CN109746116A - The method for separating of coal oil feed coal enrichment based on aqueous medium sorting - Google Patents
The method for separating of coal oil feed coal enrichment based on aqueous medium sorting Download PDFInfo
- Publication number
- CN109746116A CN109746116A CN201910110663.1A CN201910110663A CN109746116A CN 109746116 A CN109746116 A CN 109746116A CN 201910110663 A CN201910110663 A CN 201910110663A CN 109746116 A CN109746116 A CN 109746116A
- Authority
- CN
- China
- Prior art keywords
- coal
- product
- sorting
- tail
- tbs
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
- B03B5/02—Washing granular, powdered or lumpy materials; Wet separating using shaken, pulsated or stirred beds as the principal means of separation
- B03B5/10—Washing granular, powdered or lumpy materials; Wet separating using shaken, pulsated or stirred beds as the principal means of separation on jigs
-
- 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
- B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
- B03B5/62—Washing granular, powdered or lumpy materials; Wet separating by hydraulic classifiers, e.g. of launder, tank, spiral or helical chute concentrator type
- B03B5/66—Washing granular, powdered or lumpy materials; Wet separating by hydraulic classifiers, e.g. of launder, tank, spiral or helical chute concentrator type of the hindered settling type
-
- 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
Landscapes
- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
Abstract
A kind of coal oil feed coal process of enriching based on aqueous medium sorting is suitable for low-order coal and sorts field.Step are as follows: 3mm graded operation, jigging separation operation, TBS separation operation and each product dehydrate operation, + 3mm feed coal sorts to obtain block cleaned coal and tail coal using jigging, -3mm feed coal sorts to obtain fine cleaned coal and tail coal using TBS interference bed, respectively each product is carried out dehydrating to obtain final products again, effective sorting of each lithotype of coal is realized using the density variation between different lithotype of coal, and qualified cleaned coal is provided for subsequent coal oil link.It is suitable for the liquefaction coals of the different biggish low metamorphic grades of coal rock component density variation to greatly simplify process flow, reduce entreprise cost and investment without adding dielectric film filter technique and floatation process.
Description
Technical field
The present invention relates to a kind of method for separating, be particularly suitable for that a kind of low-order coal sorting field uses based on aqueous medium point
The method for separating of the coal oil feed coal enrichment of choosing.
Background technique
Coal, petroleum, natural gas are the most important three macrofossils energy in China, are develop and useedd in China's economic development
In play decisive role.China's verified oil reserves and its limited, have the petroleum dosage of more than half by import every year,
And import volume is still in continuous rise.Another aspect coal resources in China relative abundance, coal are still within following a period of time
The most stable and reliable energy, and there is the low order coal reserves of suitable coal direct liquefaction quite abundant in China, in coal benefit
With that in the process can be liquid fuel by this part low order coal liquefaction to substitute petroleum, it is externally interdependent to reduce petroleum, therefore to this kind of
The research of the beneficiation technologies of low-order coal liquefied active ingredient is particularly important, and the status for improving China's oil shortage has
Own strategic significance.
From the perspective of coal petrology, low order coal liquefaction with coal include three kinds of macerals: vitrinite, inertinite,
Chitin group, wherein chitin group content is very low based on vitrinite and inertinite, generally less than 1%.Vitrinite is with chitin group
The liquefied active constituent of low-order coal, and inertinite is the liquefied non-active ingredient of low-order coal, and liquefying activity sorts are as follows: chitin group
> vitrinite > inertinite, therefore chitin group in low-order coal and the enrichment of vitrinite (mainly vitrinite) lithotype of coal can be increased
Strong liquefaction reaction activity, improves the liquefaction oil product rate of recovery.Existing research shows the active coal petrography constituent content of every raising 10%, can
To improve 4% Oil Recovery rate, to greatly improve Business Economic Benefit, therefore the enrichment of coal rock component is for low-order coal
Liquefaction is of great significance.
China, Shanxi, Shan cover and Gan Qingning newly equal regional preservation a large amount of low ashes, low-sulfur, low-phosphorous high-quality low order liquefaction coal,
This kind of low-order coal has good reactivity, can be used as oil substitutes after direct liquefaction.Scholar and enterprise are to coal system at present
The problem of research field of oil tech is also more and more wide, research is also more and more deep, wherein the million of Shenhua coal oil company implementation
Ton coal becomes oily demonstration project, is exactly the strategic sex exploration to coal oil technology.Shenhua coal oil coal has special coal oil to use
Coal coal preparation plant, the cleaned coal that coal preparation plant selects are used as coal oil feed coal, still, inertinite content in the cleaned coal of coal preparation plant's output
It is higher, restrict the raising of Oil Recovery rate always, while also limiting the rising of profit margin, it is therefore necessary to this part
Active constituent in cleaned coal is further enriched with.Current existing technique is used to 50- after feed coal selective crushing
The technique of 0.5mm grade heavy medium cyclone, -0.5mm grade flotation obtains rich vitrinite and rich-inertinite coal, however, Shenhua
Coal oil coal belongs to low-order coal, itself has following characteristics: due to low-order coal molecular structure itself hydrophilic sex differernce compared with
It is small；Active constituent is larger in coarse fraction content, smaller in fine fraction especially -0.5mm grain size content.Therefore flotation link is to coal
Rock has little significance at separating/enriching, and the lower limit of separation of heavy medium cyclone is higher and fine fraction such as 3-0.5mm grade is difficult to
To efficient separation, and dielectric film filter process need to be added, technique is cumbersome, increases cost of investment, therefore develop and a kind of can effectively sort
50-0.5mm liquefies raw material coal, and simple process, invests lesser process flow and has become in coal petrography enrichment process and urgently solves
Certainly the problem of.
Summary of the invention
Technical problem: shortcoming in view of the above technology provides a kind of inexpensive, efficiency of separation height, rational technology, warp
The method for separating of the coal oil feed coal enrichment based on aqueous medium sorting for remarkable benefit of helping.
Technical solution: the method for separating of the coal oil feed coal enrichment of the invention based on aqueous medium sorting, step is such as
Under:
A. feed coal is fed into classifying screen and carries out 3mm classification, to obtain two kinds of coals that partial size is less than 3mm greater than 3mm and partial size
Material:
B. the coal material by partial size greater than 3mm feeds jigging machine and sorts, light to produce after the weight product layering in jigging machine
Object feeds block cleaned coal product and backwater on cleaned coal dewatering screen dehydration output sieve by overflow weir, and heavy product is by sieving upper discharge
Jigging machine is discharged with the mode of discharge of heavy mate rial through screen plate and enters tailings dewatering sieve, and upper tail coal product is sieved in dehydration output in tailings dewatering sieve
And backwater, the backwater that cleaned coal dewatering screen and tailings dewatering sieve export feed fishing hole respectively, pass through sediment overflow using fishing hole
Mode backwater is separated into recirculated water and underflow, recirculated water is used for sorting link, and underflow pumps and squeezes into tail coal filter press
Filters pressing；
C. the coal material by partial size less than 3mm is tangentially fed from the groove body upper end of TBS sorting machine, and partial size is less than the coal object of 3mm
Material does interference subsiding movement in TBS sorting machine and realizes that wherein low-density grade light product is with overflow from TBS points by density separation
Machine is selected to be discharged into the sieve bend screening of 0.5mm grade, the high density grade heavy product of TBS sorting machine is arranged from TBS sorting motor spindle
Enter tail coal centrifuge after expecting valve discharge, high density grade heavy product obtains tail coal product and centrifugation after the dehydration of tail coal centrifuge
Machine centrifugate, the on-the-sieve material after being sieved by sieve bend feed the dehydration of cleaned coal centrifuge obtain fine cleaned coal product and centrifuge from
Heart liquid, centrifuge centrifugate return to TBS sorting machine and are recycled；
D. underflow, the centrifuge centrifugate of tail coal centrifuge and the undersized product of sieve bend in fishing hole are fed into tail coal filter press
Filters pressing, obtains the tail coal mud product that partial size is less than 0.5mm after dehydration, filtrate is recycled as recirculated water.
It is less than 1.45g/cm that the separating density of the TBS sorting machine (C), which indicates its content by vitrinite,3Density level,
Proportion is 90%, and wherein vitrinite's coal content is 57%, is greater than 1.45g/cm3Density level proportion is 10%, wherein mirror matter
Group content is 57%.
Coal material proportion of the partial size greater than 3mm after TBS sorting machine (C) sorting is 93%, vitrinite therein
Content is 55%, and coal material proportion of the partial size less than 3mm is 7%, and vitrinite's content therein is 30%.
Entire sorting process only uses aqueous medium, without adding dielectric film filter technique.
Tail coal mud product (6) of the partial size less than 0.5mm is not necessarily to flotation, directly as tail coal product.
The utility model has the advantages that in the inventive solutions, right+3mm coal carries out jigging sorting after feed coal 3mm classification, p-
3mm feed coal carries out TBS sorting, separating density 1.45g/cm3, vitrinite and inertinite coal are effectively sorted, cleaned coal is reduced
The content of middle coal oil non-active ingredient inertinite coal, makes feed coal meet the secondary standard of direct liquefaction, i.e. inertinite content
15%~45%, to improve subsequent coal oil link Oil Recovery rate, economic benefit is increased for enterprise.Process flow benefit
3~0.5mm feed coal is sorted with the TBS for having preferable separating effect to fine fraction, and a jigging sorting pair+3mm coarse fraction has foot
Enough sharpness of separation, -0.5mm coal solve existing technique and are enriched with to fine fraction coal because inertinite content height is directly as tail coal
The problem of low efficiency, can be realized effective sorting of cleaned coal tail coal without adding medium, reduce the flotation link of -0.5mm, stream
Journey is simple, easy to operate, invests small.Classification and sorting is carried out to coal oil low-order coal, in 50~3mm, 3~0.5, the equal energy of -0.5mm
Preferable separating effect is obtained, to improve vitrinite's coal content in cleaned coal, is had to the enrichment of vitrinite in coal oil low-order coal
It has a clear superiority.
Detailed description of the invention
Fig. 1 is sorting process flow diagram of the invention.
Fig. 2 is screening installation structural schematic diagram of the invention.
In figure: 1- feed coal, 2- block cleaned coal product, 3- tail coal product, 4- fine cleaned coal produce, 5- tail coal product, 6- tail coal mud
Product, 7- recirculated water, A- classifying screen, B- jigging machine, C-TBS sorting machine, D- cleaned coal dewatering screen, E- tailings dewatering sieve, F- fishing hole,
G- sieve bend, H- cleaned coal centrifuge, I- tail coal centrifuge, J- tail coal filter press, a- tail coal centrifuge centrifugate, the centrifugation of b- cleaned coal
Machine centrifugate.
Specific embodiment:
Implementation of the invention is further described with reference to the accompanying drawing:
As depicted in figs. 1 and 2, the method for separating of the coal oil feed coal enrichment of the invention based on aqueous medium sorting, step
It is as follows:
A. feed coal 1 is fed into classifying screen A and carries out 3mm classification, to obtain two kinds that partial size is less than 3mm greater than 3mm and partial size
Coal material:
B. the coal material by partial size greater than 3mm feeds jigging machine B and sorts, after the weight product layering in jigging machine B, gently
Product feeds block cleaned coal product 2 and backwater on cleaned coal dewatering screen D dehydration output sieve by overflow weir, and heavy product passes through on sieve
The mode of discharge and discharge of heavy mate rial through screen plate is discharged jigging machine B and enters tailings dewatering sieve E, and in tailings dewatering sieve E on dehydration output sieve
The backwater of tail coal product 3 and backwater, cleaned coal dewatering screen D and tailings dewatering sieve E output feeds fishing hole F respectively, cheats F using fishing
Backwater is separated into recirculated water 7 and underflow by way of sediment overflow, recirculated water 7 is used for sorting link, underflow pump
Squeeze into tail coal filter press J filters pressing；
C. the coal material by partial size less than 3mm is tangentially fed from the groove body upper end of TBS sorting machine C, and partial size is less than the coal of 3mm
Material does interference subsiding movement in TBS sorting machine C and realizes by density separation, wherein low-density grade light product with overflow from
TBS sorting machine C is discharged into the sieve bend G screening of 0.5mm grade, and the high density grade heavy product of TBS sorting machine C is sorted from TBS
Enter tail coal centrifuge I after the discharge of machine C bottom discharge valve, high density grade heavy product obtains tail after tail coal centrifuge I dehydration
Product of coal 5 and centrifuge centrifugate a, the on-the-sieve material after being sieved by sieve bend G feed cleaned coal centrifuge H dehydration and obtain end essence
Product of coal 4 and centrifuge centrifugate b, centrifuge centrifugate b return to TBS sorting machine C recycling；The sorting of TBS sorting machine C is close
It is less than 1.45g/cm that degree, which indicates its content by vitrinite,3Density level, proportion 90%, wherein vitrinite's coal content be
57%, it is greater than 1.45g/cm3Density level proportion is 10%, and wherein vitrinite's content is 57%；Grain after TBS sorting machine C sorting
Coal material proportion of the diameter greater than 3mm is 93%, and vitrinite's content therein is 55%, shared by coal material of the partial size less than 3mm
Ratio is 7%, and vitrinite's content therein is 30%；
D. the undersized product by the underflow of fishing hole F, the centrifuge centrifugate a and sieve bend G of tail coal centrifuge I feeds tail coal pressure
Filter J filters pressing obtains the tail coal mud product 6 that partial size is less than 0.5mm after dehydration, filtrate is recycled as recirculated water 7, and partial size is small
It is not necessarily to flotation in the tail coal mud product 6 of 0.5mm, directly as tail coal product.
Entire sorting process only uses aqueous medium, without adding dielectric film filter technique.
Embodiment:
Coal oil feed coal coal sample used is derived from the head coal product of coal mine coal oil feed coal coal preparation plant, Shen Dong group, this feed coal
Active constituent is concentrated mainly in big grade, and different coal rock component density variations are larger, therefore can be real using reselecting method
Now efficient sorting, it is contemplated that it is wide that jigging machine sorts particle size range, and has enough sharpness of separation, TBS to coarse slime have compared with
Good separating effect, can be used TBS fine coal；
According to the lower limit of separation of jigging machine and the lower limit of separation of TBS, it is contemplated that be classified using 3mm ,+3mm grade proportion is
93%, active component content 56%, -3mm grade proportion is 7%, active component content 30%,
According to washability curve, separating density is substantially 8% in 1.45 or so, -1.45 density level proportions, and active constituent contains
Amount is 30%, and+1.45 density level proportions are 92%, active component content 57%；
Including using vibrating screen (sieve pore 3mm), jigging machine, hindered bed separator (TBS), centrifugal dehydrator, cleaned coal dewatering screen, tail
Coal dewatering sieve, fishing hole, sieve bend (0.5mm), filter press.Firstly, using drag conveyor by feed coal 1 feed classifying screen A into
Row 3mm classification, on-the-sieve material are sent into batcher, feed jigging machine B by batcher, after the layering of weight product, light product passes through
Overflow weir enters cleaned coal dewatering screen D, is used as block cleaned coal product 2 on sieve after cleaned coal dehydration, and backwater enters fishing hole F；Heavy product exists
Lower layer is discharged by way of sieving upper discharge and discharge of heavy mate rial through screen plate, is sieved E into tailings dewatering, is used as tail coal product 3 after tailings dewatering,
Backwater enters fishing hole F；Fishing hole F overflow is used as recirculated water 7 for sorting link, and underflow pump squeezes into tail coal filter press J；
- 3mm grade feed coal is tangentially fed from the groove body upper end of TBS sorting machine C after classifying screen A classification, and material is in sorting machine
In do interference subsiding movement, press density separation to realize, low-density grade is discharged with overflow, by 0.5mm sieve bend G, on sieve
Material is directly as fine cleaned coal product 4 after cleaned coal centrifuge H dehydration, and centrifuge centrifugate returns in TBS sorting machine C, arc
Shape sieve G undersized product enters tail coal filter press J；The heavy product of TBS sorting machine C is discharged from bottom discharge valve, is centrifuged by tail coal
It is used as tail coal product 5 after machine I dehydration, centrifuge centrifugate enters tail coal filter press J filters pressing, -0.5mm tail coal mud is obtained after dehydration
Product 6, filtrate is as recirculated water 7.
Claims (5)
1. a kind of method for separating of the coal oil feed coal enrichment based on aqueous medium sorting, it is characterised in that steps are as follows:
A. feed coal (1) is fed into classifying screen (A) and carries out 3mm classification, to obtain partial size greater than 3mm and partial size less than 3mm's
Two kinds of coal materials:
B. the coal material by partial size greater than 3mm feeds jigging machine (B) and sorts, the weight product layering in jigging machine (B)
Afterwards, light product feeds block cleaned coal product (2) and backwater on cleaned coal dewatering screen (D) dehydration output sieve by overflow weir, produces again
Object is discharged jigging machine (B) into tailings dewatering sieve (E) by way of sieving upper discharge and discharge of heavy mate rial through screen plate, and sieves in tailings dewatering
(E) upper tail coal product (3) and backwater, the backwater of cleaned coal dewatering screen (D) and tailings dewatering sieve (E) output are sieved in dehydration output in
Fishing hole (F) is fed respectively, and backwater is separated into recirculated water (7) and underflow in the way of sediment overflow by fishing hole (F), is followed
Ring water (7) is used for sorting link, and underflow pump squeezes into tail coal filter press (J) filters pressing；
C. the coal material by partial size less than 3mm is tangentially fed from the groove body upper end of TBS sorting machine (C), and partial size is less than 3mm's
Coal material does interference subsiding movement in TBS sorting machine (C) and realizes that wherein low-density grade light product is with overflow by density separation
Be discharged into sieve bend (G) screening of 0.5mm grade from TBS sorting machine (C), the high density grade heavy product of TBS sorting machine (C) from
Enter tail coal centrifuge (I) after the discharge of TBS sorting machine (C) bottom discharge valve, high density grade heavy product passes through tail coal centrifuge (I)
Tail coal product (5) and centrifuge centrifugate a are obtained after dehydration, by the on-the-sieve material after sieve bend (G) screening feed cleaned coal from
Scheming (H) dehydration obtains fine cleaned coal product (4) and centrifuge centrifugate b, centrifuge centrifugate b return to TBS sorting machine (C) circulation
It uses；
D. underflow, the centrifuge centrifugate a of tail coal centrifuge (I) and the undersized product of sieve bend (G) in fishing hole (F) are fed
Tail coal filter press (J) filters pressing, obtains the tail coal mud product (6) that partial size is less than 0.5mm after dehydration, filtrate is followed as recirculated water (7)
Ring uses.
2. the method for separating of the coal oil feed coal enrichment according to claim 1 based on aqueous medium sorting, feature exist
In: it is less than 1.45g/cm that the separating density of TBS sorting machine (C), which indicates its content by vitrinite,3Density level, proportion are
90%, wherein vitrinite's coal content is 57%, is greater than 1.45g/cm3Density level proportion is 10%, and wherein vitrinite's content is
57%。
3. the method for separating of the coal oil feed coal enrichment according to claim 1 based on aqueous medium sorting, feature exist
In: coal material proportion of the partial size greater than 3mm after TBS sorting machine (C) sorting is 93%, and vitrinite's content therein is
55%, coal material proportion of the partial size less than 3mm is 7%, and vitrinite's content therein is 30%.
4. the method for separating of the coal oil feed coal enrichment according to claim 1 based on aqueous medium sorting, feature exist
In: entire sorting process only uses aqueous medium, without adding dielectric film filter technique.
5. the method for separating of the coal oil feed coal enrichment according to claim 1 based on aqueous medium sorting, feature exist
In: tail coal mud product (6) of the partial size less than 0.5mm is not necessarily to flotation, directly as tail coal product.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910110663.1A CN109746116B (en) | 2019-02-12 | 2019-02-12 | Water medium separation-based coal-to-liquid raw material coal enrichment separation method |
| AU2019429000A AU2019429000B2 (en) | 2019-02-12 | 2019-04-22 | Concentration and separation method for raw coal of coal-to-liquid fuels on the basis of water medium separation |
| PCT/CN2019/083658 WO2020164187A1 (en) | 2019-02-12 | 2019-04-22 | Concentration and separation method for raw coal of coal-to-liquid fuels on the basis of water medium separation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910110663.1A CN109746116B (en) | 2019-02-12 | 2019-02-12 | Water medium separation-based coal-to-liquid raw material coal enrichment separation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109746116A true CN109746116A (en) | 2019-05-14 |
| CN109746116B CN109746116B (en) | 2020-06-09 |
Family
ID=66406522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910110663.1A Active CN109746116B (en) | 2019-02-12 | 2019-02-12 | Water medium separation-based coal-to-liquid raw material coal enrichment separation method |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN109746116B (en) |
| AU (1) | AU2019429000B2 (en) |
| WO (1) | WO2020164187A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113908975A (en) * | 2021-09-09 | 2022-01-11 | 华北科技学院(中国煤矿安全技术培训中心) | Dry-wet combined separation method for power coal |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113023937B (en) * | 2021-03-05 | 2023-05-09 | 唐山亿思特选煤科技有限公司 | Tail coal slime water treatment device and method for wet coal preparation plant |
| CN113458126A (en) * | 2021-07-30 | 2021-10-01 | 李晓慧 | Solid waste recycling equipment for coal gasification slag |
| CN113731619A (en) * | 2021-08-10 | 2021-12-03 | 新疆宝明矿业有限公司 | Oil shale raw ore sorting system and method |
| CN114226061A (en) * | 2021-12-24 | 2022-03-25 | 河南天成能源科技有限公司 | Mixed separation process of raw coal, middlings and coal slime below 3mm |
| 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 |
| CN115445320A (en) * | 2022-08-31 | 2022-12-09 | 晋能控股装备制造集团有限公司寺河煤矿 | Mine water underground treatment process |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4377473A (en) * | 1981-07-16 | 1983-03-22 | Atlantic Richfield Company | Method for concentrating the exinite group macerals from coal by froth flotation |
| CN102962122A (en) * | 2012-12-03 | 2013-03-13 | 中国矿业大学 | Deep preparation technology of coal for direct coal liquefacation |
| CN104263397A (en) * | 2014-09-17 | 2015-01-07 | 中国矿业大学(北京) | Process for full-particle-size sorting and enriching kerogen from oil shale |
| CN104258975A (en) * | 2014-09-30 | 2015-01-07 | 西安科技大学 | Electroflotation and separation method of coal rock maceral |
| CN105080701A (en) * | 2015-09-02 | 2015-11-25 | 中国矿业大学 | Separation method for roughing slime through teetered bed separator (TBS) and concentrating coarse slime difficult to separate through slime dense medium cyclone |
Family Cites Families (3)
| 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 |
| CN101474592A (en) * | 2009-01-15 | 2009-07-08 | 长沙有色冶金设计研究院 | Coarse-size separation technique |
| CN106179717B (en) * | 2016-07-22 | 2018-04-10 | 中煤科工集团唐山研究院有限公司 | A kind of full level of thermal coal is selected in simplified heavy medium sorting process |
-
2019
- 2019-02-12 CN CN201910110663.1A patent/CN109746116B/en active Active
- 2019-04-22 AU AU2019429000A patent/AU2019429000B2/en active Active
- 2019-04-22 WO PCT/CN2019/083658 patent/WO2020164187A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4377473A (en) * | 1981-07-16 | 1983-03-22 | Atlantic Richfield Company | Method for concentrating the exinite group macerals from coal by froth flotation |
| CN102962122A (en) * | 2012-12-03 | 2013-03-13 | 中国矿业大学 | Deep preparation technology of coal for direct coal liquefacation |
| CN104263397A (en) * | 2014-09-17 | 2015-01-07 | 中国矿业大学(北京) | Process for full-particle-size sorting and enriching kerogen from oil shale |
| CN104258975A (en) * | 2014-09-30 | 2015-01-07 | 西安科技大学 | Electroflotation and separation method of coal rock maceral |
| CN105080701A (en) * | 2015-09-02 | 2015-11-25 | 中国矿业大学 | Separation method for roughing slime through teetered bed separator (TBS) and concentrating coarse slime difficult to separate through slime dense medium cyclone |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113908975A (en) * | 2021-09-09 | 2022-01-11 | 华北科技学院(中国煤矿安全技术培训中心) | Dry-wet combined separation method for power coal |
| CN113908975B (en) * | 2021-09-09 | 2024-01-23 | 华北科技学院(中国煤矿安全技术培训中心) | Dry-wet combined sorting method for power coal |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020164187A1 (en) | 2020-08-20 |
| AU2019429000B2 (en) | 2021-11-25 |
| AU2019429000A1 (en) | 2020-11-19 |
| CN109746116B (en) | 2020-06-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109746116A (en) | The method for separating of coal oil feed coal enrichment based on aqueous medium sorting | |
| US11396024B2 (en) | Underground coal separation process | |
| CN103143432B (en) | Efficient crushing and three-section type screening method of coking coal gravity middings | |
| CN107008565A (en) | A kind of thermal coal deep screening and dense medium separation technique | |
| CN105772212B (en) | A kind of moderate cohesive coal produces extraordinary white cement coal method | |
| CN205797474U (en) | A kind of high ash coarse slime degree of depth fall ash system | |
| CN110523524B (en) | Simplified sorting process for full-grade sorting of anthracite | |
| CN102962122A (en) | Deep preparation technology of coal for direct coal liquefacation | |
| AU2021100676A4 (en) | Efficient desliming and separating method | |
| CN109225611B (en) | Coarse slime separating system and process of three-product liquid-solid fluidized bed | |
| CN111167594B (en) | Constant-low shunt-based non-pressure three-product and coal slime dense-medium separation improved process | |
| CN102728455A (en) | Combined separation process for gravity concentration and flotation of difficult separation coal slime with high intermediate density material content | |
| CN112371323A (en) | Combined separation process of pressurized two-product and pressurized three-product cyclones | |
| CN107008566B (en) | A kind of steam coal separation technique | |
| CN113145292A (en) | Grading and selecting method for multistage screening and powder removal of power coal | |
| CN111298954A (en) | Process for heavy-medium separation of oil shale from two pressurized products | |
| CN108855579B (en) | Coal dressing method by using aqueous medium cyclone | |
| CN109731674B (en) | Power coal separation method | |
| CN113908975B (en) | Dry-wet combined sorting method for power coal | |
| CN115646638A (en) | Gasification slag fine separation process | |
| CN109482493B (en) | Dry separation process for full-grain-size oil shale | |
| CN113600332A (en) | Fine-grained refractory coking coal separation system with high medium coal content | |
| CN111437986A (en) | Coal dressing process for on-line recovery of high-ash clean coal from medium coal | |
| CN218637595U (en) | System for efficiently utilizing coal slime easy to argillize, desliming and selecting coal slime | |
| CN114653474B (en) | Deep upgrading technology for slime water |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |