CN101884946A - Continuous micro-pulverized coal preparing system - Google Patents

Continuous micro-pulverized coal preparing system Download PDF

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Publication number
CN101884946A
CN101884946A CN2009100280001A CN200910028000A CN101884946A CN 101884946 A CN101884946 A CN 101884946A CN 2009100280001 A CN2009100280001 A CN 2009100280001A CN 200910028000 A CN200910028000 A CN 200910028000A CN 101884946 A CN101884946 A CN 101884946A
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China
Prior art keywords
feed
ball mill
grader
mill barrel
discharge
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Pending
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CN2009100280001A
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Chinese (zh)
Inventor
耿海儒
李凤生
宋诘
刘宏英
顾志明
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Individual
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Individual
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Priority to CN2009100280001A priority Critical patent/CN101884946A/en
Publication of CN101884946A publication Critical patent/CN101884946A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a continuous micro-pulverized coal preparing system. The system comprises an exhaust fan and the like, wherein a blast valve and a discharge tube connector are arranged on the bottom of a discharge case respectively; the discharge tube connector is connected with the conical part of a grader through a discharge tube; a quick runner is arranged on the top of the grader; the discharge port of the quick runner is connected with the feed port of a collector through a grading tube; the discharge port of the conical part of the grader is connected with the feed port of a grading auger conveyor; the discharge port of the grading auger conveyor is aligned with a feed hopper; one end of a hollow pipe is connected with the feed hopper, while the other end of the hollow pipe is connected with a bearing block at the feed end; an air inlet port is reserved on the upper half part of the hollow pipe; and an air inlet pipe is welded at the air inlet port. The system has the following advantages: (1) the whole producing process is continuous without dust pollution; and (2) product granularity can be graded according to requirements; and air volume can be adjusted according to temperature by mounting the air inlet pipe and the blast valve, so the system can be cooled, is hardly blasted, and has good safety.

Description

Continuous micro-pulverized coal preparing system
Technical field
The invention belongs to the processing and manufacturing technology of nonmetallic materials, particularly a kind of continuous micro-pulverized coal preparing system.
Background technology
In order to strengthen and improve every performance of macromolecular material better,, need to add various types of fillers usually as impact strength, hot strength, scuff resistance, anti-aging etc.Report is arranged with coal and modifier abroad, coal-based plastics are produced in mixing such as, natural rubber fine as polyethylene, polypropylene, polystyrene, propylene and butadiene polymer.The ature of coal plastics that make can be used for the production and the processing of various goods.Adding d97 in rubber is 10 μ m microfine coals and other polymer modifiers etc., can improve the anti-wear performance and the ageing resistace of rubber, can replace the part carbon black, reaches the reduction material cost, improves the purpose of material property, energy-conserving and environment-protective.Along with the very fast development of Modern High-Tech, the application of microfine coal is more and more wider.Yet the technology of relevant serialization industrial production microfine coal is not appeared in the newspapers, existing ultra-fineization about coal mainly is the production that is applied to the water-coal-slurry of fuel industry, its main purpose is for the efficient burning of realizing coal and utilization, the fineness that requires is generally at 20-40 μ m, wet method is pulverized, crushing process is safer, nonflammable and blast.The fine coal specific area is bigger, and adsorbed water is more but wet method is pulverized, and has increased the difficulty of dehydration, and particularly dried coal dust performance reduces greatly, therefore is subjected to strict restriction in actual applications.The dry production of microfine coal has only the production of discontinuous at present, can not sealing and circulating, dust from flying is arranged when discharging, and harmful to operator's health.With regard to its reason mainly is that coal can produce a large amount of heat in the dry type crushing process, if can not in time discharge heat, temperature will be more and more higher, and is dangerous just big more; Thin more easy more the causing that coal dust is pulverized burnt or blast; The dry more easy more blast of coal dust.The suitability for industrialized production report that therefore, serialization dry process microfine coal is not arranged so far.
Summary of the invention
The object of the present invention is to provide a kind of control crushing process to heat up well-ventilated, continuous micro-pulverized coal preparing system not easy to blast.
The technical scheme that realizes the object of the invention is: a kind of continuous micro-pulverized coal preparing system, comprise air exhauster, the first air quantity valve, the exhausting tube connector, gatherer, the feed auger conveying device, former feed bin, feed hopper, the feed end bearing block, ball mill barrel, gear wheel, pinion, reductor, motor, feed box and discharge end bearing block, rod iron is added in the ball mill barrel, starter motor, through reductor, pinion, gear wheel drives the ball mill barrel rotation, with elevator rough coal is added feed hopper from former feed bin, rough coal enters ball mill barrel by the feed auger conveying device, ball mill barrel is by its charging, the bearing block at discharging two ends supports, set out hopper at discharge end, in the feed box bottom the second air quantity valve and discharge nozzle interface are set respectively, this discharge nozzle interface is connected with the tapering of grader by discharge nozzle, the top of grader is provided with quick runner, the discharging opening of this impeller is connected with the charging aperture of gatherer by the classification tube connector, the discharging opening in grader tapering is connected with classification helix transporting device charging aperture, the discharging opening of this classification helix transporting device is aimed at feed hopper, hollow pipe one end is connected with feed hopper, the other end is connected with the feed end bearing block, the first half at hollow pipe has air inlet, at this air inlet place welding blast pipe.
The present invention compared with prior art, its remarkable advantage is: (1) whole process of production is continuous, does not have dust pollution; (2) product granularity can carry out classification on request; (3) operator is few, and cost reduces; (4) no compartment in the ball mill, the two ends of ball mill barrel are provided with the input and output material grate plate, this grate plate and at center formation through hole, well-ventilated, product yield height; (5) intake stack and air quantity valve are set, according to the adjustment air quantity, cooling system, not easy to blast, security is good.
Below in conjunction with accompanying drawing the present invention is described in further detail.
Description of drawings
Accompanying drawing is the formation schematic diagram of continuous micro-pulverized coal preparing system of the present invention.
The specific embodiment
In conjunction with the accompanying drawings, continuous micro-pulverized coal preparing system of the present invention, comprise air exhauster 1, the first air quantity valve 2, exhausting tube connector 3, gatherer 4, feed auger conveying device 8, former feed bin 9, feed hopper 10, feed end bearing block 12, ball mill barrel 13, gear wheel 14, pinion 15, reductor 16, motor 17, feed box 18 and discharge end bearing block 19, rod iron is added in the ball mill barrel 13, starter motor 17, through reductor 16, pinion 15, gear wheel 14 drives ball mill barrel 13 rotations, with elevator rough coal is added feed hopper 10 from former feed bin 9, rough coal enters ball mill barrel 13 by feed auger conveying device 8, ball mill barrel 13 is by its charging, the bearing block 12 at discharging two ends, 19 support, set out hopper 18 at discharge end, in feed box 18 bottoms the second air quantity valve 20 and discharge nozzle interface are set respectively, this discharge nozzle interface is connected with the tapering of grader 6 by discharge nozzle 21, the top of grader 6 is provided with quick runner, the discharging opening of this impeller is connected by the charging aperture of classification tube connector 5 with gatherer 4, the discharging opening in grader 6 taperings is connected with classification helix transporting device 7 charging apertures, the discharging opening of this classification helix transporting device 7 is aimed at feed hopper 10, hollow pipe one end is connected with feed hopper 10, the other end is connected with feed end bearing block 12, the first half at hollow pipe has air inlet 11, at this air inlet 11 places welding blast pipe.Wherein, no compartment in the ball mill, the two ends of ball mill barrel 13 are provided with the input and output material grate plate, this grate plate links to each other with the grate plate support, this grate plate support links to each other with two end flanges of cylindrical shell 13, and each grate plate is fan-shaped, is formed centrally circular through hole in cylindrical shell 13, grate plate and cylindrical shell 13 rotate synchronously, the well-ventilated.
Embodiment: in conjunction with the accompanying drawings, in continuous micro-pulverized coal preparing system of the present invention, at first add differ in size diameter and the rod iron of length than 1: 1 by ratio of grinding media to material, starter motor 17, through reductor 16, pinion 15, gear wheel 14 drive 13 rotations of ball milling cylindrical shell.Successively air exhauster 1, the first air quantity valve 2, gatherer 4, grader 6 are opened.The small coal of the about 10mm of raw material enters feed hopper 10 through former feed bin 9, enter ball mill barrel by feed auger conveying device 8, ball mill barrel supports by two end axles bearing 12,19, set out hopper 18 at discharge end, the second air quantity valve 20 is according to the temperature rise of ball milling cylindrical shell 13 and the size (temperature is detected by infrared radiation thermometer) of product fineness and blast pipe 11 endoporus, determine the size of the second air quantity valve, 20 openings, the second air quantity valve 20 can be 1~3, and the valve opening is 1/4~3/4 of a full mouth.Coal dust after the pulverizing enters grader 6 through discharge nozzle 21, the classified adapter 5 of fine powder enters gatherer 4, fine powder enters the gatherer collection and enters packaging bag, purified gas is discharged atmosphere through exhausting tube connector 3 by the dust flue of air exhauster 1, and the outlet below the classified machine of meal enters classification helix transporting device 7 and turns back to feed hopper again and enter and continue in the ball mill barrel 13 to pulverize.The fineness of product is adjusted the parameter of grader as requested, the output of product can be according to fineness requirement, the thin more output of general fineness descends, the thick more output of fineness is high more, because having increased intake stack and infrared radiation thermometer detects, make temperature constant in the ball mill, therefore can continuously produce high performance microfine coal, realized the suitability for industrialized production of continuous micro-pulverized coal preparing.
Press grating earlier with Φ 14x14, Φ 24x24, the column rod iron of Φ 35x35 etc. is pressed ratio and is added interior about 13 tons of ball mill barrel, 1.5 tons of small coals that former feed bin added about 10mm, starter motor 17 is by reductor 16, pinion 15, the transmission system that gear wheel 14 is formed drive ball milling cylindrical shell 13 rotations (per minute 22 changes).Blast pipe 11 is 2, and internal diameter is 40 millimeters.The number of blast pipe and diameter are complementary according to the discharging opening air door of ball mill in the production reality and air exhauster and get final product, and blast pipe can be 1~4, and the pipe interior diameter can be 30~100 millimeters.Start air exhauster 1, gatherer 4, grader 6, grader 6 rotors are adjusted into per minute 5000 to be changeed.Start feed auger conveying device 8, grader helix transporting device 7, open first and second air quantity valve 2,20 and make it opening, detect ball mill barrel 13 temperature at 70 degree with infrared radiation thermometer at 1/4 of full mouth.After raw meal through in ball mill and pulverizing, under the effect of air exhauster, enter grader 6 classifications through feed box 18, discharge nozzle 21, meal returns feed hopper 10 again through the classification helical feed, fine powder enters in the gatherer 4 through classification tube connector 5, through filtering, purified gas enters air exhauster tube connector 3, and the discharge pipe that enters air exhauster is discharged.The finished product coal dust all in 10 μ m, has reached the index of specification requirement through granularity d97 that gatherer comes out.

Claims (4)

1. continuous micro-pulverized coal preparing system, comprise air exhauster [1], the first air quantity valve [2], exhausting tube connector [3], gatherer [4], feed auger conveying device [8], former feed bin [9], feed hopper [10], feed end bearing block [12], ball mill barrel [13], gear wheel [14], pinion [15], reductor [16], motor [17], feed box [18] and discharge end bearing block [19], rod iron is added in the ball mill barrel [13], starter motor [17], through reductor [16], pinion [15], gear wheel [14] drives ball mill barrel [13] rotation, with elevator rough coal is added feed hopper [10] from former feed bin [9], rough coal enters ball mill barrel [13] by feed auger conveying device [8], ball mill barrel [13] is by its charging, the bearing block [12 at discharging two ends, 19] support, set out hopper [18] at discharge end, it is characterized in that: second air quantity valve [20] and the discharge nozzle interface is set respectively in feed box [18] bottom, this discharge nozzle interface is connected with the tapering of grader [6] by discharge nozzle [21], the top of grader [6] is provided with quick runner, the discharging opening of this impeller is connected by the charging aperture of classification tube connector [5] with gatherer [4], the discharging opening in grader [6] tapering is connected with classification helix transporting device [7] charging aperture, the discharging opening of this classification helix transporting device [7] is aimed at feed hopper [10], hollow pipe one end is connected with feed hopper [10], the other end is connected with feed end bearing block [12], the first half at hollow pipe has air inlet [11], locates to weld blast pipe at this air inlet [11].
2. continuous micro-pulverized coal preparing system according to claim 1 is characterized in that: blast pipe is 1~4, and the pipe interior diameter is 30~100 millimeters.
3. continuous micro-pulverized coal preparing system according to claim 1 is characterized in that: the second air quantity valve [20] is 1~3, and the valve opening is 1/4~3/4 of a full mouth.
4. continuous micro-pulverized coal preparing system according to claim 1, it is characterized in that: no compartment in the ball mill, the two ends of ball mill barrel [13] are provided with the input and output material grate plate, this grate plate links to each other with the grate plate support, this grate plate support links to each other with two end flanges of cylindrical shell [13], each grate plate is fan-shaped, is formed centrally circular through hole in cylindrical shell [13].
CN2009100280001A 2009-05-15 2009-05-15 Continuous micro-pulverized coal preparing system Pending CN101884946A (en)

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Application Number Priority Date Filing Date Title
CN2009100280001A CN101884946A (en) 2009-05-15 2009-05-15 Continuous micro-pulverized coal preparing system

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102814213A (en) * 2012-08-20 2012-12-12 永安市优胜竹制品厂 Method and device for grinding bamboo fine powder for bamboo plastic
CN103381380A (en) * 2013-07-19 2013-11-06 芜湖鑫泰铜业有限公司 Full-automatic copper slag crushing and screening machine
CN103495471A (en) * 2013-09-30 2014-01-08 英德市奥胜新材料有限责任公司 Device and method for regulating potassium feldspar powder size distribution
CN103846132A (en) * 2013-05-17 2014-06-11 洛阳宇航重工机械有限公司 Ball-milling classification production equipment for high-purity quartz powder
CN104084265A (en) * 2014-06-09 2014-10-08 灌阳县陈工选矿机械制造有限公司 A ball mill
CN104560245A (en) * 2013-12-07 2015-04-29 广西梧州日成林产化工股份有限公司 Method for preparing coal water slurry
CN104826727A (en) * 2015-04-27 2015-08-12 中国矿业大学 Fine-grained medium coal multistage grinding floating technology and system
CN106863575A (en) * 2016-12-22 2017-06-20 徐州工程学院 A kind of former made for air entrained concrete and its method of work
CN111185279A (en) * 2020-01-14 2020-05-22 宜昌中泰新材料有限公司 Barite ore grinding processing system

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102814213A (en) * 2012-08-20 2012-12-12 永安市优胜竹制品厂 Method and device for grinding bamboo fine powder for bamboo plastic
CN103846132A (en) * 2013-05-17 2014-06-11 洛阳宇航重工机械有限公司 Ball-milling classification production equipment for high-purity quartz powder
CN103381380A (en) * 2013-07-19 2013-11-06 芜湖鑫泰铜业有限公司 Full-automatic copper slag crushing and screening machine
CN103495471A (en) * 2013-09-30 2014-01-08 英德市奥胜新材料有限责任公司 Device and method for regulating potassium feldspar powder size distribution
CN103495471B (en) * 2013-09-30 2015-05-27 英德市奥胜新材料有限责任公司 Device and method for regulating potassium feldspar powder size distribution
CN104560245A (en) * 2013-12-07 2015-04-29 广西梧州日成林产化工股份有限公司 Method for preparing coal water slurry
CN104084265A (en) * 2014-06-09 2014-10-08 灌阳县陈工选矿机械制造有限公司 A ball mill
CN104826727A (en) * 2015-04-27 2015-08-12 中国矿业大学 Fine-grained medium coal multistage grinding floating technology and system
CN106863575A (en) * 2016-12-22 2017-06-20 徐州工程学院 A kind of former made for air entrained concrete and its method of work
CN111185279A (en) * 2020-01-14 2020-05-22 宜昌中泰新材料有限公司 Barite ore grinding processing system

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Open date: 20101117