CN104525358A - Process of coarse coal slime back washing in pre-desliming dense medium cyclone sorting - Google Patents
Process of coarse coal slime back washing in pre-desliming dense medium cyclone sorting Download PDFInfo
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- CN104525358A CN104525358A CN201410799531.1A CN201410799531A CN104525358A CN 104525358 A CN104525358 A CN 104525358A CN 201410799531 A CN201410799531 A CN 201410799531A CN 104525358 A CN104525358 A CN 104525358A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B7/00—Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B9/00—General arrangement of separating plant, e.g. flow sheets
- B03B9/005—General arrangement of separating plant, e.g. flow sheets specially adapted for coal
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Abstract
The invention discloses a process of coarse coal slime back washing in pre-desliming dense medium cyclone sorting. Pre-desliming is carried out on raw coal fed to be washed to obtain plus sieve raw coal and minus sieve coal slime water, and the plus sieve raw coal enters a dense medium cyclone directly to be sorted; hydraulic cyclone grading is carried out on the minus sieve coal slime water to obtain coarse coal slime and fine coal slime; the coarse coal slime is dehydrated and then fed into the dense medium cyclone again to be sorted; the fine coal slime enters a coal slime water system of the next procedure to be recovered and floated. By the utilization of the advantage that the sorting minimum of the dense medium cyclone is smaller than 0.25 mm, the coarse coal slime obtained after desliming is fed into the dense medium cyclone again to be sorted, so that the flow path is simplified, a set of conventional sorting equipment is omitted, a high-level and high-benefit production system with the non-pressure feeding three-product dense medium cyclone as the main washing equipment is formed, and equipment investment is lowered. Particularly, if the raw coal fed to be washed contains batt, coal slime is seriously slimed, conventional coarse coal slime sorting equipment is low in sorting index, and the process is high in sorting index and can meet process requirements.
Description
Technical field
The present invention relates to Coal Washing Techniques field, specifically coarse slime back washing technology in pre-desliming dual medium cyclone dressing.
Background technology
Because condition of coal seam occurrence is poor, roof and floor ratio is easier to fragmentation, and raw coal nature difference is large, and simultaneously along with the raising of mining mechanization degree and raw coal cleaning percent, the output of coal slime will roll up.In coal separation design, extensively adopt pre-desliming heavy medium cyclone sorting+separation of coarse slime (and fine slime floatation) process integration, in order to ensure desliming effect, the screen size of desliming screen generally gets 1-2mm.The first hydraulic classiciation of black water after desliming, then coarse slime (1.0 ~ 0.3mm or 2.0 ~ 0.3mm) carries out sorting separately, and fine coal slurry (<0.3mm) carries out flotation.Advantage is that coarse slime carries out separately sorting and namely can increase clean coal recovery, reduces the load of floatation system, reduces producing cost, can reduce again the cleaned coal loss that flotation device causes coarse slime floatability difference.
At present, separation of coarse slime mainly adopts following several method: spiral washing, hindered bed separator washing, Slime dense medium cyclone washing, hydrocyclone washing etc.This several conventional method for separating all needs to purchase a set of screening installation, recruitment expense, and technique relative complex, and technic index can be subject to feed thickness, press from both sides the impact of the factors such as carefully amount, manual operation.Particularly entering to wash containing in dunn bass situation in raw coal, black water argillization is serious, and conventional separation of coarse slime equipment separation index is poor, can not meet technological requirement.
Summary of the invention
The object of the present invention is to provide coarse slime back washing technology in pre-desliming dual medium cyclone dressing, by the coarse slime after desliming is sent into dual medium cyclone dressing again, simplify flow process, save equipment investment cost.
For achieving the above object, the invention provides following technical scheme:
Coarse slime back washing technology in pre-desliming dual medium cyclone dressing, will enter to wash raw coal predictive desliming and obtain sieving raw coal and the lower black water of sieve, on sieve, dual medium cyclone dressing directly sent into by raw coal; Hydraulic cyclone classification is carried out to the lower black water of sieve and obtains coarse slime and fine coal slurry; After being dewatered by coarse slime, again send into dual medium cyclone dressing, fine coal slurry then enters that next process slime water system carries out reclaiming, flotation.
As the further scheme of the present invention, described dense medium cyclone is three-product HM cyclone.
As the further scheme of the present invention, described slime water system comprises fine slime flotation, concentrated, coal slime press filtration.
As the further scheme of the present invention, adopt desliming screen to raw coal predictive desliming, on sieve, three-product HM cyclone sorting directly sent into by raw coal, and the lower black water of sieve obtains overflow Bed for Fine Coal muddy water and underflow rough coal muddy water through hydraulic cyclone classification: overflow Bed for Fine Coal muddy water directly sends to slime water system; Underflow rough coal muddy water sends into three-product HM cyclone sorting after dehydration.
As the further scheme of the present invention, the aperture of described desliming screen is Φ 1.0mm or 2.0mm, and the partition size of described hydrocyclone is Φ 0.25 ~ 0.30mm.
As the further scheme of the present invention, obtain cleaned coal, middle coal and spoil after three-product HM cyclone sorting, described cleaned coal enters cleaned coal classification sculping screen, and described middle coal enters middle coal sculping screen, and described spoil enters Coal Stone Separation.
As the further scheme of the present invention, the compass screen surface of described cleaned coal classification sculping screen is divided into three sections, and oversize is block cleaned coal; Cleaned coal is fine cleaned coal after the screenings of compass screen surface first paragraph directly enters fine cleaned coal centrifuge dewatering; Under the second segment sieve of compass screen surface, rare medium enters the recovery of cleaned coal magnetic separator, magnetic concentrate enters qualified medium bucket, magnetic tailing enters coal slime bucket, hydroclone classification is squeezed into pump, after underflow centrifugal dehydration, recovery obtains as coarse grain cleaned coal, and hydrocyclone overflow and centrifugate enter slime water system and carries out subsequent treatment; Be qualified medium at the 3rd section of screenings of compass screen surface, enter raw coal and close Jie's bucket.
As the further scheme of the present invention, described middle coal therefrom coal sculping screen out after, oversize is middle coal, and the lower rare medium of sieve enters magnetic separator and sub-elects concentrate, mine tailing, and magnetic concentrate enters raw coal and closes Jie's bucket and carry out subsequent treatment; Mine tailing enters tail coal mud bucket and be mixed into middle product of coal after cyclone classification and dehydration, and hydrocyclone overflow enters slime water system and carries out subsequent treatment.
As the further scheme of the present invention, described spoil from Coal Stone Separation out after, oversize is spoil, sieves next section of qualified medium and sends into raw coal and close Jie's bucket and carry out subsequent treatment.Sieve lower two sections of rare media to enter magnetic separator and sub-elect concentrate, mine tailing, magnetic concentrate enters raw coal and closes Jie's bucket and carry out subsequent treatment; Mine tailing enters tail coal mud bucket and be mixed into middle product of coal after cyclone classification and dehydration, and hydrocyclone overflow enters slime water system and carries out subsequent treatment.
Compared with prior art, the invention has the beneficial effects as follows: the present invention utilizes the advantage of dual medium cyclone dressing lower limit < 0.25mm, coarse slime after desliming is sent into dual medium cyclone dressing again, simplify flow process, decrease a set of conventional screening installation, being formed by a pressureless fed three-product dense-medium cyclone is that master washes the high level of equipment, the production system of high benefit, saves equipment investment cost.Especially when entering to wash in raw coal to contain dunn bass, coal slime argillization is serious, and adopt conventional separation of coarse slime equipment separation index poor, separation index of the present invention is better, can meet technological requirement.
Accompanying drawing explanation
Fig. 1 is the general flow chart of coarse slime back washing technology in pre-desliming dual medium cyclone dressing;
Fig. 2 is the detail flowchart of coarse slime back washing technology in pre-desliming dual medium cyclone dressing.
Detailed description of the invention
Below in conjunction with the embodiment of the present invention and accompanying drawing, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 1, in the embodiment of the present invention, coarse slime back washing technology in pre-desliming dual medium cyclone dressing, will enter to wash raw coal predictive desliming and obtain sieving raw coal and the lower black water of sieve, on sieve, dual medium cyclone dressing directly sent into by raw coal; Hydraulic cyclone classification is carried out to the lower black water of sieve and obtains coarse slime and fine coal slurry; After being dewatered by coarse slime, again send into dual medium cyclone dressing, fine coal slurry then sends into slime water system.Described dense medium cyclone is three-product HM cyclone.Described slime water system comprises fine slime flotation, concentrated, coal slime press filtration.
Refer to Fig. 2, aperture is adopted to be that the desliming screen of Φ 1.0mm is to raw coal predictive desliming, on sieve, three-product HM cyclone sorting directly sent into by raw coal, and the lower black water of sieve is the hydroclone classification of Φ 0.25 ~ 0.30mm through partition size: overflow Bed for Fine Coal muddy water directly enters next procedure slime water system; Underflow Coarse Coal muddy water obtains cleaned coal, middle coal and spoil after upper raw coal is mixed into three-product HM cyclone sorting with sieve after dehydration, described cleaned coal enters cleaned coal classification sculping screen, described middle coal enters middle coal sculping screen, described spoil enters Coal Stone Separation, and fine coal slurry is then sent into slime water system and carried out reclaiming or flotation.
The compass screen surface of cleaned coal classification sculping screen is divided into three sections, and oversize is block cleaned coal, and block cleaned coal is directly as final cleaned coal; Cleaned coal is fine cleaned coal after the screenings of compass screen surface first paragraph directly enters fine cleaned coal centrifuge dewatering, and fine cleaned coal is through centrifuge second dehydration as final cleaned coal, and block fine cleaned coal is transported to cleaned coal warehousing by rubber conveyer and stores up; Under the second segment sieve of compass screen surface, rare medium enters the recovery of cleaned coal magnetic separator, magnetic concentrate enters qualified medium bucket, magnetic tailing enters coal slime bucket, hydroclone classification is squeezed into pump, after underflow centrifugal dehydration, recovery obtains as coarse grain cleaned coal, and hydrocyclone overflow and centrifugate enter slime water system and carries out subsequent treatment; Be qualified medium at the 3rd section of screenings of compass screen surface, enter raw coal and close Jie's bucket.
Middle coal therefrom coal sculping screen out after, oversize is middle coal, and middle coal is directly as coal in final; The lower rare medium of sieve enters magnetic separator and sub-elects concentrate, mine tailing, and magnetic concentrate enters raw coal conjunction Jie bucket and carries out subsequent treatment; Mine tailing enters tail coal mud bucket and be mixed into middle coal after cyclone classification and dehydration, and hydrocyclone overflow enters slime water system and carries out subsequent treatment.
Spoil from Coal Stone Separation out after, oversize is spoil, and spoil is transported to spoil place by rubber conveyer and stores after de-mediated dehydration, sieves next section of qualified medium and sends into raw coal and close Jie's bucket and carry out subsequent treatment.Sieve lower two sections of rare media to enter magnetic separator and sub-elect concentrate, mine tailing, magnetic concentrate enters raw coal and closes Jie's bucket and carry out subsequent treatment; Mine tailing enters tail coal mud bucket and be mixed into middle coal after cyclone classification and dehydration, and hydrocyclone overflow enters slime water system and carries out subsequent treatment.
The present invention utilizes the advantage of dual medium cyclone dressing lower limit < 0.25mm, coarse slime after desliming is sent into dual medium cyclone dressing again, simplify flow process, decrease a set of conventional screening installation, being formed by a pressureless fed three-product dense-medium cyclone is that master washes the high level of equipment, the production system of high benefit, saves equipment investment cost.Especially when entering to wash in raw coal to contain dunn bass, coal slime argillization is serious, and adopt conventional separation of coarse slime equipment separation index poor, separation index of the present invention is better, can meet technological requirement.
To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present invention or essential characteristic, the present invention can be realized in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present invention is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the present invention.
In addition, be to be understood that, although this description is described according to embodiment, but not each embodiment only comprises an independently technical scheme, this narrating mode of description is only for clarity sake, those skilled in the art should by description integrally, and the technical scheme in each embodiment also through appropriately combined, can form other embodiments that it will be appreciated by those skilled in the art that.
Claims (9)
1. coarse slime back washing technology in pre-desliming dual medium cyclone dressing, is characterized in that, will enter to wash raw coal predictive desliming and obtain sieving raw coal and the lower black water of sieve, on sieve, dual medium cyclone dressing directly sent into by raw coal; Hydraulic cyclone classification is carried out to the lower black water of sieve and obtains coarse slime and fine coal slurry; After being dewatered by coarse slime, again send into dual medium cyclone dressing, fine coal slurry then enters that next process slime water system carries out reclaiming, flotation.
2. coarse slime back washing technology in pre-desliming dual medium cyclone dressing according to claim 1, it is characterized in that, described dense medium cyclone is three-product HM cyclone.
3. coarse slime back washing technology in pre-desliming dual medium cyclone dressing according to claim 1, is characterized in that, described slime water system comprises fine slime flotation, concentrated, coal slime press filtration.
4. coarse slime back washing technology in pre-desliming dual medium cyclone dressing according to claim 2, it is characterized in that, adopt desliming screen to raw coal predictive desliming, on sieve, three-product HM cyclone sorting directly sent into by raw coal, and the lower black water of sieve obtains overflow Bed for Fine Coal muddy water and underflow rough coal muddy water through hydraulic cyclone classification: overflow Bed for Fine Coal muddy water directly sends to slime water system; Underflow rough coal muddy water sends into three-product HM cyclone sorting after dehydration.
5. coarse slime back washing technology in pre-desliming dual medium cyclone dressing according to claim 4, is characterized in that, the aperture of described desliming screen is Φ 1.0mm or 2.0mm, and the partition size of described hydrocyclone is Φ 0.25 ~ 0.30mm.
6. coarse slime back washing technology in pre-desliming dual medium cyclone dressing according to claim 2, it is characterized in that, cleaned coal, middle coal and spoil is obtained after three-product HM cyclone sorting, described cleaned coal enters cleaned coal classification sculping screen, described middle coal enters middle coal sculping screen, and described spoil enters Coal Stone Separation.
7. coarse slime back washing technology in pre-desliming dual medium cyclone dressing according to claim 6, is characterized in that, the compass screen surface of described cleaned coal classification sculping screen is divided into three sections, and oversize is block cleaned coal; Cleaned coal is fine cleaned coal after the screenings of compass screen surface first paragraph directly enters fine cleaned coal centrifuge dewatering; Under the second segment sieve of compass screen surface, rare medium enters the recovery of cleaned coal magnetic separator, magnetic concentrate enters qualified medium bucket, magnetic tailing enters coal slime bucket, hydroclone classification is squeezed into pump, after underflow centrifugal dehydration, recovery obtains as coarse grain cleaned coal, and hydrocyclone overflow and centrifugate enter slime water system and carries out subsequent treatment; Be qualified medium at the 3rd section of screenings of compass screen surface, enter raw coal and close Jie's bucket.
8. coarse slime back washing technology in pre-desliming dual medium cyclone dressing according to claim 6, it is characterized in that, described middle coal therefrom coal sculping screen out after, oversize is middle coal, the lower rare medium of sieve enters magnetic separator and sub-elects concentrate, mine tailing, and magnetic concentrate enters raw coal conjunction Jie bucket and carries out subsequent treatment; Mine tailing enters tail coal mud bucket and be mixed into middle product of coal after cyclone classification and dehydration, and hydrocyclone overflow enters slime water system and carries out subsequent treatment.
9. coarse slime back washing technology in pre-desliming dual medium cyclone dressing according to claim 6, is characterized in that, described spoil from Coal Stone Separation out after, oversize is spoil, sieves next section of qualified medium and sends into raw coal and close Jie's bucket and carry out subsequent treatment,
sieve lower two sections of rare media to enter magnetic separator and sub-elect concentrate, mine tailing, magnetic concentrate enters raw coal and closes Jie's bucket and carry out subsequent treatment; Mine tailing enters tail coal mud bucket and be mixed into middle product of coal after cyclone classification and dehydration, and hydrocyclone overflow enters slime water system and carries out subsequent treatment.
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104923387A (en) * | 2015-06-16 | 2015-09-23 | 蔡成 | Method for recycling wet process coal washing screen underflow |
| 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 |
| CN105665124A (en) * | 2016-04-13 | 2016-06-15 | 中国矿业大学 | High-intergrowth, high-ash and high-sulfur coal sorting and slurrying integrated process |
| CN105689109A (en) * | 2016-01-27 | 2016-06-22 | 中国矿业大学 | Coarse coal slime separation method of fine coal slime dense-medium hydrocyclone |
| 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 |
| CN106669960A (en) * | 2016-06-20 | 2017-05-17 | 中国矿业大学 | Dissociation and recleaning technology for coking fine grain middling coal |
| CN108745622A (en) * | 2018-05-28 | 2018-11-06 | 湖南兴辉洗选药剂科技开发有限公司 | A kind of jet coal washing system and washing method |
| CN109201314A (en) * | 2018-09-11 | 2019-01-15 | 乌拉特中旗毅腾矿业有限责任公司 | A kind of middle coal clean utilization production technology |
| CN109731674A (en) * | 2018-12-27 | 2019-05-10 | 山东科技大学 | A kind of steam coal separation method |
| CN110170370A (en) * | 2019-05-10 | 2019-08-27 | 唐山森普工程设计有限公司 | Reduce the system and technique of hm coal preparation plant gravity treatment sorting granularity lower limit |
| CN110961241A (en) * | 2019-11-05 | 2020-04-07 | 乌拉特中旗毅腾矿业有限责任公司 | Efficient and environment-friendly flotation feeding process and screening device thereof |
| CN112474033A (en) * | 2020-11-05 | 2021-03-12 | 阜新工大矿物加工利用科技有限公司 | Coal slime pre-desliming and sorting process |
| WO2021253304A1 (en) * | 2020-06-18 | 2021-12-23 | Zhongyang Mingyuan Coal Preparation Plant | Clean coal production system and method |
| CN114042528A (en) * | 2021-11-17 | 2022-02-15 | 六盘水师范学院 | Coal mine washing and selecting treatment system |
| CN114950713A (en) * | 2022-05-27 | 2022-08-30 | 徐州工程学院 | Heavy medium cyclone main recleaning coal separation process capable of improving clean coal recovery rate of coal difficult to separate |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4802976A (en) * | 1988-01-04 | 1989-02-07 | Miller Francis G | Method for recovering fine clean coal |
| CN101716552A (en) * | 2009-12-28 | 2010-06-02 | 河南理工大学 | Raw coal washing process capable of realizing non-polar ash conditioning |
| CN102211054A (en) * | 2011-05-30 | 2011-10-12 | 中国矿业大学 | Process for sorting coarse coal slime by utilizing heavy medium liquid-solid fluidized bed |
| CN102489391A (en) * | 2011-12-20 | 2012-06-13 | 重庆南桐矿业有限责任公司南桐选煤厂 | High-sulfur power raw coal sorting process |
| CN102847606A (en) * | 2012-09-01 | 2013-01-02 | 山东科技大学 | Coarse slime separation process |
| CN103143432A (en) * | 2013-02-28 | 2013-06-12 | 中国矿业大学 | Efficient crushing and three-section type screening method of coking coal gravity middings |
| CN103350027A (en) * | 2013-08-06 | 2013-10-16 | 煤炭科学研究总院唐山研究院 | Classified-desliming pressurized-feeding three-product dense medium cyclone coal preparation process |
-
2014
- 2014-12-22 CN CN201410799531.1A patent/CN104525358A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4802976A (en) * | 1988-01-04 | 1989-02-07 | Miller Francis G | Method for recovering fine clean coal |
| CN101716552A (en) * | 2009-12-28 | 2010-06-02 | 河南理工大学 | Raw coal washing process capable of realizing non-polar ash conditioning |
| CN102211054A (en) * | 2011-05-30 | 2011-10-12 | 中国矿业大学 | Process for sorting coarse coal slime by utilizing heavy medium liquid-solid fluidized bed |
| CN102489391A (en) * | 2011-12-20 | 2012-06-13 | 重庆南桐矿业有限责任公司南桐选煤厂 | High-sulfur power raw coal sorting process |
| CN102847606A (en) * | 2012-09-01 | 2013-01-02 | 山东科技大学 | Coarse slime separation process |
| CN103143432A (en) * | 2013-02-28 | 2013-06-12 | 中国矿业大学 | Efficient crushing and three-section type screening method of coking coal gravity middings |
| CN103350027A (en) * | 2013-08-06 | 2013-10-16 | 煤炭科学研究总院唐山研究院 | Classified-desliming pressurized-feeding three-product dense medium cyclone coal preparation process |
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104923387A (en) * | 2015-06-16 | 2015-09-23 | 蔡成 | Method for recycling wet process coal washing screen underflow |
| 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 |
| CN105689109A (en) * | 2016-01-27 | 2016-06-22 | 中国矿业大学 | Coarse coal slime separation method of fine coal slime dense-medium hydrocyclone |
| CN105665124A (en) * | 2016-04-13 | 2016-06-15 | 中国矿业大学 | High-intergrowth, high-ash and high-sulfur coal sorting and slurrying integrated process |
| CN105665124B (en) * | 2016-04-13 | 2019-05-28 | 中国矿业大学 | High intergrowth high ash sulphur coal sorts slurrying integral process |
| CN106669960A (en) * | 2016-06-20 | 2017-05-17 | 中国矿业大学 | Dissociation and recleaning technology for coking fine grain middling coal |
| CN106669960B (en) * | 2016-06-20 | 2019-02-22 | 中国矿业大学 | Technique is selected in the dissociation of coal again in a kind of coking particulate |
| 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 |
| CN108745622A (en) * | 2018-05-28 | 2018-11-06 | 湖南兴辉洗选药剂科技开发有限公司 | A kind of jet coal washing system and washing method |
| CN108745622B (en) * | 2018-05-28 | 2020-08-28 | 湖南兴辉洗选药剂科技开发有限公司 | Long flame coal washing system and washing method |
| CN109201314A (en) * | 2018-09-11 | 2019-01-15 | 乌拉特中旗毅腾矿业有限责任公司 | A kind of middle coal clean utilization production technology |
| CN109201314B (en) * | 2018-09-11 | 2020-12-01 | 乌拉特中旗毅腾矿业有限责任公司 | Clean utilization production process for middlings |
| CN109731674B (en) * | 2018-12-27 | 2023-03-28 | 山东科技大学 | Power coal separation method |
| CN109731674A (en) * | 2018-12-27 | 2019-05-10 | 山东科技大学 | A kind of steam coal separation method |
| CN110170370A (en) * | 2019-05-10 | 2019-08-27 | 唐山森普工程设计有限公司 | Reduce the system and technique of hm coal preparation plant gravity treatment sorting granularity lower limit |
| CN110961241A (en) * | 2019-11-05 | 2020-04-07 | 乌拉特中旗毅腾矿业有限责任公司 | Efficient and environment-friendly flotation feeding process and screening device thereof |
| WO2021253304A1 (en) * | 2020-06-18 | 2021-12-23 | Zhongyang Mingyuan Coal Preparation Plant | Clean coal production system and method |
| CN112474033A (en) * | 2020-11-05 | 2021-03-12 | 阜新工大矿物加工利用科技有限公司 | Coal slime pre-desliming and sorting process |
| CN114042528A (en) * | 2021-11-17 | 2022-02-15 | 六盘水师范学院 | Coal mine washing and selecting treatment system |
| CN114950713A (en) * | 2022-05-27 | 2022-08-30 | 徐州工程学院 | Heavy medium cyclone main recleaning coal separation process capable of improving clean coal recovery rate of coal difficult to separate |
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