CN101602029A - From raw coal and select the technology of cleaned coal in the locked middlings of coal - Google Patents
From raw coal and select the technology of cleaned coal in the locked middlings of coal Download PDFInfo
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Abstract
From raw coal and select the technology of cleaned coal in the locked middlings of coal, enter the method that the slime separation machine carries out sorting after desliming before the choosing of this process using, the fragmentation.It can go into to wash the back produces and chooses cleaned coal in the locked middlings in the coal from raw coal and coal for coking, it is simple to have technology, the coal separation cost is low, the advantage that efficient is high, it is without floating agent, and the water source reusable edible does not pollute the environment, the cleaned coal of producing is used for formed coke coal blending or export trade, and middle coal, coal slime are used to produce the raw material of moulded coal and biomass coal.
Description
Technical field
The present invention relates to a kind of coal preparation technique, particularly a kind of locked middlings with raw coal and middle coal carries out choosing after the fragmentation technology of cleaned coal.
Background technology
Contained rich coal in the coal for coking, coking coal, lean coal all is the rare coal of Heilongjiang Province, coal for coking substantially all goes into to wash, cleaned coal is used for coking, middle coal direct marketing is made fuel to power plant, with 2006 was example, Heilongjiang Province's coal for coking is 1,686 ten thousand tons, wherein have 30% about 5,000,000 tons be used for power plant, containing granularity in these in the coal is the following locked middlings of 50mm, if it is crushed to below the granularity 5mm, wherein contain about 30% cleaned coal, issue over a year in 5,000,000 tons of power plant and comprise 1,500,000 tons cleaned coal in the coal, the coal direct marketing has been made fuel to power plant in these 5,000,000 tons, cause the very big wasting of resources, same, also contain a large amount of locked middlingses in the various raw coal, directly also can cause the wasting of resources as fuel, the existing cleaned coal technology of selecting is owing to coal separation cost height, and efficient is low, contaminated environment, can't extensively be implemented, also do not had at present to clean in the locked middlings of therefrom coal and raw coal the moulding process of cleaned coal.
Summary of the invention
The purpose of this invention is to provide the technology of selecting cleaned coal in a kind of coal separation cost is low, efficient is high, free from environmental pollution therefrom coal and the locked middlings in the raw coal.
Technical solution of the present invention is: enter the method that the slime separation machine carries out sorting after desliming before the choosing of this process using, the fragmentation, specifically may further comprise the steps:
A, the lump coal that utilizes raw coal sizing screen to sift out in raw coal or the middle coal land, and the material under the sieve enters disintegrating machine one and carries out fragmentation, and the material after the fragmentation enters the desliming classifying screen;
B, the material after utilizing the desliming classifying screen to disintegrating machine one fragmentation carry out desliming and screening, the oversize lump coal of desliming classifying screen enter behind the disintegrating machine sledging with desliming classifying screen sieve under material together enter cyclone;
C, material enter thickener in the effect underflow stream of cyclone, and underflow enters the slime separation machine;
D, utilize circulating water pool to provide process water to the slime separation machine, the mixture of material and water is through the sorting of slime separation machine, and overflow enters vibration sieve bend one, and underflow enters vibration sieve bend two;
E, enter vibration sieve bend one material through vibration sieve bend one screening, screenings enters thickener, oversize becomes cleaned coal after entering the centrifuge centrifugal dehydration, the centrifugate of centrifuge enters thickener;
F, enter vibration sieve bend two material through vibration sieve bend two screenings, screenings enters thickener, oversize enters high frequency sieve;
G, enter high frequency sieve material through the screening of high frequency sieve, screenings enters thickener, oversize forms middle coal slime;
H, the material that enters thickener concentrate the underflow that forms and enter the filter press dehydration and produce middle coal slime in thickener, the overflow of thickener and the filtrate of filter press enter circulating water pool and provides process water for the slime separation machine.
Technique effect of the present invention is: it can go into to wash the back produces and chooses cleaned coal in the locked middlings in the coal from raw coal and coal for coking, it is simple to have technology, the coal separation cost is low, the advantage that efficient is high, it is without floating agent, and the water source reusable edible does not pollute the environment, the cleaned coal of producing is used for formed coke coal blending or export trade, and middle coal, coal slime are used to produce the raw material of moulded coal and biomass coal.
Description of drawings
Accompanying drawing is an embodiment of the invention process chart.
The specific embodiment
As shown in the figure, raw coal or middle coal are subjected to coalpit in the raw coal goods yard through raw coal, by oscillating feeder, entering sieve aperture through raw coal belt conveyer one is that the raw coal sizing screen of 50～80mm sifts out lump coal and lands, screenings is sent into the desliming classifying screen that sieve aperture is 1～3mm via disintegrating machine one broken back by raw coal belt conveyer two, the oversize lump coal of desliming classifying screen enters to be squeezed into the cyclone overflow with screenings by the pan feeding pump behind the disintegrating machine sledging and enters thickener, underflow enters the slime separation machine, the separator overflow enters vibration sieve bend one, screenings enters thickener, oversize enters centrifuge, it after the centrifugal dehydration final head coal product, centrifugate enters thickener, the underflow of slime separation machine enters vibration sieve bend two, the screenings of vibration sieve bend two enters thickener, oversize enters the high frequency sieve, high frequency sieve screenings enters thickener, high frequency sieve oversize is middle coal slime, thickener underflow is squeezed into the filter press dehydration by pump, filter press is produced in coal slime and the high frequency sieve coal slime and is converged and be coal slime in the final products, filter press filtrate and thickener overflow enter circulating water pool, the water of circulating water pool is supplied with the slime separation machine and is made the technology water, can be that circulating water pool replenishes the water source by clear water reserviors when the water shortage in the circulating water pool.
This process using is carried out sorting from the screening installation TBS slime separation machine that Australia introduces, and its technology is simple, and energy consumption is low, without medium, medicament, can not produce water wasting, has both saved the energy, and is free from environmental pollution again, is a kind of coal preparation technique of energy-conserving and environment-protective.
Claims (8)
1, from raw coal and select the technology of cleaned coal in the locked middlings of coal, enter the method that the slime separation machine carries out sorting after desliming before the choosing of this process using, the fragmentation, specifically may further comprise the steps:
A, the lump coal that utilizes raw coal sizing screen to sift out in raw coal or the middle coal land, and the material under the sieve enters disintegrating machine one and carries out fragmentation, and the material after the fragmentation enters the desliming classifying screen;
B, the material after utilizing the desliming classifying screen to disintegrating machine one fragmentation carry out desliming and screening, the oversize lump coal of desliming classifying screen enter behind the disintegrating machine sledging with desliming classifying screen sieve under material together enter cyclone;
C, material enter thickener in the effect underflow stream of cyclone, and underflow enters the slime separation machine;
D, utilize circulating water pool to provide process water to the slime separation machine, the mixture of material and water is through the sorting of slime separation machine, and overflow enters vibration sieve bend one, and underflow enters vibration sieve bend two;
E, enter vibration sieve bend one material through vibration sieve bend one screening, screenings enters thickener, oversize becomes cleaned coal after entering the centrifuge centrifugal dehydration, the centrifugate of centrifuge enters thickener;
F, enter vibration sieve bend two material through vibration sieve bend two screenings, screenings enters thickener, oversize enters high frequency sieve;
G, enter high frequency sieve material through the screening of high frequency sieve, screenings enters thickener, oversize forms middle coal slime;
H, the material that enters thickener concentrate the underflow that forms and enter the filter press dehydration and produce middle coal slime in thickener, the overflow of thickener and the filtrate of filter press enter circulating water pool and provides process water for the slime separation machine.
2, as claimed in claim 1 from raw coal and select the technology of cleaned coal in the locked middlings of coal, the sieve aperture that it is characterized in that raw coal sizing screen is 50～80mm.
3, as claimed in claim 1 from raw coal and select the technology of cleaned coal in the locked middlings of coal, the sieve aperture that it is characterized in that the desliming classifying screen is 1～3mm.
4, as claimed in claim 1 from raw coal and select the technology of cleaned coal in the locked middlings of coal, it is characterized in that raw coal or middle coal are subjected to coalpit in the raw coal goods yard through raw coal, by oscillating feeder, enter raw coal sizing screen through raw coal belt conveyer one again.
5, as claimed in claim 1 from raw coal and select the technology of cleaned coal in the locked middlings of coal, it is characterized in that the screenings of raw coal sizing screen is sent into the desliming classifying screen via disintegrating machine one broken back by raw coal belt conveyer two.
6, as claimed in claim 1 from raw coal and select the technology of cleaned coal in the locked middlings of coal, squeeze into cyclone with screenings by the pan feeding pump after the oversize lump coal that it is characterized in that the desliming classifying screen enters the disintegrating machine sledging.
7, as claimed in claim 1 from raw coal and select the technology of cleaned coal in the locked middlings of coal, it is characterized in that thickener underflow squeezes into filter press by pump.
8, as claimed in claim 1 from raw coal and select the technology of cleaned coal in the locked middlings of coal, it is characterized in that when the water shortage in the circulating water pool being that circulating water pool replenishes process water by clear water reserviors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100724337A CN101602029B (en) | 2009-06-27 | 2009-06-27 | Process for selecting cleaned coals from gangue coals of raw coals and middling coals |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009100724337A CN101602029B (en) | 2009-06-27 | 2009-06-27 | Process for selecting cleaned coals from gangue coals of raw coals and middling coals |
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| Publication Number | Publication Date |
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| CN101602029A true CN101602029A (en) | 2009-12-16 |
| CN101602029B CN101602029B (en) | 2012-07-25 |
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| CN2009100724337A Expired - Fee Related CN101602029B (en) | 2009-06-27 | 2009-06-27 | Process for selecting cleaned coals from gangue coals of raw coals and middling coals |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101797532A (en) * | 2010-04-07 | 2010-08-11 | 黑龙江科技学院 | Coal separating process of crude coal slime hydroseparation |
| CN102059174A (en) * | 2010-12-19 | 2011-05-18 | 烟台金华选煤工程有限公司 | Cleaned coal dehydration process and equipment combination for realizing same |
| CN102179288A (en) * | 2010-12-21 | 2011-09-14 | 王万明 | Coal-reselecting process for heavy media coal separation |
| CN102357405A (en) * | 2011-08-21 | 2012-02-22 | 太原艾柯夫选煤技术有限公司 | Middling coal crushing, recleaning and quality improving method |
| CN102500466A (en) * | 2011-12-28 | 2012-06-20 | 高华 | Technique for recycling cleaned coal from low-value gangue or tail coal of coal washery |
| CN102627977A (en) * | 2012-03-30 | 2012-08-08 | 中国矿业大学(北京) | Method for expanding coking coal resources |
| CN103721840A (en) * | 2013-12-16 | 2014-04-16 | 李兴海 | Middling coal breaking and dissociation TBS main recleaning process |
| CN104588404A (en) * | 2014-11-27 | 2015-05-06 | 中国矿业大学 | Washing selecting repairing treatment process for organic contaminated soil |
| CN104722389A (en) * | 2015-03-02 | 2015-06-24 | 中国矿业大学 | Dissociating, independent slurry mixing and bulk floatation process for fine grain middings |
| CN104815748A (en) * | 2015-04-26 | 2015-08-05 | 中国矿业大学 | Two-stage crushing and grinding flotation technology for coking medium coal |
| CN104984819A (en) * | 2015-07-31 | 2015-10-21 | 金易通科技(北京)股份有限公司 | Oil shale tailings beneficiation process |
| CN105126991A (en) * | 2015-07-23 | 2015-12-09 | 金易通科技(北京)股份有限公司 | Main washing technology of coal |
| CN105964392A (en) * | 2016-06-20 | 2016-09-28 | 中国神华能源股份有限公司 | Coal dressing and desliming system |
| CN108117879A (en) * | 2016-11-28 | 2018-06-05 | 宝山钢铁股份有限公司 | The blending method that a kind of part moisture-control grading crushes |
| CN110756315A (en) * | 2019-09-24 | 2020-02-07 | 杭州龙山化工有限公司 | Water washing coal system and lump coal washing method thereof |
| WO2021253304A1 (en) * | 2020-06-18 | 2021-12-23 | Zhongyang Mingyuan Coal Preparation Plant | Clean coal production system and method |
| CN114700169A (en) * | 2022-01-17 | 2022-07-05 | 淮北矿业股份有限公司 | Separation process suitable for treating fine-grain hard-dressing coking coal with high middling coal content |
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| HUT53560A (en) * | 1987-10-06 | 1990-11-28 | Haldex Vallalat | Method for separating the granules of coal and dead from aqueous suspension in two-stage hydrocyclone system |
| CN100457281C (en) * | 2006-07-08 | 2009-02-04 | 枣庄矿业(集团)有限责任公司 | Raw coal sorting process |
| CN100571880C (en) * | 2007-03-26 | 2009-12-23 | 开滦(集团)有限责任公司煤业分公司 | A kind of process of floating tail-coal graded recovery |
| CN101455992B (en) * | 2008-12-10 | 2012-05-02 | 重庆南桐矿业有限责任公司南桐选煤厂 | Power coal and sulfur concentrate sorting method and special device thereof |
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- 2009-06-27 CN CN2009100724337A patent/CN101602029B/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101797532A (en) * | 2010-04-07 | 2010-08-11 | 黑龙江科技学院 | Coal separating process of crude coal slime hydroseparation |
| CN102059174A (en) * | 2010-12-19 | 2011-05-18 | 烟台金华选煤工程有限公司 | Cleaned coal dehydration process and equipment combination for realizing same |
| CN102059174B (en) * | 2010-12-19 | 2016-01-20 | 烟台金华选煤工程有限公司 | A kind of cleaned coal dehydration and realize this technique equipment combination |
| CN102179288A (en) * | 2010-12-21 | 2011-09-14 | 王万明 | Coal-reselecting process for heavy media coal separation |
| CN102357405A (en) * | 2011-08-21 | 2012-02-22 | 太原艾柯夫选煤技术有限公司 | Middling coal crushing, recleaning and quality improving method |
| CN102500466A (en) * | 2011-12-28 | 2012-06-20 | 高华 | Technique for recycling cleaned coal from low-value gangue or tail coal of coal washery |
| CN102500466B (en) * | 2011-12-28 | 2013-04-17 | 高华 | Technique for recycling cleaned coal from low-value gangue or tail coal of coal washery |
| CN102627977A (en) * | 2012-03-30 | 2012-08-08 | 中国矿业大学(北京) | Method for expanding coking coal resources |
| CN103721840A (en) * | 2013-12-16 | 2014-04-16 | 李兴海 | Middling coal breaking and dissociation TBS main recleaning process |
| CN103721840B (en) * | 2013-12-16 | 2016-01-20 | 李兴海 | In one, the coal fragmentation TBS master that dissociates selects technique again |
| CN104588404A (en) * | 2014-11-27 | 2015-05-06 | 中国矿业大学 | Washing selecting repairing treatment process for organic contaminated soil |
| CN104588404B (en) * | 2014-11-27 | 2017-07-07 | 中国矿业大学 | A kind of washing repair process technique of organic polluted soil |
| CN104722389A (en) * | 2015-03-02 | 2015-06-24 | 中国矿业大学 | Dissociating, independent slurry mixing and bulk floatation process for fine grain middings |
| CN104722389B (en) * | 2015-03-02 | 2018-10-30 | 中国矿业大学 | Coal dissociation-is independently sized mixing-bulk flotation technique in a kind of particulate |
| CN104815748A (en) * | 2015-04-26 | 2015-08-05 | 中国矿业大学 | Two-stage crushing and grinding flotation technology for coking medium coal |
| CN104815748B (en) * | 2015-04-26 | 2017-06-20 | 中国矿业大学 | The broken mill floatation process of two sections of coal in a kind of coking |
| CN105126991A (en) * | 2015-07-23 | 2015-12-09 | 金易通科技(北京)股份有限公司 | Main washing technology of coal |
| CN104984819B (en) * | 2015-07-31 | 2017-12-19 | 金易通科技(北京)股份有限公司 | A kind of oil shale end ore deposit ore-dressing technique |
| CN104984819A (en) * | 2015-07-31 | 2015-10-21 | 金易通科技(北京)股份有限公司 | Oil shale tailings beneficiation process |
| CN105964392A (en) * | 2016-06-20 | 2016-09-28 | 中国神华能源股份有限公司 | Coal dressing and desliming system |
| CN108117879A (en) * | 2016-11-28 | 2018-06-05 | 宝山钢铁股份有限公司 | The blending method that a kind of part moisture-control grading crushes |
| CN110756315A (en) * | 2019-09-24 | 2020-02-07 | 杭州龙山化工有限公司 | Water washing coal system and lump coal washing method thereof |
| CN110756315B (en) * | 2019-09-24 | 2021-10-15 | 杭州龙山化工有限公司 | Lump coal washing method of coal washing system |
| WO2021253304A1 (en) * | 2020-06-18 | 2021-12-23 | Zhongyang Mingyuan Coal Preparation Plant | Clean coal production system and method |
| CN114700169A (en) * | 2022-01-17 | 2022-07-05 | 淮北矿业股份有限公司 | Separation process suitable for treating fine-grain hard-dressing coking coal with high middling coal content |
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