CN106362856A - Oil shale mineral separation method - Google Patents
Oil shale mineral separation method Download PDFInfo
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- CN106362856A CN106362856A CN201510434898.8A CN201510434898A CN106362856A CN 106362856 A CN106362856 A CN 106362856A CN 201510434898 A CN201510434898 A CN 201510434898A CN 106362856 A CN106362856 A CN 106362856A
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- oil shale
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Abstract
The invention provides an oil shale mineral separation method and belongs to the field of oil shale industries. The oil shale mineral separation method is particularly applicable to the oil shale processing and utilization industry, and comprises the following steps: screening oil shale ores of which the grain sizes range between 0-300 mm; crushing oversize products (the grain sizes are larger than 50-80 mm), mixing the crushed oversize products with undersize products (the grain sizes are smaller than 50-80 mm), and adding water into the mixture for classification, so as to obtain fine-grain products (the grain sizes range between 1-4 mm) and coarse-grain products (the grain sizes are larger than 1-4 mm); performing separation and dehydration on the fine-grain products to obtain a fine concentrate product and a fine tailing product; performing three-product separation on the coarse-grain products to obtain waste rock, a middling product and concentrate; and performing further separation and dehydration on the concentrate to obtain a final coarse-grain concentrate product and a lump concentrate product, wherein water drained in all the dehydration steps is subjected to concentration and clarification, a muddy ore product is obtained through filter-pressing of a precipitate, and clarified water and a filtrate are utilized as circulating water. According to the oil shale mineral separation method provided by the invention, water is added for classification after oil shale is crushed, and separation of the coarse-grain products and that of the fine-grain products are performed, thereby solving the problem that in the prior art, the separation efficiency is low, effectively improving the concentrate yield of oil shale, and achieving a higher economic value.
Description
Technical field
The invention belongs to oil shale industry field, it is particularly suited for one kind of oil shale processing and utilization industry
Oil shale beneficiation method.
Background technology
Oil shale belongs to unconventional petroleum resources, is arranged with the feasibility of aboundresources and exploitation
For 21 century very important take over the energy, it is all non-renewable as oil, natural gas, coal
Fossil energy.Oil shale can obtain shale oil through low temperature distillation, and shale oils are like crude oil, permissible
Make gasoline, diesel oil or as fuel oil.In Waste Era of Oil, the exploitation to oil shale for the countries concerned
Using active.Oil Shale Resources in China rich reserves, also create big in progress of coal mining
Gauging shale, developing oil shale not only can alleviate contradiction between oil supply and demand, can also solve because useless
Abandon the environmental problem that oil shale causes, improve resource utilization.
At present, the oil shale Chemical Manufacture processing of China, simply to oil shale raw ore through simply broken
Broken be sized to certain grade (common for 10-80mm), product is directly carried out chemical industry conversion.Chinese state
The contained a kind of oil of Publication No. cn104194814a disclosed in Department of Intellectual Property of family September in 2014 19 days
Shale preselects discharge refuse -- distillation process, discloses a kind of simple oil shale two product jigging sorting method,
But through substantial amounts of industrial experiment it was demonstrated that the method effectively can not be sorted to oil shale in practice,
There is no separating effect in the case of more, due to oil shale proportion closely Rock Specific Gravity, and concentration criterion
Weight is all in 2.5 gram per centimeters3More than, conventional Coal Jigging Technique can not be used, and oil shale sorting industry is also no
Jigging sorting process implements precedent, therefore how to improve oil shale jigging sorting process effect, becomes capable
An industry difficult problem, by the many experiments present invention propose a kind of end block separately, the combining point of two-way two technology
Select new method.
Content of the invention
The purpose of the present invention is the processing and utilization for oil shale, provide a kind of simple, efficiently, can
Significantly improve oil shale concentrate yield, for removing the inorganic mineral in oil shale, obtain higher
Concentrate yield, produces the oil shale beneficiation method of bigger economic benefit.
The object of the present invention is achieved like this, and this oil shale beneficiation method step is as follows:
A. by granularity, the oil shale raw ore for 0-300mm carries out 50-80mm screening, produces under sieve
Thing+(50-80) mm and oversize-(50-80) mm；
B. oversize crusher in crushing becomes material to granularity less than 50-80mm, and and siftage
Mixing；
C. mixed material adds water spray and carries out 1-4mm classification, produces two kinds of materials, that is, after classification
Granularity is-fine of (1-4) mm and granularity be+(1-4) mm coarse-grained material；
D. fine and water produce weight product and light product through sorting, and weight product takes off through dewatering screen
Become fine tailings product, light product becomes fine concentrate product after dewatering screen dehydration after water；
E. coarse-grained material carries out three product selectings generation weight products, light product and intermediate product, produces again
Directly as spoil product, as chats product, light product continues classification generation two to intermediate product to thing
Kind of grade material: granularity is-(10-20) mm coarse-grained material and granularity be+(10-20) mm block
Material；
F. coarse-grained material is dehydrated into coarse-grain coarse ore concentrate product through dewatering screen, and block material is through dewatering screen
It is dehydrated into block concentrate product；
G. the backwater of the dewatering screen obtained by dehydration d and dehydration f collects and carries out
Concentrating clarifying, produces primary water and enriched product；
H. enriched product becomes mud mineral products through filter pressing, and filtrate and primary water are collectively as recirculated water
It is continuing with.
Described granularity be-(1-4) mm fine beneficiation method be hydrocyclone sort or its
Equivalent screening installation.
Described granularity be+(1-4) mm coarse-grained material beneficiation method be three product jiggings sorting or its
Equivalent screening installation.
Described granularity be+(10-20) mm block material may also pass through drying become block concentrate product.
Employ above-mentioned beneficiation method, the present invention can improve the oil content of oil shale concentrate, energy in a large number
Effectively improve ash content in refuse, increase jigging machine unit area treating capacity, reduce sorting cost, be one
Plant brand-new oil shale method for separating.The method also add the resource utilization of oil shale, increases
The economic benefit of enterprise, meets the requirement of sustainable development and energy-conserving and environment-protective, has extensive reality
The property used.
Brief description
Fig. 1 is a kind of process chart of present invention oil shale beneficiation method.
In figure: 1. siftage；2. oversize；3. material；4. fine；5. coarse-grained material；
6. weight product；7. light product；8. backwater；9. fine tailings product；10. backwater；11.
Fine concentrate product；12. weight products；13. intermediate products；14. light products；15. coarse-grained materials；
16. blocks of materials；17. backwaters；18. coarse-grain coarse ore concentrate products；19. backwaters；20. pieces of concentrate produce
Product；21. primary waters；22. enriched products；23. filtrates；24. mud mineral products.
Specific embodiment
Below in conjunction with accompanying drawing, one embodiment of the present of invention is further described:
As shown in figure 1, a kind of oil shale beneficiation method technique of the present invention:
A. the oil shale raw ore being (0-300mm) by granularity carries out 50-80mm screening, produces sieve
Lower thing 1 (+(50-80) mm) and oversize 2 (- (50-80) mm)；
B. oversize 2 extremely becomes material 3 less than 50-80mm with crusher in crushing, and and siftage
1 mixing；
C. mixed material adds water spray and carries out 1-4mm classification, produces two kinds of materials, grain after classification
Spending the fine 4 for-(1-4) mm and granularity is+(1-4) mm coarse-grained material 5；
D. fine 4 and water produce weight product 6 and light product 7, weight product 6 warp through sorting
Become fine tailings product 9, light product 7 becomes particulate after dewatering screen dehydration after dewatering screen dehydration
Concentrate product 11；
E. coarse-grained material 5 carries out three product selectings generation weight products 12, light product 14 and middle product
Thing 13, directly as spoil product, intermediate product 13, as chats product, gently produces weight product 12
Thing 14 continues classification and produces two kinds of grade materials: granularity is-(10-20) mm coarse-grained material 15
And granularity is+(10-20) mm block material 16；
F. coarse-grained material 15 is dehydrated into coarse-grain coarse ore concentrate product 18, block material 16 warp through dewatering screen
Cross dewatering screen and be dehydrated into block concentrate product 20；
G. the backwater 8 of the dewatering screen obtained by dehydration d and dehydration f, 10,17,
19 collect and carry out concentrating clarifying, produce primary water 21 and enriched product 22；
H. enriched product 22 becomes mud mineral products 24 through filter pressing, and filtrate 23 is with primary water 21 altogether
It is continuing with as recirculated water.
Granularity of the present invention be-(1-4) mm fine 4 beneficiation method be hydrocyclone
Sorting or its equivalent screening installation.
Granularity of the present invention be+(1-4) mm coarse-grained material 5 beneficiation method be three product jiggings
Machine sorting or its equivalent screening installation.
Granularity of the present invention be+(10-20) mm block material 16 may also pass through drying become block essence
Mineral products 20.
Though the present invention lists less embodiment, the person skilled of this area is to the present invention
Some remodeling of being done, improvement, replacement etc., or the embodiment above makees any combinations change,
All within protection scope of the present invention.
Claims (4)
1. a kind of oil shale beneficiation method is it is characterised in that comprise the steps:
A. first particle size range is carried out 50-80mm screening, generation+(50-80) mm siftage (1) and-(50-80) mm oversize (2) in 0-300mm oil shale raw ore；
B. oversize (2) crusher in crushing is to < 50-80mm, becomes material (3), and mixes with siftage (1)；
C. mixed material adds water spray and carries out 1-4mm classification, produces two kinds of materials after classification, and granularity is-and the fine (4) of (1-4) mm and granularity be+(1-4) mm coarse-grained material (5)；
D. fine (4) and water produce weight product (6) and light product (7) through sorting, and weight product (6) becomes fine tailings product (9) after dewatering screen dehydration, and light product (7) becomes fine concentrate product (11) after dewatering screen dehydration；
E. coarse-grained material (5) carries out three product selectings generation weight product (12), light product (14) and intermediate product (13), weight product (12) is directly as spoil product, intermediate product (13) is as chats product, light product (14) continues classification and produces two kinds of grade materials, that is, granularity be-(10-20) mm coarse-grained material (15) and granularity be+(10-20) mm block material (16)；
F. coarse-grained material (15) is dehydrated into coarse-grain coarse ore concentrate product (18) through dewatering screen, and block material (16) is dehydrated into block concentrate product (20) through dewatering screen；
G. the backwater (8) of dewatering screen obtained by dehydration d and dehydration f, (10), (17), (19) are collected and are carried out concentrating clarifying, produce primary water (21) and enriched product (22)；
H. enriched product (22) becomes mud mineral products (24) through filter pressing, and filtrate (23) is continuing with collectively as recirculated water with primary water (21).
2. as claimed in claim 1 a kind of oil shale beneficiation method it is characterised in that granularity described in step d be-(1-4) mm fine (4) beneficiation method be hydrocyclone sort or its equivalent screening installation.
3. as claimed in claim 1 a kind of oil shale beneficiation method it is characterised in that granularity described in step e be+(1-4) mm coarse-grained material (5) beneficiation method be three product jiggings sorting or its equivalent screening installation.
4. as claimed in claim 1 a kind of oil shale beneficiation method it is characterised in that granularity described in step f be+(10-20) mm block material (16) through drying become block concentrate product (20).
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| CN201510434898.8A CN106362856B (en) | 2015-07-23 | 2015-07-23 | A kind of oil shale beneficiation method |
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| CN201510434898.8A CN106362856B (en) | 2015-07-23 | 2015-07-23 | A kind of oil shale beneficiation method |
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| CN106362856A true CN106362856A (en) | 2017-02-01 |
| CN106362856B CN106362856B (en) | 2019-05-03 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018145512A1 (en) * | 2017-02-09 | 2018-08-16 | 中国矿业大学 | Modular high-density coal measures oil shale quality improvement process and quality improvement system |
| CN109482493A (en) * | 2018-11-22 | 2019-03-19 | 中国矿业大学 | A kind of wholegrain grade oil shale dry-process sorting process |
| CN111998626A (en) * | 2020-09-10 | 2020-11-27 | 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
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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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 |
| 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 |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018145512A1 (en) * | 2017-02-09 | 2018-08-16 | 中国矿业大学 | Modular high-density coal measures oil shale quality improvement process and quality improvement system |
| JP2019527613A (en) * | 2017-02-09 | 2019-10-03 | 中国砿業大学Ｃｈｉｎａ Ｕｎｉｖｅｒｓｉｔｙ Ｏｆ Ｍｉｎｉｎｇ Ａｎｄ Ｔｅｃｈｎｏｌｏｇｙ | Modular upgrade process and upgrade system for high density coal-based oil shale |
| US10875055B2 (en) | 2017-02-09 | 2020-12-29 | China University Of Mining And Technology | Modular quality improvement process and quality improvement system for high density coal measures oil shale |
| CN109482493A (en) * | 2018-11-22 | 2019-03-19 | 中国矿业大学 | A kind of wholegrain grade oil shale dry-process sorting process |
| CN109482493B (en) * | 2018-11-22 | 2021-11-26 | 中国矿业大学 | Dry separation process for full-grain-size oil shale |
| CN111998626A (en) * | 2020-09-10 | 2020-11-27 | 安徽马钢张庄矿业有限责任公司 | Low-concentration fine-grain tailing dehydration treatment device and method |
| 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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| CN106362856B (en) | 2019-05-03 |
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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. |