CN105665125A - Device and method for concentrating kerogen from easily-slimed oil shale - Google Patents
Device and method for concentrating kerogen from easily-slimed oil shale Download PDFInfo
- Publication number
- CN105665125A CN105665125A CN201610170407.8A CN201610170407A CN105665125A CN 105665125 A CN105665125 A CN 105665125A CN 201610170407 A CN201610170407 A CN 201610170407A CN 105665125 A CN105665125 A CN 105665125A
- Authority
- CN
- China
- Prior art keywords
- argillization
- oil shale
- pipeline
- product
- thickener
- 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.)
- Pending
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
- B03B9/00—General arrangement of separating plant, e.g. flow sheets
- B03B9/02—General arrangement of separating plant, e.g. flow sheets specially adapted for oil-sand, oil-chalk, oil-shales, ozokerite, bitumen, or the like
-
- 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
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Geology (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The invention discloses a device and method for concentrating kerogen from easily-slimed oil shale. The device comprises a crusher, a sliming device, a vibrating screen, a mixing barrel, a feeding pump, a heavy medium separating device, a light product medium removing and dewatering screen, a heavy product medium removing and dewatering screen, a magnetic separator, a qualified medium barrel, a medium supplementing barrel, a centrifugal machine and a thickener. Oil shale is crushed through the crusher and then enters the sliming device; the slimed oil shale enters the vibrating screen to be classified; materials on the screen enter the heavy medium separating device; obtained products are subjected to medium removing and dewatering, and large blocks of kerogen-rich products and large blocks of kerogen-poor products are obtained; heavy media are recycled and reused through the magnetic separator; materials under the screen and tailings of the magnetic separator are subjected to dewatering of the centrifugal machine and the thickener, and high-slime-content fine-grain kerogen tailings are obtained; and overflow of the thickener becomes circulating water, and the circulating water returns to the heavy media to be separated. The device and method are suitable for separating of easily-slimed oil shale, the washing precision and a kerogen concentration effect can be improved, the tailing water treatment link is simple, and the device and the method are easy to achieve and have high practicability.
Description
Technical field
The invention belongs to oil shale industry field, especially a kind of method sorting enrichment oil matrix suitable in easy argillization oil shale, it is used for removing part mineral in oil shale, improves the content of kerogen in oil shale wholegrain level.
Background technology
The kerogen of oil shale can prepare shale oil through low temperature distillation at about 500 DEG C, is further processed into gasoline, diesel oil or as fuel oil. The density of kerogen is generally 1.0 ~ 1.8g/cm3, the density of mineral is about 2.2g/cm3, the density of oil shale depends primarily on content and the density of wherein inorganic mineral, and generally, the density of oil shale is more big, and oil content is more low. It addition, oil shale mineral is mainly the clay class mineral such as kaolinite, montmorillonite, illite, hydromica, this kind of mineral meet the easy argillization of water electrode. Oil shale is made up of organic component, inorganic mineral and water, organic component is kerogen, content is typically smaller than the 35% of gross mass, washing is carried out as medium according to traditional water, very easily causing washing wastewater big, tailing water intractability is big, and production cycle water viscosity increases rapidly, affect sharpness of separation, make the recovery of particulate oil shale, wash water purify and closed cycle becomes very difficult. At present, the oil shale Chemical Manufacture course of processing of China, oil shale raw ore is only passed through simple broken after, product is made directly chemical industry and converts or as fuel. And inorganic mineral utilizes in its dry distilling or burning etc. and plays illeffects in process, greatly reduce purity and the trans-utilization rate of oil shale reactor product, have impact on the performance of oil shale course of processing economic benefit and social benefit.
Summary of the invention
Technical problem: it is an object of the invention to for the height processing and utilization containing easy argillization mineral oil shale, it is provided that a kind of method is simple, small investment, operating cost are low, be easily achieved, easy argillization oil shale enrichment oil matrix method that mineral removal effect is good.
Technical scheme: the object of the present invention is achieved like this, a kind of easily argillization oil shale enrichment oil matrix device, is characterized in that: it includes disintegrating machine, argillization equipment, vibrosieve, mixing tank, feed pump, dense medium separation equipment, light product de-mediated dewatering screen, weight product de-mediated dewatering screen, magnetic separator, qualified medium bucket, adds medium bucket, centrifuge, thickener, adhesive tape conveyor, pipeline, chute; Wherein: the delivery outlet of disintegrating machine is connected with the input port of argillization equipment by adhesive tape conveyor, the delivery outlet of argillization equipment is provided with vibrosieve, the siftage of vibrosieve is connected with the input port of centrifuge by pipeline, the oversize of vibrosieve is connected with the input port of mixing tank by chute, mixing tank connects feed pump by pipeline, feed pump connects the input port of dense medium separation equipment by pipeline, and the light product delivery outlet of dense medium separation equipment is connected to light product de-mediated dewatering screen and weight product de-mediated dewatering screen with weight product delivery outlet respectively through chute; The siftage of light product de-mediated dewatering screen and weight product de-mediated dewatering screen is connected with the input port of magnetic separator by pipeline, the concentrate delivery outlet of magnetic separator connects qualified medium bucket by pipeline, qualified medium bucket piping connects dense medium separation equipment, adds medium bucket and connects qualified medium bucket by pipeline; The mine tailing delivery outlet of magnetic separator connects the input port of centrifuge by pipeline, and the underflow that the overfall of centrifuge connects thickener, centrifuge and thickener by pipeline is exported by adhesive tape conveyor, and the overflow of thickener returns dense medium separation by pipeline.
Described easy argillization oil shale enrichment oil matrix method be oil shale raw ore after crusher in crushing, enter argillization equipment carry out argillization.After argillization, product enters bolting, after oversize enters mixing tank, squeezed into dense medium separation equipment by feed pump to sort, the de-mediated dehydration respectively through de-mediated dewatering screen of the sorting light product of gained and weight product, obtaining bulk rich oil matrix product and the lean kerogen product of bulk, the siftage of de-mediated dewatering screen enters magnetic separator and reclaims dense media. The concentrate of magnetic separator enters qualified medium bucket, can pass through to add medium bucket and add medium to qualified medium bucket. The siftage of vibrosieve and the mine tailing of magnetic separator enter centrifuge, and the centrifugal filtrate of centrifuge enters thickener, and the underflow of centrifuge and thickener becomes the high particulate oil shale mine tailing containing mud, and thickener overflow becomes recirculated water.
Described easy argillization oil shale enrichment oil matrix method is for the oil shale easy argillization of mineral own, the character of kerogen not easily argillization, before washing, first the mineral in raw ore is carried out argillization, the height the formed direct centrifugal concentrating dehydration of mine tailing containing mud, raw ore after argillization enters the sorting of dense medium separation equipment, produces bulk rich oil matrix product, the lean kerogen product of bulk and the height particulate oil shale mine tailing containing mud.
Beneficial effect: owing to have employed such scheme, for the oil shale easy argillization of mineral own, the character of kerogen not easily argillization, before washing, first the mineral in raw ore is carried out argillization, the height the formed direct centrifugal concentrating dehydration of mine tailing containing mud, raw ore after argillization enters the sorting of dense medium separation equipment, it is made to be preferably minimized by the impact of argillization mineral, washing precision improves, and tailing water processing links is simple, effectively it is enriched in bulk and particulate oil shale the content of kerogen, greatly reduce content of mineral substances, improve the oil yield of bulk oil shale and the combustion heating value of particulate oil shale, improve performance and the economic worth of oil shale oil-refining and burning utilization, effectively reduce problem of environmental pollution. its simple in construction, it is easy to accomplish, enrichment oil matrix is effective, and operating cost is low, has wide applicability.
Accompanying drawing explanation
Fig. 1 is the present invention easy argillization oil shale enrichment oil matrix equipment contact figure.
In figure: 1, disintegrating machine; 2, argillization equipment; 3, vibrosieve; 4, mixing tank 5, feed pump 6, dense medium separation equipment; 7, light product de-mediated dewatering screen; 8, weight product de-mediated dewatering screen; 9, magnetic separator; 10, qualified medium bucket; 11, medium bucket is added; 12, centrifuge; 13, thickener; 1/1, the first adhesive tape conveyor; 3/1, the first chute; 3/2, the first pipeline; 4/1, second pipe; 5/1, the 3rd pipeline; 6/1, the second chute; 6/2, the 3rd chute; 7/1, the 4th pipeline; 8/1, the 5th pipeline; 9/1, the 6th pipeline; 9/2, the 7th pipeline; 10/1, the 8th pipeline; 11/1, the 11st pipeline; 12/1, the second adhesive tape conveyor; 12/2, the 9th pipeline; 13/1, the 3rd adhesive tape conveyor; 13/2, the tenth pipeline; 14, oil shale raw ore; 15, bulk rich oil matrix product; 16, the lean kerogen product of bulk; 17, particulate oil shale mine tailing; 18, recirculated water.
Detailed description of the invention
Below in conjunction with accompanying drawing, one embodiment of the present of invention is further described:
As shown in Figure 1, the present invention easy argillization oil shale enrichment oil matrix device, mainly by disintegrating machine 1, argillization equipment 2, vibrosieve 3, mixing tank 4, feed pump 5, dense medium separation equipment 6, light product de-mediated dewatering screen 7, weight product de-mediated dewatering screen 8, magnetic separator 9, qualified medium bucket 10, add medium bucket 11, centrifuge 12, thickener 13;The delivery outlet of disintegrating machine 1 is connected with the input port of argillization equipment 2 by adhesive tape conveyor, and the delivery outlet of argillization equipment has vibrosieve 3, and the lower outlet of sieve is connected by the entrance of pipeline with centrifuge 12, and sieve upper outlet is connected with mixing tank 4 by chute. Mixing tank 4 is connected by pipeline with feed pump 5, and feed pump 5 is linked together by pipeline and dense medium separation equipment 6. The light product delivery outlet of dense medium separation equipment 6 is connected respectively to light product de-mediated dewatering screen 7 and weight product de-mediated dewatering screen 8 with weight product delivery outlet by chute. Light product de-mediated dewatering screen 7 is connected with magnetic separator 9 by pipeline with weight product de-mediated dewatering screen 8, the concentrate delivery outlet of magnetic separator 9 connects qualified medium bucket 10 by pipeline, qualified medium bucket 10 piping is connected with dense medium separation equipment 6, adds medium bucket 11 and is connected with qualified medium bucket 10 further through pipeline. The mine tailing delivery outlet of magnetic separator 9 connects the input port of centrifuge 12 by pipeline, and the overfall of centrifuge 12 is connected with thickener 13 by pipeline. Centrifuge 12 is connected adhesive tape conveyor with the underflow of thickener 13, jointly becomes the high particulate oil shale mine tailing 17 containing mud, and thickener overflow returns dense medium separation as recirculated water 18 by pipeline.
Described easy argillization oil shale enrichment oil matrix method is that oil shale raw ore 14 first passes through the broken of disintegrating machine 1, enters argillization equipment 2 by the first adhesive tape conveyor 1/1, the mineral of easy argillization are carried out argillization. After argillization, product entrance vibrosieve 3 is sieved, and siftage enters centrifuge 12 by the first pipeline 3/2, and oversize enters mixing tank 4 by the first chute 3/1. Material in mixing tank 4 feeds in feed pump 5 by second pipe 4/1, feed dense medium separation equipment 6 again through 5/1 material of the 3rd pipeline to sort, after sorting, light product and weight product feed light product de-mediated dewatering screen 7 and weight product de-mediated dewatering screen 8 respectively through the second chute 6/1 and the 3rd chute 6/2, carry out de-mediated dehydration. Their oversize respectively obtains bulk rich oil matrix product 15 and the lean kerogen product 16 of bulk, and siftage enters magnetic separator 9 respectively through the 4th pipeline 7/1 and the 5th pipeline 8/1, carries out the utilization and recycle of dense media. The concentrate of magnetic separator 9 feeds qualified medium bucket 10 by the 6th pipeline 9/1, and qualified medium joins in dense medium separation equipment 6 by the 8th pipeline 10/1, adds medium bucket 11 and adds medium by the 11st pipeline 11/1 to qualified medium bucket 10. The mine tailing of magnetic separator 9 feeds centrifuge 12 by the 7th pipeline 9/2, the centrifugal filtrate of centrifuge 12 enters thickener 13 by the 9th pipeline 12/2, the underflow of centrifuge 12 and thickener 13 is carried respectively through the second adhesive tape conveyor 12/1 and the 3rd adhesive tape conveyor 13/1, jointly become the high particulate oil shale mine tailing 17 containing mud, thickener overflow becomes recirculated water 18, returns dense medium separation by the tenth pipeline 13/2.
Described easy argillization oil shale enrichment oil matrix method is for the oil shale easy argillization of mineral own, the character of kerogen not easily argillization, before washing, first the mineral in oil shale raw ore 14 is carried out argillization, the height the formed direct centrifugal concentrating dehydration of mine tailing containing mud, raw ore after argillization enters dense medium separation equipment 6 and sorts, and produces bulk rich oil matrix product 15, the lean kerogen product 16 of bulk and the height particulate oil shale mine tailing 17 containing mud.
For Jilin Huadian Oil Shale, this oil content of oil shale is about 8%, adopt double-roll crusher by oil shale crushing raw ore to-80mm, after adopting rotating cylinder to carry out argillization, utilize 0.5mm screening machine classification, the on-the-sieve material of-80+0.5mm enters heavy medium cyclone and sorts, and separating density is 1.90g/cm3Two kinds of product weight products of sorting gained and light product carry out de-mediated dehydration respectively through sculping screen, light product after de-mediated dehydration is bulk rich oil matrix product, productivity is about 44.17%, oil content is 15%, and the heavy product after de-mediated dehydration is the lean kerogen product of bulk, and productivity is 55%, oil content is about 2.5%, and ash is 80%;And utilize magnetic separator to carry out dielectric film filter, qualified medium returns dense medium separation round-robin, the undersize material of screening gained-0.5mm and magnetic tailing enter centrifuge and carry out dehydration, Centrifuge filtrate enters thickener clarification dehydration, and centrifuge dehydration material and thickener underflow become the high particulate oil shale mine tailing containing mud, and productivity is 5%, oil content is about 2.5%, ash is 80%, and the overflow of thickening becomes recirculated water, and recirculated water returns dense medium separation sorting.
Claims (3)
1. an easy argillization oil shale enrichment oil matrix device, is characterized in that: it includes disintegrating machine, argillization equipment, vibrosieve, mixing tank, feed pump, dense medium separation equipment, light product de-mediated dewatering screen, weight product de-mediated dewatering screen, magnetic separator, qualified medium bucket, adds medium bucket, centrifuge, thickener, adhesive tape conveyor, pipeline, chute; Wherein: the delivery outlet of disintegrating machine is connected with the input port of argillization equipment by adhesive tape conveyor, the delivery outlet of argillization equipment is provided with vibrosieve, the siftage of vibrosieve is connected with the input port of centrifuge by pipeline, the oversize of vibrosieve is connected with the input port of mixing tank by chute, mixing tank connects feed pump by pipeline, feed pump connects the input port of dense medium separation equipment by pipeline, and the light product delivery outlet of dense medium separation equipment is connected to light product de-mediated dewatering screen and weight product de-mediated dewatering screen with weight product delivery outlet respectively through chute; The siftage of light product de-mediated dewatering screen and weight product de-mediated dewatering screen is connected with the input port of magnetic separator by pipeline, the concentrate delivery outlet of magnetic separator connects qualified medium bucket by pipeline, qualified medium bucket piping connects dense medium separation equipment, adds medium bucket and connects qualified medium bucket by pipeline; The mine tailing delivery outlet of magnetic separator connects the input port of centrifuge by pipeline, and the underflow that the overfall of centrifuge connects thickener, centrifuge and thickener by pipeline is exported by adhesive tape conveyor, and the overflow of thickener returns dense medium separation by pipeline.
2. use the easy argillization oil shale enrichment oil matrix method of device described in claim 1, it is characterized in that: oil shale raw ore is after crusher in crushing, enter argillization equipment and carry out argillization, after argillization, product enters bolting, after oversize enters mixing tank, squeezed into dense medium separation equipment by feed pump to sort, the de-mediated dehydration respectively through de-mediated dewatering screen of the sorting light product of gained and weight product, obtain bulk rich oil matrix product and the lean kerogen product of bulk, the siftage of de-mediated dewatering screen enters magnetic separator and reclaims dense media, the concentrate of magnetic separator enters qualified medium bucket, can pass through to add medium bucket and add medium to qualified medium bucket, the siftage of vibrosieve and the mine tailing of magnetic separator enter centrifuge, the centrifugal filtrate of centrifuge enters thickener, the underflow of centrifuge and thickener becomes the high particulate oil shale mine tailing containing mud, thickener overflow becomes recirculated water.
3. easy argillization oil shale enrichment oil matrix method according to claim 2, it is characterized in that: described easy argillization oil shale enrichment oil matrix method is for the oil shale easy argillization of mineral own, the character of kerogen not easily argillization, before washing, first the mineral in raw ore is carried out argillization, the height the formed direct centrifugal concentrating dehydration of mine tailing containing mud, raw ore after argillization enters the sorting of dense medium separation equipment, produces bulk rich oil matrix product, the lean kerogen product of bulk and the height particulate oil shale mine tailing containing mud.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610170407.8A CN105665125A (en) | 2016-03-23 | 2016-03-23 | Device and method for concentrating kerogen from easily-slimed oil shale |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610170407.8A CN105665125A (en) | 2016-03-23 | 2016-03-23 | Device and method for concentrating kerogen from easily-slimed oil shale |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105665125A true CN105665125A (en) | 2016-06-15 |
Family
ID=56311601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610170407.8A Pending CN105665125A (en) | 2016-03-23 | 2016-03-23 | Device and method for concentrating kerogen from easily-slimed oil shale |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105665125A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111298959A (en) * | 2020-03-04 | 2020-06-19 | 中国矿业大学 | Process for separating oil shale through pressureless three-product heavy medium |
| CN111298954A (en) * | 2020-03-04 | 2020-06-19 | 中国矿业大学 | Process for heavy-medium separation of oil shale from two pressurized products |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100072110A1 (en) * | 2008-09-23 | 2010-03-25 | Thomas Gradek | Hydrocarbon extraction by oleophilic beads from aqueous mixtures |
| CN102553708A (en) * | 2012-01-19 | 2012-07-11 | 中国矿业大学 | Process for washing and selecting high-ash, high-water easily-argillized lignite |
| US20140020572A1 (en) * | 2005-04-29 | 2014-01-23 | Robert R. French | Method to Transform Bulk Material |
| CN104194814A (en) * | 2014-09-19 | 2014-12-10 | 中国矿业大学(北京) | Oil shale primary gangue discharging and distillation process |
| CN104226465A (en) * | 2014-09-17 | 2014-12-24 | 中国矿业大学(北京) | Gravity separation and kerogen enrichment technology of oil shale |
| 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 |
| CN105327772A (en) * | 2015-12-08 | 2016-02-17 | 中国地质科学院郑州矿产综合利用研究所 | Pre-desliming beneficiation method for fine-grain embedded molybdenum ore |
| CN205518173U (en) * | 2016-03-23 | 2016-08-31 | 北京科技大学 | Easy argillization oil shale enrichment kerogen device |
-
2016
- 2016-03-23 CN CN201610170407.8A patent/CN105665125A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140020572A1 (en) * | 2005-04-29 | 2014-01-23 | Robert R. French | Method to Transform Bulk Material |
| US20100072110A1 (en) * | 2008-09-23 | 2010-03-25 | Thomas Gradek | Hydrocarbon extraction by oleophilic beads from aqueous mixtures |
| CN102553708A (en) * | 2012-01-19 | 2012-07-11 | 中国矿业大学 | Process for washing and selecting high-ash, high-water easily-argillized lignite |
| CN104226465A (en) * | 2014-09-17 | 2014-12-24 | 中国矿业大学(北京) | Gravity separation and kerogen enrichment technology of oil shale |
| CN104194814A (en) * | 2014-09-19 | 2014-12-10 | 中国矿业大学(北京) | Oil shale primary gangue discharging and distillation process |
| 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 |
| CN105327772A (en) * | 2015-12-08 | 2016-02-17 | 中国地质科学院郑州矿产综合利用研究所 | Pre-desliming beneficiation method for fine-grain embedded molybdenum ore |
| CN205518173U (en) * | 2016-03-23 | 2016-08-31 | 北京科技大学 | Easy argillization oil shale enrichment kerogen device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111298959A (en) * | 2020-03-04 | 2020-06-19 | 中国矿业大学 | Process for separating oil shale through pressureless three-product heavy medium |
| CN111298954A (en) * | 2020-03-04 | 2020-06-19 | 中国矿业大学 | Process for heavy-medium separation of oil shale from two pressurized products |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101602029B (en) | Process for selecting cleaned coals from gangue coals of raw coals and middling coals | |
| WO2020181618A1 (en) | Underground coal preparation process | |
| CN102744146B (en) | Ore-dressing method for low-grade bauxite | |
| CN102717451A (en) | Recycling treatment method and equipment of waste plastic | |
| CN102962122A (en) | Deep preparation technology of coal for direct coal liquefacation | |
| CN104226465A (en) | Gravity separation and kerogen enrichment technology of oil shale | |
| CN106179717A (en) | A kind of full level of thermal coal is selected in simplified heavy medium sorting process | |
| CN105381866B (en) | Iron, the beneficiation method of carbon are extracted from furnace cloth bag dust-removing ash | |
| CN104263397A (en) | Process for full-particle-size sorting and enriching kerogen from oil shale | |
| CN110560258B (en) | Device and process for selecting ultra-clean coal by physical cyclone recovery jigging overflow coal slime | |
| CN103639077A (en) | Middings magnetic separator tailings classifying separation recovery system and middings magnetic separatortailings classifying separation recovery technology for dense medium coal preparation plant | |
| CN110560254B (en) | Separation process for reducing sulfur and ash in coal | |
| CN104984819B (en) | A kind of oil shale end ore deposit ore-dressing technique | |
| CN203635312U (en) | Mineral tailings grading and separating recovery system for middings magnetic separator in dense medium coal preparation plant | |
| CN111298954A (en) | Process for heavy-medium separation of oil shale from two pressurized products | |
| CN103920582A (en) | Closed-path grading technology suitable for fine pea coal grading | |
| CN105642431B (en) | Method for gravity separation of sulfur concentrate from sulfur-containing coal gangue | |
| CN104194814A (en) | Oil shale primary gangue discharging and distillation process | |
| CN105665125A (en) | Device and method for concentrating kerogen from easily-slimed oil shale | |
| CN109201315B (en) | Coal washing process capable of improving utilization rate | |
| CN214021353U (en) | Gravity-flotation combined separation system for refractory fluorite ores | |
| CN108855579B (en) | Coal dressing method by using aqueous medium cyclone | |
| CN104174861A (en) | Comprehensive recycling process of second zinc oxide rotary kiln tailings and production line of comprehensive recycling process | |
| CN212237720U (en) | Argillization waste rock water thick liquids sediment system of arranging among gangue resourceful treatment | |
| CN111298959A (en) | Process for separating oil shale through pressureless three-product heavy medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160615 |