CN106362856B - A kind of oil shale beneficiation method - Google Patents
A kind of oil shale beneficiation method Download PDFInfo
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- CN106362856B CN106362856B CN201510434898.8A CN201510434898A CN106362856B CN 106362856 B CN106362856 B CN 106362856B CN 201510434898 A CN201510434898 A CN 201510434898A CN 106362856 B CN106362856 B CN 106362856B
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Abstract
A kind of oil shale beneficiation method, belongs to oil shale industry field, is particularly suitable for oil shale processing and utilization industry.The oil shale raw ore of particle size range 0-300mm is sieved, product (> 50-80mm), which mix after being crushed with undersized product (< 50-80mm), on sieve carries out adding moisture grade, classification gained fine product (1-4mm) obtains thin concentrate product and thin product from failing by sorting and dehydration, classification gained coarse product (+1-4mm) obtains spoil by three product selectings, chats product and concentrate, wherein concentrate obtains final coarse-grain coarse ore concentrate product and block concentrate product using further Dewatering, the water that all dehydrations are discharged carries out concentrating clarifying, sediment obtains mud mineral products through filters pressing, primary water and filtrate as recirculated water carry out using.The present invention carries out after oil shale is broken plus moisture grade, coarse grain mineral and fine mineral sort respectively, solve the problems, such as that the previous efficiency of separation is low, effectively increase the concentrate yield of oil shale, has higher economic value.
Description
Technical field
The invention belongs to oil shale industry fields, are particularly suitable for a kind of oil shale ore dressing of oil shale processing and utilization industry
Method.
Background technique
Oil shale belongs to unconventional petroleum resources, and it is non-to be listed in 21 century with resourceful and development and utilization feasibilities
Often important takes over the energy, it is all non-renewable fossil energy as petroleum, natural gas, coal.Oil shale is dry through low temperature
Available shale oil is evaporated, like crude oil gasoline, diesel oil can be made or as fuel oil in shale oils.In Waste Era of Oil, have
It is active to the development and utilization of oil shale to close country.Oil Shale Resources in China rich reserves, also produce in progress of coal mining
A large amount of oil shales are given birth to, development and utilization oil shale can not only alleviate contradiction between oil supply and demand, can also solve because discarding oil shale
Caused by environmental problem, improve resource utilization.
Currently, the oil shale Chemical Manufacture in China is processed, only to oil shale raw ore by simple crushing and screening to one
Determine grade (common is 10-80mm), product is directly subjected to chemical industry conversion.China State Intellectual Property Office on September 19th, 2014
A kind of disclosed Publication No. CN104194814A contained oil shale preselects discharge refuse -- distillation process, discloses a kind of simple
Two product jigging sorting method of oil shale, but pass through a large amount of industrial experiment in practice, it was demonstrated that this method cannot be to oil shale
It is effectively sorted, be there is no separating effect in more situations, due to oil shale specific gravity closely Rock Specific Gravity, and the specific gravity of separation
All in 2.5 gram per centimeters3More than, conventional Coal Jigging Technique cannot be used, and oil shale, which sorts industry, also to be implemented without jigging sorting process
Precedent, therefore how to improve oil shale jigging sorting process effect, becomes industry problems, by many experiments the invention proposes
A kind of end block separates, the combined sorting new method of two technology of two-way.
Summary of the invention
The purpose of the present invention is being directed to the processing and utilization of oil shale, provide it is a kind of simple, efficiently, oily page can be significantly improved
Rock concentrate yield obtains higher concentrate yield for removing the inorganic mineral in oil shale, generates bigger economic benefit
Oil shale beneficiation method.
The object of the present invention is achieved like this, and steps are as follows for the oil shale beneficiation method:
A. the oil shale raw ore that granularity is 0-300mm is subjected to 50-80mm screening, generates screenings-(50-80) mm and sieve
Upper object+(50-80) mm；
B. oversize with crusher be crushed to granularity less than 80mm or be less than 50mm or 50-80mm become material, and with sieve
Lower object mixing；
C. mixed material adds water spray to carry out 1-4mm classification, and two kinds of materials are generated after classification, i.e. granularity is-(1-4) mm
Fine and granularity be+(1-4) mm coarse-grained material；
D. by sorting generation heavy product and light product, heavy product becomes particulate after dewatering screen is dehydrated for fine and water
Product from failing, light product become fine concentrate product after dewatering screen is dehydrated；
E. coarse-grained material carries out three product selectings and generates heavy product, light product and intermediate product, and heavy product is directly as cash
Stone product, as chats product, light product continues classification and generates two kinds of grade materials intermediate product: and granularity is-and (10-20) mm is thick
Granule materials and granularity are+(10-20) mm block material；
F. coarse-grained material is dehydrated into coarse-grain coarse ore concentrate product by dewatering screen, and block material is dehydrated into block essence by dewatering screen
Mineral products；
G. the backwater of dehydration d and the obtained dewatering screen of dehydration f collects carry out concentrating clarifying, generates
Primary water and enriched product；
H. enriched product becomes mud mineral products by filters pressing, and filtrate and primary water are continued to use collectively as recirculated water.
The granularity be-(1-4) mm fine beneficiation method be hydrocyclone sort or its equivalent screening installation.
The granularity be+(1-4) mm coarse-grained material beneficiation method be three product jiggings sort or its equivalent screening installation.
The granularity is+(10-20) mm block material may also pass through dry becomes block concentrate product.
Using above-mentioned beneficiation method, the present invention can largely improve the oil content of oil shale concentrate, can effectively improve spoil
Ash content increases jigging machine unit area treating capacity, reduces sorting cost, is a kind of completely new oil shale method for separating.This method
The resource utilization for also adding oil shale increases the economic benefit of enterprise, meets sustainable development and energy-saving and environment-friendly wants
It asks, there is wide applicability.
Detailed description of the invention
Fig. 1 is a kind of process flow chart of oil shale beneficiation method of the present invention.
In figure: 1. screenings；2. oversize；3. material；4. fine；5. coarse-grained material；6. heavy product；7. light produce
Object；8. backwater；9. fine tailings product；10. backwater；11. fine concentrate product；12. heavy product；13. intermediate product；
14. light product；15. coarse granular material；16. block material；17. backwater；18. coarse-grain coarse ore concentrate product；19. backwater；20. piece essence
Mineral products；21. primary water；22. enriched product；23. filtrate；24. mud mineral products.
Specific embodiment
One embodiment of the present of invention is further described below in conjunction with attached drawing:
As shown in Figure 1, a kind of oil shale beneficiation method technique of the present invention:
A. the oil shale raw ore that granularity is (0-300mm) is subjected to 50-80mm screening, generates (- (50-80) of screenings 1
) and oversize 2 (+(50-80) mm) mm；
B. oversize 2 with crusher be crushed to less than 80mm or be less than 50mm or 50-80mm become material 3, and under sieve
Object 1 mixes；
C. mixed material adds water spray to carry out 1-4mm classification, and two kinds of materials are generated after classification, and granularity is-(1-4) mm
Fine 4 and granularity are+(1-4) mm coarse-grained material 5；
D. fine 4 and water generate heavy product 6 and light product 7, heavy product 6 by sorting becomes after dewatering screen is dehydrated
Fine tailings product 9, light product 7 become fine concentrate product 11 after dewatering screen is dehydrated；
E. coarse-grained material 5 carries out three product selectings and generates heavy product 12, light product 14 and intermediate product 13, and heavy product 12 is straight
It connects as spoil product, intermediate product 13 is used as chats product, and light product 14 continues classification and generates two kinds of grade materials: granularity
It is+(10-20) mm block material 16 for-(10-20) mm coarse granular material 15 and granularity；
F. coarse granular material 15 is dehydrated into coarse-grain coarse ore concentrate product 18 by dewatering screen, and block material 16 is dehydrated by dewatering screen
As block concentrate product 20；
G. it is dense to collect carry out for the backwater 8,10,17,19 of dehydration d and the obtained dewatering screen of dehydration f
Contracting clarification, generates primary water 21 and enriched product 22；
H. enriched product 22 becomes mud mineral products 24, filtrate 23 and primary water 21 by filters pressing and continues collectively as recirculated water
It uses.
Granularity of the present invention be -4 beneficiation method of (1-4) mm fine be hydrocyclone sort or its equivalent sorting
Equipment.
Granularity of the present invention be+5 beneficiation method of (1-4) mm coarse-grained material be three product jigging machines sort or its equivalent point
Optional equipment.
Granularity of the present invention is+(10-20) mm block material 16 may also pass through dry becomes block concentrate product 20.
Though the present invention lists less embodiment, the related technical personnel of this field certain change to what the present invention was done
Type, improvement, replacement etc. or the embodiment above make any combination variation, within the scope of the present invention.
Claims (6)
1. a kind of oil shale ore-dressing technique, it is characterised in that include the following steps:
A. particle size range is subjected to 50-80mm screening, generation-(50-80) mm screenings in 0-300mm oil shale raw ore first
(1) and+(50-80) mm oversize (2)；
B. oversize (2) is crushed to < 80mm with crusher, becomes material (3), and mixes with screenings (1)；
C. mixed material adds water spray to carry out 1-4mm classification, and two kinds of materials are generated after classification, and granularity is the-particulate of (1-4) mm
Material (4) and granularity are+(1-4) mm coarse-grained material (5)；
D. fine (4) and water are by sorting generation heavy product (6) and light product (7), and heavy product (6) is after dewatering screen is dehydrated
As fine tailings product (9), light product (7) becomes fine concentrate product (11) after dewatering screen is dehydrated；
E. coarse-grained material (5) carries out three product selectings and generates heavy product (12), light product (14) and intermediate product (13), heavy product
(12) directly as spoil product, intermediate product (13) is used as chats product, and light product (14) continues classification and generates two kinds of grades
Material, i.e. granularity be-(10-20) mm coarse granular material (15) and granularity be+(10-20) mm block material (16)；
F. coarse granular material (15) is dehydrated into coarse-grain coarse ore concentrate product (18) by dewatering screen, and block material (16) is de- by dewatering screen
Water becomes block concentrate product (20)；
G. the backwater (8,10,17,19) of dehydration d and the obtained dewatering screen of dehydration f, which collects, is concentrated
Clarification generates primary water (21) and enriched product (22)；
H. enriched product (22) becomes mud mineral products (24) by filters pressing, and filtrate (23) and primary water (21) are collectively as recirculated water
It continues to use.
2. a kind of oil shale ore-dressing technique as described in claim 1, it is characterised in that granularity described in step d is-(1-4) mm
Fine (4) beneficiation method is hydrocyclone sorting.
3. a kind of oil shale ore-dressing technique as described in claim 1, it is characterised in that granularity described in step e is+(1-4) mm
Coarse-grained material (5) beneficiation method is the sorting of three product jiggings.
4. a kind of oil shale ore-dressing technique as described in claim 1, it is characterised in that granularity described in step f is+(10-20)
Mm block material (16) becomes block concentrate product (20) by dry.
5. a kind of oil shale ore-dressing technique as described in claim 1, it is characterised in that oversize described in step b (2) is used broken
Broken crusher machine is to < 50mm.
6. a kind of oil shale ore-dressing technique as described in claim 1, it is characterised in that oversize described in step b (2) is used broken
Broken crusher machine is to 50-80mm.
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| CN106362856B true CN106362856B (en) | 2019-05-03 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106607183B (en) * | 2017-02-09 | 2019-11-08 | 中国矿业大学 | A kind of modular high-density coal measures oil shale process for upgrading and upgrading system |
| CN109482493B (en) * | 2018-11-22 | 2021-11-26 | 中国矿业大学 | Dry separation process for full-grain-size oil shale |
| CN111998626B (en) * | 2020-09-10 | 2022-02-01 | 安徽马钢张庄矿业有限责任公司 | Low-concentration fine-grain tailing dehydration treatment device and method |
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|---|---|---|---|---|
| JP3711472B1 (en) * | 2004-12-28 | 2005-11-02 | 株式会社イーエムエス | Sorting method of crushing industrial waste using flowing water class and settling velocity |
| CN101869877A (en) * | 2010-06-09 | 2010-10-27 | 重庆南桐矿业有限责任公司南桐选煤厂 | Coal gangue sorting process |
| 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 |
| 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 |
-
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- 2015-07-23 CN CN201510434898.8A patent/CN106362856B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3711472B1 (en) * | 2004-12-28 | 2005-11-02 | 株式会社イーエムエス | Sorting method of crushing industrial waste using flowing water class and settling velocity |
| CN101869877A (en) * | 2010-06-09 | 2010-10-27 | 重庆南桐矿业有限责任公司南桐选煤厂 | Coal gangue sorting process |
| 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 |
| 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 |
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Address after: Room 3-3-1406-1, Zhongguancun energy and security science and Technology Park, building 3, No.16 Qinghua East Road, Haidian District, Beijing 100083 Patentee after: JINYITONG SCI.&TECH. BEIJING Co.,Ltd. Address before: 100083 Room 401, building 3, 16 Qinghua East Road, Haidian District, Beijing Patentee before: JINYITONG SCI.&TECH. BEIJING Co.,Ltd. |
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