CN104263397B - A kind of resinous shale wholegrain level sorting enrichment oil matrix technique - Google Patents
A kind of resinous shale wholegrain level sorting enrichment oil matrix technique Download PDFInfo
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- CN104263397B CN104263397B CN201410471965.9A CN201410471965A CN104263397B CN 104263397 B CN104263397 B CN 104263397B CN 201410471965 A CN201410471965 A CN 201410471965A CN 104263397 B CN104263397 B CN 104263397B
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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
Abstract
A kind of resinous shale wholegrain level sorting enrichment oil matrix technique, by resinous shale crushing raw ore to being less than 70mm, 0.5mm sieve classification is carried out to product after fragmentation, gained+0.5mm on-the-sieve material carries out dense medium separation, obtain bulk rich oil matrix product and the oil-poor matrix product of bulk, undersize material carries out magnetic separation dielectric film filter, magnetic separation dielectric film filter mine tailing and screening-0.5mm undersize material carry out flotation sorting, be particulate rich oil matrix product after the flotation froth product filter dehydration that flotation sorting produces, the mine tailing of flotation sorting carries out thickening, produce the oil-poor matrix product of particulate, the filtrate of filter dehydration and the overflow of thickening become recirculated water.The resinous shale that the present invention is directed to wholegrain level carries out sorting, is effectively enriched the content of petrologen in bulk and particulate resinous shale, improves the oil yield of bulk resinous shale and the combustion heating value of particulate resinous shale, effectively reduces problem of environmental pollution.Its technique is simple, has practicality widely.
Description
Technical field
The invention belongs to oil shale industry field, be particularly useful for resinous shale wholegrain level sorting enrichment oil matrix technique, be used for removing part mineral substance in resinous shale, improve the content of petrologen in resinous shale wholegrain level.
Background technology
Resinous shale is a kind of unconventional petroleum resources, and China's oil shale resources reserves are very abundant, and it is 47,600,000,000 tons that storage capacity amounts to into shale oil geological resource reserves, and position is at the forefront in the world.Resinous shale is mainly used as generating and oil refining, is important the supplementing or substitute energy of oil.Resinous shale is made up of organic constituent, inorganic mineral and water, and organic constituent is petrologen, and content is less than 35% of total mass usually, and petrologen can obtain shale oil through low-temperature pyrolysis at about 500 DEG C, is processed into gasoline, diesel oil or as oil fuel further; Inorganic mineral content, more than 40%, is mainly quartz, clay mineral, carbonate minerals etc.
The density of petrologen is generally 1.0 ~ 1.8g/cm
3, the density of mineral substance is about 2.2g/cm
3, the density of resinous shale depends primarily on content and the density of wherein inorganic mineral, and generally, the density of resinous shale is larger, and oil length is lower.Petrologen is also known as kerogen, and be made up of C, H, O and a small amount of S, N element, the surface presentation hydrophobicity of petrologen particle, and mineral surfaces presents stronger wetting ability more, surface both physicochemical property are totally different.Dense medium separation and flotation sorting are carry out according to the density variation of raw material and Surface Physical Chemistry nature difference the method analyzed respectively, are all sorting working methods of the widespread use of mineral wealth manufacture field.
At present, the resinous shale Chemical Manufacture course of processing of China, after only passing through simple fragmentation, directly carries out chemical industry conversion or as fuel to resinous shale raw ore using product.And the inorganic mineral of content more than 40% utilizes in process in its destructive distillation or burning etc. and plays deleterious effect in resinous shale, greatly reduce purity and the trans-utilization rate of resinous shale reactor product, the calorific value that resinous shale directly burns is reduced because ash oontent is large, and easily produce more serious dust and sour gas, bring environmental pollution, have impact on the performance of resinous shale course of processing economic benefit and social benefit.
Summary of the invention
Technical problem: to the object of the invention is for height containing the processing and utilization of mineral oil shale, provides that a kind of method is simple, less investment, working cost are low, is easy to the resinous shale wholegrain level sorting enrichment oil matrix technique that realizes, mineral substance removal effect is good.
Technical scheme: the object of the present invention is achieved like this, this resinous shale wholegrain level sorting enrichment oil matrix processing step is as follows:
A. utilizing a kind of selective crushing equipment by resinous shale raw ore selective crushing to being less than 70mm, obtaining crushed product (1);
B. crushed product (1) is carried out 0.5mm sieve classification, obtain on-the-sieve material (2) granularity+0.5mm and undersize material (3) granularity-0.5mm two grade products;
C. the on-the-sieve material (2) of+0.5mm is carried out dense medium separation, obtain light product (4) and heavy product (5) two kinds of products, gained two kinds of dense medium separation products enter next step respectively;
D. the light product of step c gained (4) carries out light product de-mediated dehydration, obtain bulk rich oil matrix product and the rare medium of undersize material first (6), heavy product (5) carries out weight product de-mediated dehydration, obtain bulk oil-poor matrix product and the rare medium of undersize material second (7), first rare medium (6) and second rare medium (7) enter next step;
E. first rare medium (6) and second rare medium (7) are carried out magnetic separation dielectric film filter, reclaim the qualified medium obtained and return dense medium separation link round-robin, magnetic separation dielectric film filter mine tailing (8) enters next step;
F. magnetic separation dielectric film filter mine tailing (8) and the undersize material (3) of screening are carried out flotation sorting, the flotation sorting obtained produces flotation froth product (9) and flotation tailings (10) enters next step;
G. flotation froth product (9) is carried out filter dehydration, produce particulate rich oil matrix product and filtrate (11); Flotation tailings (10) is carried out thickening, and produce the oil-poor matrix product of particulate and overflow (12), filtrate (11) and overflow (12) become recirculated water;
H. the recirculated water of step g gained returns for dense medium separation and flotation sorting;
I. clear water is added to recirculated water;
J. medium is added to qualified medium.
Described resinous shale wholegrain fraction is elected as and is carried out 0.5mm classification by after resinous shale crushing raw ore, + 0.5mm material carries out gravitational segregation according to the density variation of petrologen and mineral substance,-0.5mm material carries out flotation sorting according to the Surface Physical Chemistry composition of petrologen and mineral substance and Surface Physical Chemistry nature difference, realizes the sorting of wholegrain level.
Described selective crushing equipment is hammer crusher, roll crusher or jaw crusher, is crushed to and is less than 70mm.
Described dense medium separation equipment is dense-medium cyclone, and dense medium separation density is determined according to product requirement, and scope is at 1.8-2.0g/cm
3between.
Described light product de-mediated dehydration by once or secondary de-mediated dewatering process form, completed by scalping screen, the sieve aperture of last one scalping screen is 0.5mm.
Beneficial effect: owing to have employed such scheme, the present invention by resinous shale raw ore selective crushing to being less than sieve classification after 70mm, screening gained+0.5mm on-the-sieve material carries out dense medium separation, dewater through product de-media, obtain the bulk rich oil matrix product after de-mediated dehydration and the oil-poor matrix product of bulk, undersize material carries out magnetic separation dielectric film filter, reclaim the qualified medium obtained and return dense medium separation link round-robin, magnetic separation dielectric film filter mine tailing and screening-0.5mm undersize material carry out flotation sorting, the product of flotation sorting is after filtration and thickening, obtain particulate rich oil matrix product and the oil-poor matrix product of particulate, the filtrate of filter dehydration and the overflow of thickening become recirculated water, recirculated water returns for dense medium separation and flotation sorting.The resinous shale that the present invention is directed to wholegrain level has carried out sorting, effectively be enriched the content of petrologen in bulk and particulate resinous shale, greatly reduce content of mineral substances, improve the oil yield of bulk resinous shale, and improve purity and the trans-utilization rate of resinous shale reactor product, improve the combustion heating value of particulate resinous shale on the other hand, reduce burning and utilize the dust and sour gas that produce in process, reduce environmental pollution, improve performance and the economic worth of oil shale oil-refining and burning utilization, improve economic benefit and the social benefit of the resinous shale course of processing.Its technique is simple, is easy to realize, and enrichment oil matrix is effective, and working cost is low, has practicality widely.
Accompanying drawing explanation
Fig. 1 is resinous shale wholegrain level sorting enrichment oil matrix process flow sheet of the present invention.
In figure: 1, crushed product; 2, on-the-sieve material; 3, undersize material; 4, light product; 5, heavy product; 6, first rare medium; 7, second rare medium; 8, magnetic separation dielectric film filter mine tailing; 9, flotation froth product; 10, flotation tailings; 11, filtrate; 12, overflow;
Embodiment
Below in conjunction with accompanying drawing, one embodiment of the present of invention are further described:
As shown in Figure 1, resinous shale wholegrain level sorting enrichment oil matrix technique of the present invention:
A. utilizing roll crusher by resinous shale raw ore selective crushing to being less than 70mm, obtaining crushed product 1;
B. crushed product 1 carries out 0.5mm linear vibrating screen sieve classification, obtains on-the-sieve material 2 granularity-70+0.5mm and undersize material 3 granularity-0.5mm two grade products;
The on-the-sieve material 2 of c.-70+0.5mm enters two product heavy-medium cyclones and carries out dense medium separation, and obtain light product 4 and heavy product 5 two kinds of products, gained two kinds of dense medium separation products enter next step respectively;
D. the light product of step c gained 4 enter arc scalping screen carry out light product de-mediated dehydration, obtain bulk rich oil matrix product and the rare medium 6 of undersize material first, heavy product 5 enters arc scalping screen and carries out weight product de-mediated dehydration, obtain bulk oil-poor matrix product and the rare medium 6 of the rare medium of undersize material second 7, first and second rare medium 7 and enter next step;
E. first rare medium 6 and second rare medium 7 enter magnetic separator and carry out magnetic separation dielectric film filter, and reclaim the qualified medium obtained and return dense medium separation link round-robin, magnetic separation dielectric film filter mine tailing 8 enters next step;
F. magnetic separation dielectric film filter mine tailing 8 enters subaeration flotation machine with the undersize material 3 of screening and carries out flotation sorting, and the flotation sorting obtained produces flotation froth product 9 and flotation tailings 10 enters next step;
G. flotation froth product 9 enters cleaned coal vacuum pressed filter and carries out filter dehydration, produces particulate rich oil matrix product and filtrate 11; Flotation tailings 10 enters deep cone thickener and carries out thickening, and produce the oil-poor matrix product of particulate and overflow 12, filtrate 11 and overflow 12 become recirculated water;
H. the recirculated water of step g gained returns for dense medium separation and flotation sorting;
I. clear water is added to recirculated water;
J. medium is added to qualified medium.
Described resinous shale wholegrain fraction is elected as and is carried out 0.5mm classification by after resinous shale crushing raw ore, + 0.5mm material carries out dense medium separation according to the density variation of petrologen and mineral substance,-0.5mm material carries out flotation sorting according to the Surface Physical Chemistry composition of petrologen and mineral substance and Surface Physical Chemistry nature difference, realizes the sorting of wholegrain level.Described selective crushing equipment can also be hammer crusher, roll crusher or jaw crusher, is crushed to and is less than 70mm.
Described dense medium separation equipment is dense-medium cyclone, and dense medium separation density is determined according to product requirement, and scope is at 1.8-2.0g/cm
3between.
Described light product de-mediated dehydration by once or secondary de-mediated dewatering process form, completed by scalping screen, the sieve aperture of last one scalping screen is 0.5mm.
For Jilin Huadian Oil Shale, this oil content of oil shale is about 8%, adopts roll crusher by resinous shale crushing raw ore to-70mm, the classification of employing 0.5mm sieve apparatus, the on-the-sieve material of-70+0.5mm enters dense-medium cyclone and carries out sorting, and separating density is 1.90g/cm
3, the heavy product of sorting gained two kinds of products and light product carry out de-mediated dehydration respectively by scalping screen, and the light product after de-mediated dehydration is bulk rich oil matrix product, and productive rate is about 43%, and oil length is about 14%; Heavy product after de-mediated dehydration is the oil-poor matrix product of bulk, and productive rate is about 49%, and oil length is about 2.5%.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 flotation machine and carry out flotation sorting, particulate rich oil matrix product is obtained after flotation froth product dehydrate, productive rate is about 3.5%, and oil length is about 15%; Be the oil-poor matrix product of particulate after flotation tailings product dehydrate, productive rate is about 4.5%, and oil length is about 2%, and the filtrate of filter dehydration and the overflow of thickening become recirculated water, and recirculated water returns for dense medium separation and flotation sorting.
Claims (5)
1. a resinous shale wholegrain level sorting enrichment oil matrix technique, is characterized in that, this resinous shale wholegrain level sorting enrichment oil matrix processing step is as follows:
A. utilizing a kind of selective crushing equipment by resinous shale raw ore selective crushing to being less than 70mm, obtaining crushed product (1);
B. crushed product (1) is carried out 0.5mm sieve classification, obtain on-the-sieve material (2) granularity+0.5mm and undersize material (3) granularity-0.5mm two grade products;
C. the on-the-sieve material (2) of+0.5mm is carried out dense medium separation, obtain light product (4) and heavy product (5) two kinds of products, gained two kinds of dense medium separation products enter next step respectively;
D. the light product of step c gained (4) carries out light product de-mediated dehydration, obtain bulk rich oil matrix product and the rare medium of undersize material first (6), heavy product (5) carries out weight product de-mediated dehydration, obtain bulk oil-poor matrix product and the rare medium of undersize material second (7), first rare medium (6) and second rare medium (7) enter next step;
E. first rare medium (6) and second rare medium (7) are carried out magnetic separation dielectric film filter, reclaim the qualified medium obtained and return dense medium separation link round-robin, magnetic separation dielectric film filter mine tailing (8) enters next step;
F. magnetic separation dielectric film filter mine tailing (8) and the undersize material (3) of screening are carried out flotation sorting, the flotation sorting obtained produces flotation froth product (9) and flotation tailings (10) enters next step;
G. flotation froth product (9) is carried out filter dehydration, produce particulate rich oil matrix product and filtrate (11); Flotation tailings (10) is carried out thickening, and produce the oil-poor matrix product of particulate and overflow (12), filtrate (11) and overflow (12) become recirculated water;
H. the recirculated water of step g gained returns for dense medium separation and flotation sorting;
I. clear water is added to recirculated water;
J. medium is added to qualified medium.
2. a kind of resinous shale wholegrain level sorting enrichment oil matrix technique according to claim 1, it is characterized in that: described wholegrain fraction is elected as and carried out 0.5mm classification by after resinous shale crushing raw ore, + 0.5mm material carries out dense medium separation according to the density variation of petrologen and mineral substance,-0.5mm material carries out flotation sorting according to the Surface Physical Chemistry composition of petrologen and mineral substance and Surface Physical Chemistry nature difference, realizes the sorting of wholegrain level.
3. a kind of resinous shale wholegrain level sorting enrichment oil matrix technique according to claim 1, is characterized in that: described selective crushing equipment is hammer crusher, roll crusher or jaw crusher, is crushed to and is less than 70mm.
4. a kind of resinous shale wholegrain level sorting enrichment oil matrix technique according to claim 1, is characterized in that: described dense medium separation equipment is dense-medium cyclone, and dense medium separation density is determined according to product requirement, and scope is at 1.8-2.0g/cm
3between.
5. a kind of resinous shale wholegrain level sorting enrichment oil matrix technique according to claim 1, is characterized in that: described light product de-mediated dehydration by once or secondary de-mediated dewatering process form, completed by scalping screen, the sieve aperture of last one scalping screen is 0.5mm.
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| CN105536980B (en) * | 2016-01-28 | 2017-12-08 | 北京国华科技集团有限公司 | A kind of oil shale high accuracy method for separating |
| CN108246493B (en) * | 2018-01-22 | 2020-07-31 | 西安科技大学 | Comprehensive utilization process for reducing oil shale ash content |
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| CN109046740A (en) * | 2018-07-11 | 2018-12-21 | 中国地质科学院郑州矿产综合利用研究所 | Method for separating low-grade uranium ores by dense medium cyclone |
| CN109365120A (en) * | 2018-11-23 | 2019-02-22 | 金石资源集团股份有限公司 | A kind of fluorite lump ore gravity separation technology and its system |
| CN109746116B (en) * | 2019-02-12 | 2020-06-09 | 中国矿业大学 | Water medium separation-based coal-to-liquid raw material coal enrichment separation method |
| CN111483084A (en) * | 2020-06-05 | 2020-08-04 | 广东省资源综合利用研究所 | Method for separating fine copper wire from plastic |
| CN111822153A (en) * | 2020-06-18 | 2020-10-27 | 重庆长能环境科技有限公司 | Collecting agent for recovering carbonaceous fuel from oil-based drill cuttings and preparation method thereof |
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| GB662794A (en) * | 1948-04-20 | 1951-12-12 | Stamicarbon | An improved process for the separation according to specific gravity of mixtures of particles differing in grain size and specific gravity |
| US4176042A (en) * | 1976-03-25 | 1979-11-27 | Boliden Aktiebolag | Method of treating shales |
| US4348274A (en) * | 1979-07-13 | 1982-09-07 | Exxon Research & Engineering Co. | Oil shale upgrading process |
| US4576708A (en) * | 1984-08-06 | 1986-03-18 | Cities Service Oil & Gas Corp. | Beneficiation of shale kerogen and its conversion into shale oil |
| US4963250A (en) * | 1989-11-09 | 1990-10-16 | Amoco Corporation | Kerogen agglomeration process for oil shale beneficiation using organic liquid in precommunication step |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20070012598A1 (en) * | 2000-01-24 | 2007-01-18 | Rendall John S | Supercritical hydroextraction of kerogen from oil shale ores |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB662794A (en) * | 1948-04-20 | 1951-12-12 | Stamicarbon | An improved process for the separation according to specific gravity of mixtures of particles differing in grain size and specific gravity |
| US4176042A (en) * | 1976-03-25 | 1979-11-27 | Boliden Aktiebolag | Method of treating shales |
| US4348274A (en) * | 1979-07-13 | 1982-09-07 | Exxon Research & Engineering Co. | Oil shale upgrading process |
| US4576708A (en) * | 1984-08-06 | 1986-03-18 | Cities Service Oil & Gas Corp. | Beneficiation of shale kerogen and its conversion into shale oil |
| US4963250A (en) * | 1989-11-09 | 1990-10-16 | Amoco Corporation | Kerogen agglomeration process for oil shale beneficiation using organic liquid in precommunication step |
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