CN102269012A - Process and equipment for increasing block coal rate - Google Patents
Process and equipment for increasing block coal rate Download PDFInfo
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- CN102269012A CN102269012A CN2011101882797A CN201110188279A CN102269012A CN 102269012 A CN102269012 A CN 102269012A CN 2011101882797 A CN2011101882797 A CN 2011101882797A CN 201110188279 A CN201110188279 A CN 201110188279A CN 102269012 A CN102269012 A CN 102269012A
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Abstract
The invention relates to a process and equipment for coal mine production, in particular to a process and equipment for increasing block coal rate. The technical problem of reduced block coal rate resulted from the disadvantages of fully mechanized coal mining equipment, in particular the process matched design of a crusher and an elevating conveyor, in the coal mine underground mining process is solved. The process is characterized by comprising the following steps: a coal block and slack coal mixture body obtained by cutting through a coal mining machine is sorted through a screening device; the block coal not less than 200 mm is sorted and delivered out of the rear section of the screening device and is conveyed away by bypassing the crusher; large block coal to be crushed is fed to the crusher to be crushed and then is conveyed to a main conveying belt through the elevating conveyor; the sorted mixed coal less than 200 mm is conveyed to the outlet of the crusher through a sorting conveying section by bypassing the crusher, fed to the front section of the elevating conveyor, delivered to the main conveying belt, and then conveyed to a place aboveground; and the whole process of sorting, crushing and conveying is completed. The block rate of the coal with the diameter of 13-200 mm is comprehensively increased by 5-6%.
Description
Technical field
The present invention relates to a kind of Coal Production technology and device, be specially a kind of raising coal pieces rate technology and equipment thereof.
Background technology
In recent years, the most of large-scale Coal Production of China has been stepped into mechanical coal mining a large amount of utilizations in period, particularly fully-mechanized mining equipment, and the coal production straight line rises, for huge contribution has been made in the demand and the economic development of China's energy.Mining performing comprehensive coal mining equipment is mainly used in the coal production process, as broken coal, main by the flitting realization, coaling, by drag conveyor coal is advanced scraper-trough conveyer (drag conveyor), fortune coal to elevating conveyor tail unloads, again through by elevating conveyor coal being transported on the conveyor behind the crusher in crushing coarse coal, arrive district coal bin at last, main road haulage is lifted out well then, and face timbering and roof control are finished by hydraulic support, and provide personnel equipment's working space, the last goaf of effectively handling.Concrete condition can be understood from fully-mechanized mining working apparatus arrangement schematic diagram.No matter and two kinds of products of lump coal and foam coal all can appear in which kind of coal winning technology.But technology such as adopt with respect to traditional big gun, the excavated technology of mechanization, improved digging efficient, but can cause the piece rate to descend relatively simultaneously, in coal sales market, because the difference of the ingredient requirement in suitability for industrialized production causes the price of lump coal and foam coal that a certain distance is arranged, ton price gap hundreds of unit does not wait.So the ratio of lump coal and foam coal directly affects the economic benefit and the cost benefit in colliery.Responsibility Co., Ltd of Jincheng anthracite mining industry group for example, one has the large-scale anthracite enterprise that produces 50000000 tons of coals per year, be lost in more than 5 percent with regard to the piece rate, the loss that we can calculate it is worth, 50000000*5%=2500000 ton lump coal, if by lump coal increment per ton RMB calculating more than 350 yuan, full company can increase by 8.75 hundred million yuans of the output values.Be equivalent to increase the income from sales of a large-scale mine, economic benefit is surprising, if solved this technical barrier, economic benefit is considerable.
So the problem that improves lump coal rate is paid much attention in each big colliery, the whole nation, at present the technical data of getable raising lump coal rate more, for example, in " discussion that improves lump coal productivity ratio with put into practice " literary composition, the some kinds of measures that prevent coal crusher have been proposed, as improvement design to the coal mining machine roller pick, the anti-sharp impacts of coal store is improved design, the transportation transshipmenting tache reduces the impact improvement design, carry out the preceding sorting of crushing engine before entering the coal washing link, the foam coal is rejected, again will be greater than 200 millimeters sort out, enter crushing engine, less than 200 millimeters then directly enter coal washer, make the suitable coal cinder of portion size no longer pass through crushing engine like this, thereby saved energy consumption." coal preparation technology ", the fourth phase in 2007, reduce lump coal breaking and cross measure one literary composition of degradation rate, also point out, mechanical system to the crushing engine before the washed coal is transformed, and improves its grading function, makes to meet the requirements of coal cinder and in time discharge, thereby reduce the problem of overcrushing, also improved the lump coal rate after the fragmentation indirectly.The technician of our company studies the back and finds that the thinking of traditional raising lump coal rate still is confined to down-hole protecting against shock fragmentation, the technology set pattern of aboveground sorting.
Field observation through the technician is measured, China's coal-mine is produced all with fully-mechanized mining working and big mining and high comprehensive mining work plane, the mode of production that the mechanized flow process is very high is produced coal, broken link after coal cutting is finished, use the size distribution situation of the coal cinder that records behind the cutting coal machine coal breakage: diameter is less than 6 millimeters fine coal, foam coal (6-13mm), small-sized lump coal (13-25mm), medium-sized lump coal (25-80), large-scale lump coal (80-250).Use traditional transportation breaker, as the 200910227874.X self-moving reversed loader, resulting foam coal (6-13mm), small-sized lump coal (13-25mm), medium-sized lump coal (25-80), large-scale lump coal (80-250), the total piece rate of 13-200 millimeter is about 60%.Trace it to its cause is in broken bulk process, because of its big-and-middle fritter and the use of foam coal is an operation passage, so cause the loss of piece rate serious, from the source, just make lump coal rate descend, no matter how follow-up link makes great efforts, lump coal rate also can only remain on certain level, and economic benefit can not get effective performance, and this link is out in the cold a lot of years.
Summary of the invention
The present invention is in order to solve under coal mine fully-mechanized mining equipment in the mining process, the technical problem that refers in particular to the deficiency of crushing engine and elevating conveyor flow process matching design existence and cause lump coal rate to reduce, and provide a kind of raising coal pieces rate technology and exploiting field thereof early stage coal separation equipment.
The present invention is realized by following technical scheme, a kind of raising coal pieces rate technology, the step characteristics are coal cinder foam coal mixture process screening plant sortings that the coal-winning machine coal cutting obtains, the lump coal separation that is not less than 200 millimeters is gone out back segment to be walked around crushing engine and transports, then the coarse coal of need fragmentation is entered crushing engine and carry out break process, be transported to main travelling belt through elevating conveyor again, sort out less than 200 millimeters mixing coal, walk around crushing engine through sorting transportation section, transferring to crushing engine outlet enters the elevating conveyor leading portion and is transported to the main travelling belt aboveground, finish whole sorting, fragmentation, the process of transportation.
A kind of equipment that improves the coal pieces rate comprises crushing engine, elevating conveyor; The elevating conveyor structure comprises the bridge section and the section of landing, rise on the end portion of the section of landing and become uplift sector, uplift sector is provided with crushing engine, screening plant, conveying trough has the sorting mouth on the elevating conveyor uplift sector, has sorting transportation section in the elevating conveyor uplift sector, and sorting transportation section side goes out and rises, it is higher than the section of landing, the coal breakage point be provided with break away bucket and with the section of landing UNICOM.Described conveyance is scratch board conveyor independently, mainly bears the detour task of crushing engine of coal that transhipment sorts out.
Technology of the present invention and equipment are worked hard from the source that coal face produces coal, at first the raw coal that enters before the crushing engine is classified according to granular size, that is to say: not needing broken middle fritter and foam coal, before entering crushing engine, drain to next transportation system, walk around crushing engine and return main transportation system, in order to avoid unnecessary piece rate loss, carry out break process and need broken bulk to enter crushing engine, the coal pieces rate of coming out because of the variation fragmentation of its broken channel space is than effective many in the past, its reason is: in the moment that bulk is broken, because of its channel space big, bulk can be avoided the impact that the crushing engine of rotation at full speed is hung one's head rapidly under the effect of gravity, avoid by the situation of second-time breakage Cheng Mo, so, must broken bulk piece rate in shattering process improve, middle fritter is also avoided second-time breakage Cheng Mo, two kinds of combined factors effects can comprehensively improve 5-6 percentage point to diameter for the piece rate of (13-200mm).
Description of drawings
Fig. 1 is the structural representation of anti-overcrushing equipment of the present invention
Fig. 2 is the vertical view of Fig. 1
Fig. 3 is the partial enlarged drawing of Fig. 1
Fig. 4 is the partial enlarged drawing of Fig. 2
Fig. 5 is device elevating conveyor of the present invention and drag conveyor structure place schematic diagram
Fig. 6 is the vertical view of Fig. 5
Fig. 7 is that device of the present invention is at the installation site of down-hole schematic diagram
Fig. 8 is the B-B sectional drawing of Fig. 7
Fig. 9 is that the A of Fig. 7 is to view
Figure 10 is one of shape figure of sorting mouth
Figure 11 is two of the shape figure of sorting mouth
Figure 12 is three of the shape figure of sorting mouth
Among the figure: 1-conveyer belt, 2-elevating conveyor bridge section, 3-elevating conveyor uplift sector, 4-crushing engine, 5-electromagnet, 6-sorting transportation section, the 7-section of landing, 8-elevating conveyor baffle plate, 9-sorting mouth A, 10-sorting mouth B, 11-sorting mouth C, the 12-bucket that breaks away
,13-transports lane, 14
-Fully-mechanized mining working return airway and assistant conveyance system, the 15-coal body, the 16-support, the 17-coal-winning machine, 18-work plane scratch board conveyor, 19-elevating conveyor are subjected to the coal point.
The specific embodiment
As schematically shown in Figure 1, 2, a kind of equipment that improves the coal pieces rate comprises flexible two middle chain-and-flight conveyers, crushing engine, elevating conveyor; The elevating conveyor structure comprises bridge section 2 and the section of landing 7, the preceding 4 meters rises that make progress of the end portion of the section of landing 7 become elevating conveyor uplift sector 3, uplift sector is provided with crushing engine 4, the tail end of flexible two middle chain-and-flight conveyers 8 is the elevating conveyor uplift sector, conveying trough has sorting mouth 9,10,11 on the scraper plate elevating conveyor uplift sector, elevating conveyor uplift sector 3 is connected with elevating conveyor bridge portion section, form bridge conveyor, it has sorting transportation section 6, sorting transportation section side goes out and rises, its end is higher than the section of landing 7, and unloading end being provided with break away bucket 12 and with the section of landing 7 UNICOMs.Described conveyance is two flexible miniaturization elevating conveyors of medium chain independently, and the advantage of two medium chain scratch board conveyors is: freight volume is big, accident rate is low, safeguard well, bendable curvature height, the transhipment task that can be competent at middle-size and small-size lump coal and foam coal fully.
The position of described sorting mouth 9,10,11 is arranged in crushing engine and enters the mouth on first three joint chute plate, chute, sorting mouth 10 that sorting mouth A9 is positioned near work plane are positioned on second chute, sorting mouth C11 is positioned on the chute adjacent with crushing engine, sorting mouth B10 is positioned at both sides, chute both sides, openning is split into vertical arrow shaped, all opening inward flanges are oval angle, with the bulk under the leakproof not and scraper chain card take place and mix and cause the accident.Also can be rectangle as Figure 10,11,12 openings of being illustrated, perhaps is ellipticity, is rhombus, is rectangle, is other shapes such as two ends arc middle part rectangle.
Through the step sizing of three chutes, can will not need broken fritter and foam coal to leak down, on sorting transportation section like this.The coal that is leaked down by the transhipment of two medium chain scratch board conveyors walk around crushing engine to the crushing engine port of export, then reprint to the elevating conveyor bridge down unloading converge with the lump coal that the crushing engine outlet transports, arrive elevating conveyor unloading point coal breakage by elevating conveyor bridge portion, reach work plane and transport the middle-size and small-size coal cinder and the foam coal that come and no longer be subjected to second-time breakage and reach the purpose of carrying high lump rate.In order to prevent that bulk, middle plate, scraper chain from the generation of mixing and causing the accident taking place to block; (1) calutron is installed in plate the place ahead in leaking coal; absorption transports next ironware from work plane; to prevent that it from damaging scraper chain; (2) electrical equipment control aspect; utilize the overcurrent technology to control the control system of three machine transportation systems; reach the effect of mixing after-current moment increase and shutting down locking three machines takes place to block; the chain rupture accident that causes when preventing that scraper chain, card from mixing thing, middle plate and strong card takes place mix; after card is mixed the thing taking-up, recover the operation of three machines.
As Fig. 7,8 signals, whole assorting room is as follows, coal-winning machine downcuts raw coal from the work plane coal body, drop on the work plane drag conveyor, after arriving protrusion,, will fall on the sorting transportation section of its below less than 200 millimeters coal cinder sorting through the screening effect of sorting mouth, transport head to and be offloaded to the elevating conveyor tail and be subjected to the coal point, drive the raw coal head-end by elevating conveyor and carry; All the other are then transported crusher in crushing greater than 200 millimeters coarse coals, coal after the fragmentation continues to be transported to the crushing engine outlet section of landing, do not converge with the coal of processing through fragmentation, arrive elevating conveyor unloading point coal breakage by elevating conveyor bridge portion then, thereby finish whole coal mining, early stage sorting coal, broken processing overall process.
Claims (8)
1. equipment that improves the coal pieces rate, it is characterized in that: structure comprises drag conveyor, crushing engine, the elevating conveyor with bent ridge section; The elevating conveyor structure comprises bridge section (2) and the section of landing (7), the end portion of the section of landing (7) upwards rises becomes elevating conveyor uplift sector (3), uplift sector is provided with crushing engine (4), the front end of drag conveyor (8) rises and is uplift sector, conveying trough has sorting mouth A(9 on the drag conveyor uplift sector), sorting mouth B(10), sorting mouth C(11), elevating conveyor uplift sector (3) is connected with the drag conveyor uplift sector, form bridge portion, it has sorting transportation section (6), sorting transportation section side goes out and rises, its head end is higher than the section of landing (7), and the head end be provided with break away bucket (12) and with the section of landing (7) UNICOM.
2. one kind is improved coal pieces rate technology, it is characterized in that, coal cinder, the foam coal mixture process screening plant sorting of step for the coal-winning machine coal cutting is obtained, the lump coal separation that is not less than 200 millimeters is gone out, the residue bulk is transported to crushing engine carries out break process, be transported to main travelling belt through elevating conveyor again; Sort out less than 200 millimeters mixing coal, walk around crushing engine through sorting transportation section, lump coal after the fragmentation processing that transports with crushing engine outlet converge by elevating conveyor bridge portion arrive elevating conveyor unloading point coal breakage, be transported to the main travelling belt aboveground, finish whole sorting, fragmentation, the process of transportation.
3. the equipment of raising coal pieces rate according to claim 1, it is characterized in that: described sorting mouth A(9), sorting mouth B(10), sorting mouth C(11) the position be arranged in crushing engine and enter the mouth on first three joint chute plate, sorting mouth A(9) be positioned at chute, sorting mouth B(10 near work plane) be positioned on second chute, sorting mouth C(11) is positioned on the chute adjacent with crushing engine, sorting mouth B(10) is positioned at both sides, chute both sides, all edge of opening are oval angle, and sheet material is the manganese steel plate manufacturing of 50-60 millimeter.
4. according to the equipment of claim 1 or 3 described raising coal pieces rates, it is characterized in that: sorting mouth A(9), sorting mouth B(10), sorting mouth C(11) openning is split into vertically
Arrow shaped.
5. according to the equipment of claim 1 or 3 described raising coal pieces rates, it is characterized in that: sorting mouth A(9), sorting mouth B(10), sorting mouth C(11) openning is rectangle.
6. according to the equipment of claim 1 or 3 described raising coal pieces rates, it is characterized in that: sorting mouth A(9), sorting mouth B(10), sorting mouth C(11) the openning head is ellipticity.
7. according to the equipment of claim 1 or 3 described raising coal pieces rates, it is characterized in that: sorting mouth A(9), sorting mouth B(10), sorting mouth C(11) openning is rhombus.
8. according to the equipment of claim 1 or 3 described raising coal pieces rates, it is characterized in that: sorting mouth A(9), sorting mouth B(10), sorting mouth C(11) openning is rectangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110188279.7A CN102269012B (en) | 2011-07-06 | 2011-07-06 | Process and equipment for increasing block coal rate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110188279.7A CN102269012B (en) | 2011-07-06 | 2011-07-06 | Process and equipment for increasing block coal rate |
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| Publication Number | Publication Date |
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| CN102269012A true CN102269012A (en) | 2011-12-07 |
| CN102269012B CN102269012B (en) | 2014-01-15 |
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| CN201110188279.7A Active CN102269012B (en) | 2011-07-06 | 2011-07-06 | Process and equipment for increasing block coal rate |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105413841A (en) * | 2015-12-11 | 2016-03-23 | 济南澳海炭素有限公司 | Crushing and conveying system for carbon blocks |
| CN106948814A (en) * | 2017-03-17 | 2017-07-14 | 中国神华能源股份有限公司 | A kind of coal excavation apparatus and coal-mining method |
| CN110201881A (en) * | 2019-04-29 | 2019-09-06 | 内蒙古万众炜业科技环保股份公司 | A kind of big partial size coal coal washery |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3823863A1 (en) * | 1988-06-17 | 1989-12-21 | Ruhrkohle Ag | Underground-working method with hydraulic conveying and installation for carrying out the method |
| CN2479213Y (en) * | 2000-12-29 | 2002-02-27 | 煤炭科学研究总院太原分院 | Self-moving device for bridge-type elevating conveyor |
| CN2584571Y (en) * | 2002-11-04 | 2003-11-05 | 神华集团有限责任公司 | Continuous conveyer |
| CN101598018A (en) * | 2009-06-29 | 2009-12-09 | 煤炭科学研究总院太原研究院 | Supporting stepped type fragmentation behind the anchor driving machine, reprinting continuous transport equipment |
| CN201439717U (en) * | 2009-06-29 | 2010-04-21 | 煤炭科学研究总院太原研究院 | Back-up traveling type crushing and transfer continuous transportation device of tunneling and bolting machine |
| CN202215290U (en) * | 2011-07-06 | 2012-05-09 | 山西晋城无烟煤矿业集团有限责任公司 | Equipment for improving block coal yield |
-
2011
- 2011-07-06 CN CN201110188279.7A patent/CN102269012B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3823863A1 (en) * | 1988-06-17 | 1989-12-21 | Ruhrkohle Ag | Underground-working method with hydraulic conveying and installation for carrying out the method |
| CN2479213Y (en) * | 2000-12-29 | 2002-02-27 | 煤炭科学研究总院太原分院 | Self-moving device for bridge-type elevating conveyor |
| CN2584571Y (en) * | 2002-11-04 | 2003-11-05 | 神华集团有限责任公司 | Continuous conveyer |
| CN101598018A (en) * | 2009-06-29 | 2009-12-09 | 煤炭科学研究总院太原研究院 | Supporting stepped type fragmentation behind the anchor driving machine, reprinting continuous transport equipment |
| CN201439717U (en) * | 2009-06-29 | 2010-04-21 | 煤炭科学研究总院太原研究院 | Back-up traveling type crushing and transfer continuous transportation device of tunneling and bolting machine |
| CN202215290U (en) * | 2011-07-06 | 2012-05-09 | 山西晋城无烟煤矿业集团有限责任公司 | Equipment for improving block coal yield |
Non-Patent Citations (1)
| Title |
|---|
| 凌良辅等: "《提高块煤率生产的探讨与实践》", 《矿山压力与顶板管理》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105413841A (en) * | 2015-12-11 | 2016-03-23 | 济南澳海炭素有限公司 | Crushing and conveying system for carbon blocks |
| CN106948814A (en) * | 2017-03-17 | 2017-07-14 | 中国神华能源股份有限公司 | A kind of coal excavation apparatus and coal-mining method |
| CN106948814B (en) * | 2017-03-17 | 2019-04-05 | 中国神华能源股份有限公司 | A kind of coal excavation apparatus and coal-mining method |
| CN110201881A (en) * | 2019-04-29 | 2019-09-06 | 内蒙古万众炜业科技环保股份公司 | A kind of big partial size coal coal washery |
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| Publication number | Publication date |
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| CN102269012B (en) | 2014-01-15 |
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