CN101387204A - Coal dehydration technology under hole for coal mine - Google Patents
Coal dehydration technology under hole for coal mine Download PDFInfo
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- CN101387204A CN101387204A CNA2007100551485A CN200710055148A CN101387204A CN 101387204 A CN101387204 A CN 101387204A CN A2007100551485 A CNA2007100551485 A CN A2007100551485A CN 200710055148 A CN200710055148 A CN 200710055148A CN 101387204 A CN101387204 A CN 101387204A
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Abstract
The invention discloses a water coal underground dewatering technology for a coal mine, wherein a multi-layered vibration-classifying dewatering sieve is arranged on an unloading position of a first water coal conveying unit; materials on the sieve are conveyed to a coal milling hole through the conveying unit, and slime water below the sieve flows into a sedimentation tank; a slime cleaning pump is utilized for pumping slime at the bottom of the sedimentation tank into a slime centrifuge for dewatering treatment; centrifugate returns to the sedimentation tank for concentration; the dewatered slime is conveyed to the coal milling hole through the conveying unit; and overflow water in the sedimentation tank flows into an underground drain sump, so as to prevent industrial accidents in the steps of belt transportation, lifting, storage and so on caused by water coal. The water coal underground dewatering technology for the coal mine has the characteristics of low labor intensity of workers, good dewatering effect and so on.
Description
Technical field:
The present invention relates to dewatering system under the water colliery of a kind of colliery.
Background technology:
The well worker mines owing to reasons such as work plane water bursts, usually cause a large amount of moisture to enter into coal stream, when the run-of-mine coal (ROM coal) water content〉during 20% left and right sides, coal-water mixture just is rendered as the two-phase fluid of thickness state, be commonly called as " water coal ", the appearance of water coal has brought a series of problem for subsequent jobs such as transportation, lifting and storage, causes belt creep, tail silt coal, rare coal slime to scurry production accidents such as storehouse, has increased worker's labour intensity greatly and has had a strong impact on the safety in production of mine.Be subjected to the water coal to influence storehouse belt accident and take place frequently, the water coal in the transportation on the belt is accumulated to belt machine end under the deadweight effect, and cleaning long-pending coal personnel increase, and labour intensity strengthens.Be to solve the problem of belt creep, increase the frictional force of cylinder and belt, make the belt normal operation, but this way is easy to the wearing and tearing that cause belt deviation and increased equipment by the son that in the belt head drum, sands.At present, mine still lacks system's effective measures of administering the water coal both at home and abroad, and a lot of production units wish can stop the appearance of water coal from the source and take relative measures.As: the measure that Coal Industry Group company in Datong District's adopts is at the fried at a certain distance polywater nest of coal-face, lays special discharge pipe line and water pump; Between gallery belt and inclined shaft belt, lay the drag conveyor that the head height tail is low simultaneously, there is the drag conveyor afterbody in unnecessary water, establish a dedicated pump nest and water pump and draw water; Control moisture in the raw coal by the method that increases raw coal output besides, avoid the water coal to occur.The Hebei gold can be taked multinomial measure by ore deposit, mineral bureau Yuanshi, Jingxing development section, stops confession, discharge pipe line run, drip, leak phenomenon on the supply line; In time clear up the water nest of coal bunker, the assurance coal bunker is not intake; The work plane supply line is carried out special messenger's draining, and the watering door is opened timely pass at any time during producing coal, and the water coal is drawn in control.But because the underground work condition is complicated and changeable, above method all can not be stopped the formation of water coal, and most of mine main have to still transport as usual after the water coal occurring, promote and storage, to many troubles that subsequent handling is brought, often causes mine to stop production.
Use for reference the vibrosieve dewatering of coal preparation plant's piece cleaned coal, Zheng's coal group Pei Gou colliery and Jiaozhuo Coal Industry Group company nine Li Shan ore deposits once adopted vibrosieve that the water coal is carried out dewatering operation, though received certain effect, but still exist the vibrosieve costs and poor dehydration results, maintenance capacity is big and disadvantage such as a large amount of coal slime losses, the bad adaptability that the mine working condition is changed.This is because the underground work inclement condition, water coal amount is big and contain the bulk of a great deal of granularity more than 400mm, make that compass screen surface is impaired, due to the sieve pore blockade, dewatering screen is because blocked up " metalling run out " phenomenon that also often occurs of solid accumulation on the compass screen surface has influenced dehydrating effect greatly.Simultaneously because of backwater not being further processed, and leave that it enters shaft sump, cause in the backwater contained a large amount of fine slime to be deposited, directly have influence on the safety in production of mine, increased tank and water-house coal mud clearing workload in sump and tank on the way.The vibrosieve system can not add quickly and easily or withdraws from main coal streamline according to the mine condition of production, has influenced the continuity that mine is produced.
Summary of the invention:
The purpose of this invention is to provide a kind of dewatering efficiency height, effective, labour intensity is low, automaticity is high coal dehydration technology under hole for coal mine.
To achieve these goals, the present invention adopts following technical scheme: in first road water coal haulage device unloading place, a multilayer vibration separation dewatering screen is set, oversize is transported to milling coal hole through haulage device, and sieve black water down flow into sedimentation basin, utilizes the coal slime of coal slurry digging pump with the sedimentation basin bottom, be pumped into and carry out processed in the coal slime centrifuge, centrifugate is returned sedimentation basin and is concentrated, and the coal slime after the dehydration is transported to milling coal hole through haulage device, and the overflow water in the sedimentation basin flow into shaft sump.
Multilayer vibration separation dewatering screen adopts three layers of compass screen surface, and the superiors' compass screen surface screen-aperture is set to 50-100mm, and the middle level screen-aperture is set to 13-25mm, and orlop compass screen surface screen-aperture is set to 0.5-3mm.
Sieve adopts the mode of multiple spot dosing to add organic flocculant when black water flows into sedimentation basin down.
Mechanization degree height of the present invention, the compliance that the underground working condition is changed is strong, can add quickly and easily or throw away main coal according to practical condition and flow production system, from the source to the dewatering operation of water coal implementation system, still can safe and continuous production when guaranteeing that big water burst appears in mine in the down-hole, can add quickly and easily or throw away main coal stream production system according to practical condition, thoroughly stop the water coal cause the production accident of links such as belt transportation, lifting, storage; It is low to have labor strength; Characteristics such as dehydrating effect is good.
Description of drawings:
Below in conjunction with accompanying drawing the present invention is described in further detail.
Fig. 1 is the process blocks schematic diagram of the technology of the present invention.
The specific embodiment:
As shown in Figure 1, when mine water outlet coal,, a multilayer vibration separation dewatering screen is set in first road water coal haulage device unloading place.Multilayer vibration separation dewatering screen adopts three layers of compass screen surface, and the superiors' compass screen surface screen-aperture is set to 50-100mm, in order to remove the bulk in the water coal, protection lower floor compass screen surface; The middle level screen-aperture is set to 13-25mm, is used to alleviate lower floor's compass screen surface load, improves dehydrating effect; Orlop compass screen surface screen-aperture is set to 0.5-3mm, is as the criterion with the dehydrating effect that guarantees oversize.For bearing the impact of bulk, the castor bar compass screen surface that the upper strata compass screen surface adopts robust nichrome casting to form; Be control compass screen surface sieve pore blockade and the maximum percent opening of acquisition, the middle level compass screen surface adopts the elastic rod compass screen surface, and lower floor's compass screen surface adopts the string compass screen surface.On middle level compass screen surface and lower floor's compass screen surface, add the compass screen surface water spray, hydraulic pressure 0.15-0.3MPa, the cleaning sieve aperture improves dehydrating effect, and the clear water that the compass screen surface water spray can utilize water pump to extract sedimentation basin top is realized.Be installed on the specific guide rail, when mine went out dry coal and need not dewatering operation, multilayer vibration separation dewatering screen can be withdrawn from from main coal streamline quickly and easily.The moisture of oversize can satisfy the requirement of transportation and storage less than 13%, directly enters into the next process of main coal stream, transports to milling coal hole through haulage device.Sieve black water down flow into sedimentation basin, carries out the concentrating clarifying operation, and sedimentation basin can excavate a tunnel in the down-hole temporarily, then its two is sealed the formation sedimentation basin, and black water is by an end pan feeding, and other end overflow is similar to the spitzkasten in the coal preparation plant.For ease of sedimentary discharging and extraction, sedimentation basin bottom from both sides to the middle part and feeding end all certain gradient should be arranged to effluent head.Utilize the coal slime of coal slurry digging pump with the sedimentation basin bottom, be pumped into and carry out processed in the coal slime centrifuge, centrifugate is returned sedimentation basin and is concentrated, fine slime moisture＜20% after the dehydration, can satisfy the requirement of lower procedure, coal slime after the dehydration is transported to milling coal hole through haulage device, and the overflow water clear water in the sedimentation basin is pumped into shaft sump by water pump.For the sedimentation of quickening solid particle in the black water and the dehydrating effect that improves sedimentation basin underflow high concentration coal slurry, obtain limpid overflow water simultaneously, when flowing into sedimentation basin, adopt backwater the mode of multiple spot dosing to add organic flocculant.Part overflow water is by serving as the dewatering screen sieve water source of water spray down after the pump pressurization, realize recyclingly, and most of overflow water enters into shaft sump.
Claims (3)
1, a kind of coal dehydration technology under hole for coal mine, it is characterized in that in first road water coal haulage device unloading place, a multilayer vibration separation dewatering screen is set, oversize is transported to milling coal hole through haulage device, and sieve black water down flow into sedimentation basin, utilizes the coal slime of coal slurry digging pump with the sedimentation basin bottom, be pumped into and carry out processed in the coal slime centrifuge, centrifugate is returned sedimentation basin and is concentrated, and the coal slime after the dehydration is transported to milling coal hole through haulage device, and the overflow water in the sedimentation basin flow into shaft sump.
2, coal dehydration technology under hole for coal mine according to claim 1, it is characterized in that described multilayer vibration separation dewatering screen adopts three layers of compass screen surface, the superiors' compass screen surface screen-aperture is set to 50-100mm, the middle level screen-aperture is set to 13-25mm, and orlop compass screen surface screen-aperture is set to 0.5-3mm.
3, coal dehydration technology under hole for coal mine according to claim 1 is characterized in that sieving down when black water flows into sedimentation basin and adopts the mode of multiple spot dosing to add organic flocculant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100551485A CN101387204A (en) | 2007-09-12 | 2007-09-12 | Coal dehydration technology under hole for coal mine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100551485A CN101387204A (en) | 2007-09-12 | 2007-09-12 | Coal dehydration technology under hole for coal mine |
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| CN101387204A true CN101387204A (en) | 2009-03-18 |
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| CNA2007100551485A Pending CN101387204A (en) | 2007-09-12 | 2007-09-12 | Coal dehydration technology under hole for coal mine |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101555803B (en) * | 2009-05-15 | 2011-05-11 | 景继东 | Method for preventing accumulation of downhole floating coal of coal mine |
| CN102407048A (en) * | 2011-09-29 | 2012-04-11 | 山西潞安环保能源开发股份有限公司 | Underground coal slime water processing system |
| CN102926802A (en) * | 2012-10-30 | 2013-02-13 | 开滦(集团)有限责任公司东欢坨矿业分公司 | Method for reducing silt coal by using underground water drainage tunnel of coal mine |
| CN102926803A (en) * | 2012-10-30 | 2013-02-13 | 开滦(集团)有限责任公司东欢坨矿业分公司 | Water drainage method for simultaneously exploiting water and coals under complicated hydrological condition |
| CN102943691A (en) * | 2012-10-30 | 2013-02-27 | 开滦(集团)有限责任公司东欢坨矿业分公司 | Method for reducing silt coal slime in underground water sump of large water coal mine |
| CN108266224A (en) * | 2018-01-13 | 2018-07-10 | 山东莱芜煤矿机械有限公司 | A kind of coal mine underground sump digs clearly process and its equipment |
| CN108487931A (en) * | 2018-04-02 | 2018-09-04 | 河南理工大学 | A kind of water burst in face short route processing method being applicable in underground fluctuation of concentration |
| CN109488298A (en) * | 2018-12-27 | 2019-03-19 | 远安县燎原矿业有限责任公司 | One kind low-grade phosphate ore stone stope of band containing shale cleans ore-sorting system and method |
| CN111359304A (en) * | 2020-04-02 | 2020-07-03 | 中国天楹股份有限公司 | Slag water recovery system and recovery method for waste incineration slag separation plant |
-
2007
- 2007-09-12 CN CNA2007100551485A patent/CN101387204A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101555803B (en) * | 2009-05-15 | 2011-05-11 | 景继东 | Method for preventing accumulation of downhole floating coal of coal mine |
| CN102407048A (en) * | 2011-09-29 | 2012-04-11 | 山西潞安环保能源开发股份有限公司 | Underground coal slime water processing system |
| CN102943691B (en) * | 2012-10-30 | 2014-12-10 | 开滦(集团)有限责任公司东欢坨矿业分公司 | Method for reducing silt coal slime in underground water sump of large water coal mine |
| CN102926803A (en) * | 2012-10-30 | 2013-02-13 | 开滦(集团)有限责任公司东欢坨矿业分公司 | Water drainage method for simultaneously exploiting water and coals under complicated hydrological condition |
| CN102943691A (en) * | 2012-10-30 | 2013-02-27 | 开滦(集团)有限责任公司东欢坨矿业分公司 | Method for reducing silt coal slime in underground water sump of large water coal mine |
| CN102926803B (en) * | 2012-10-30 | 2014-12-10 | 开滦(集团)有限责任公司东欢坨矿业分公司 | Water drainage method for simultaneously exploiting water and coals under complicated hydrological condition |
| CN102926802A (en) * | 2012-10-30 | 2013-02-13 | 开滦(集团)有限责任公司东欢坨矿业分公司 | Method for reducing silt coal by using underground water drainage tunnel of coal mine |
| CN102926802B (en) * | 2012-10-30 | 2014-12-10 | 开滦(集团)有限责任公司东欢坨矿业分公司 | Method for reducing silt coal by using underground water drainage tunnel of coal mine |
| CN108266224A (en) * | 2018-01-13 | 2018-07-10 | 山东莱芜煤矿机械有限公司 | A kind of coal mine underground sump digs clearly process and its equipment |
| CN108266224B (en) * | 2018-01-13 | 2023-06-16 | 山东莱芜煤矿机械有限公司 | Underground coal mine sump dredging process and equipment thereof |
| CN108487931A (en) * | 2018-04-02 | 2018-09-04 | 河南理工大学 | A kind of water burst in face short route processing method being applicable in underground fluctuation of concentration |
| CN108487931B (en) * | 2018-04-02 | 2020-04-14 | 河南理工大学 | Working face water burst short-flow processing method suitable for underground concentration fluctuation |
| CN109488298A (en) * | 2018-12-27 | 2019-03-19 | 远安县燎原矿业有限责任公司 | One kind low-grade phosphate ore stone stope of band containing shale cleans ore-sorting system and method |
| CN111359304A (en) * | 2020-04-02 | 2020-07-03 | 中国天楹股份有限公司 | Slag water recovery system and recovery method for waste incineration slag separation plant |
| CN111359304B (en) * | 2020-04-02 | 2022-04-29 | 中国天楹股份有限公司 | Slag water recovery system and recovery method for waste incineration slag separation plant |
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Open date: 20090318 |