposing furnace (5) are respectively communicated with the air inlets of a C5A-grade cyclone preheater (6 a) and a C5B-grade cyclone preheater (6 b) through pipelines.

6. The apparatus for co-processing electrolytic manganese slag based on dry rotary kiln cement production line according to claim 4, characterized in that: the cyclone preheater (6) is a C5-grade cyclone preheater.

7. The device for the cooperative treatment of the electrolytic manganese slag on the basis of the dry-method rotary kiln cement production line according to the claim 5 is characterized in that: the cyclone preheater (6) is a C5-grade cyclone preheater.