CN203635312U - Mineral tailings grading and separating recovery system for middings magnetic separator in dense medium coal preparation plant - Google Patents
Mineral tailings grading and separating recovery system for middings magnetic separator in dense medium coal preparation plant Download PDFInfo
- Publication number
- CN203635312U CN203635312U CN201320763399.XU CN201320763399U CN203635312U CN 203635312 U CN203635312 U CN 203635312U CN 201320763399 U CN201320763399 U CN 201320763399U CN 203635312 U CN203635312 U CN 203635312U
- Authority
- CN
- China
- Prior art keywords
- coal
- magnetic separator
- slime
- mine tailing
- middings
- 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.)
- Expired - Lifetime
Links
- 239000003245 coal Substances 0.000 title claims abstract description 141
- 239000006148 magnetic separator Substances 0.000 title claims abstract description 56
- 238000011084 recovery Methods 0.000 title claims abstract description 26
- 229910052500 inorganic mineral Inorganic materials 0.000 title abstract description 5
- 239000011707 mineral Substances 0.000 title abstract description 5
- 230000018044 dehydration Effects 0.000 claims abstract description 25
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 25
- 238000005188 flotation Methods 0.000 claims abstract description 20
- 238000000926 separation method Methods 0.000 claims description 16
- 238000013019 agitation Methods 0.000 claims description 7
- 238000005192 partition Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 14
- 238000000034 method Methods 0.000 abstract description 9
- 230000002349 favourable effect Effects 0.000 abstract description 4
- 239000003153 chemical reaction reagent Substances 0.000 abstract 1
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 208000005156 Dehydration Diseases 0.000 description 20
- 238000007667 floating Methods 0.000 description 7
- 230000008901 benefit Effects 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 5
- 239000002956 ash Substances 0.000 description 4
- 239000010866 blackwater Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000010883 coal ash Substances 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 235000012054 meals Nutrition 0.000 description 1
- 238000010334 sieve classification Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
Abstract
The utility model provides a mineral tailings grading and separating recovery system for middings magnetic separator in a dense medium coal preparation plant. Devices adopted by the system comprise a middings magnetic separator and a flotation device; the system further comprises a coal slime grading device and a coarse slime dehydration recovery device, wherein the middings magnetic separator and the slime grading device are connected; the slime grading device is connected with the flotation device and the coarse slime dehydration recovery device respectively. According to the mineral tailings grading and separating recovery system for the middings magnetic separator in the dense medium coal preparation plant, the middings magnetic separator mineral tailings in the dense medium coal preparation plant are first graded; different separating and recovery methods are adopted according to properties of materials with different grain grades; under the condition of similar clean coal quality indexes, the clean coal recovery rate can be increased by more than 10 percent or the amount of flotation device and the flotation reagent consumption can be decreased by 30-50 percent; moreover, the flotability of the flotation feeding is improved and favorable conditions for flotation to acquire favorable technical and economical index are created.
Description
Technical field
The utility model relates to a kind of particulate coal sorting process, specifically a kind of middle coal magnetic separator mine tailing classification and sorting recovery system that is applied to hm coal preparation plant.
Background technology
Coal Cleaning by Dense Medium Cyclone technology a series of remarkable advantages such as sharpness of separation and clean coal recovery are high because having, unit disposal ability is large, obtain Rapid Popularization application in coal preparation plant in recent years, become the one preferred technique of current newly-built coal preparation plant and coal preparation plant's technological transformation.
In the coal preparation plant that uses three products heavy medium cyclone, feed coal sub-elects cleaned coal, middle coal and three products of spoil through cyclone, in three products, the fine particle stage material of < 0.5mm～1.0mm is together discharged and is become rare medium with the heavy-media suspension as separating medium in product de-media dehydration link, then becomes respectively cleaned coal magnetic separator mine tailing, middle coal magnetic separator mine tailing and spoil magnetic separator mine tailing after magnetic separator reclaims dense media.Cleaned coal magnetic separator mine tailing feeds floatation system sorting and reclaims, and spoil magnetic separator mine tailing feeds tail coal mud system, the current treatment process for middle coal magnetic separator mine tailing, and the one, all feed tail coal mud system, the 2nd, all feed floatation system sorting and reclaim.
Be subject to the restriction of heavy medium cyclone lower limit of separation (the effectively minimum particle size of sorting), material lower than lower limit of separation granularity can not obtain effective sorting, contain a large amount of cleaned coal, and the lower limit of separation of three products heavy medium cyclone is just in time within middle coal magnetic separator mine tailing particle size range, if middle coal magnetic tailing all enters tail coal mud system, must cause a large amount of quality fine coal losses lower than heavy medium cyclone lower limit of separation, not only reduce the economic benefit of coal preparation plant, and caused valuable non-renewable coal resources waste.If middle coal magnetic tailing all enters floatation system, the material that is greater than cyclone lower limit of separation granularity has obtained effective sorting, ash is demarcated between floatation clean coal and flotation tailing ash content, this partial material enters floatation clean coal, floatation clean coal is polluted, floatation clean coal ash content is raise, cause floatation clean coal off quality; As this partial material enters flotation tailing, cause flotation tailing ash content on the low side, make the middle coal losses that can be used as thermal coal in the tail coal mud as discarded object, not only cause floating operation difficulty to strengthen and stock number expense, and this part has obtained effective sorting material and enters floatation system and also caused repetition sorting, increase the consumption of floatation equipment quantity and floating agent, thereby increased construction of coal preparation plant and producing cost.
Summary of the invention
Goal of the invention of the present utility model is all to enter tail coal mud system for coal magnetic separator mine tailing in prior art hm coal preparation plant, cause a large amount of quality fine coal losses lower than heavy medium cyclone lower limit of separation, reduce the economic benefit of coal preparation plant, caused valuable non-renewable coal resources waste, and all enter floatation system, cause that floatation clean coal ash content is higher or flotation tailing ash content is on the low side, cause product quality defective, floating operation difficulty strengthens and has increased the consumption of floatation equipment quantity and floating agent, thereby increase the deficiency of construction of coal preparation plant and producing cost, provide in a kind of hm coal preparation plant coal magnetic separator mine tailing first by raw meal particle size classification, then adopt distinct methods sorting and recovery according to the character of size fractionated material, under the condition that guarantees to produce head coal product mass conservation, increase substantially coal magnetic separator mine tailing classification and sorting recovery system in the hm coal preparation plant of clean coal recovery.
The technical scheme that realizes the employing of foregoing invention object is:
The system that a kind of coal magnetic separator mine tailing classification and sorting for hm coal preparation plant reclaims, the equipment that this system is used comprises middle coal magnetic separator, floatation equipment, described system also comprises coal slime classifying equipoment and coarse slime dehydration reclaimer, described middle coal magnetic separator is connected with coal slime classifying equipoment, and coal slime classifying equipoment is connected with floatation equipment and coarse slime dehydration reclaimer respectively.
Further, described coal slime classifying equipoment is selected vibration separation screen, sieve bend or classifying cyclone.
Further, described coarse slime dehydration reclaimer is selected centrifugal dehydrator or vibrating-dewatering screen.
Further, described floatation equipment is selected agitation impeller flotator, air jet flotation machine or flotation column.
Further, the partition size of described middle coal magnetic separator mine tailing is 0.20mm～0.50mm.
Adopt technique scheme, all feed tail coal mud system with coal magnetic separator mine tailing in existing hm coal preparation plant or all feed floatation system technology first than, the middle coal magnetic separator mine tailing of hm coal preparation plant is first carried out classification by the utility model, and then adopt distinct methods sorting and recovery according to the character of different grain size stage material, in identical quality of cleaned coal index situation, can improve clean coal recovery more than 10%, or reduce floatation equipment quantity and floating agent and consume 30%～50%, and improve the floatability of floatation feed, for obtaining good technical-economic index, flotation creates favorable conditions.
Accompanying drawing explanation
Fig. 1 is process chart of the present utility model.
In figure: middle coal magnetic separator 1, coal slime classifying equipoment 2, coarse slime dehydration reclaimer 3, floatation equipment 4.
The specific embodiment
Below in conjunction with drawings and Examples, the utility model is further described.
The utility model provides coal magnetic separator mine tailing classification and sorting recovery system in a kind of hm coal preparation plant, design philosophy of the present utility model is: according to the middle coal magnetic separator mine tailing of hm coal preparation plant owing to being subject to the restriction of gravitational separation equipment lower limit of separation, coarse fraction material has wherein obtained effective sorting, and fine particle stage material does not obtain the state of the art of effective sorting, in change, coal magnetic separator mine tailing all feeds floatation system sorting or all feeds the traditional handicraft of tail coal mud system processing, the classification of first centering coal magnetic separator mine tailing, and then adopt distinct methods sorting and recovery according to the character of different grain size stage material, in identical quality of cleaned coal index situation, can improve clean coal recovery more than 10%, or reduce floatation equipment volume and floating agent and consume 30%～50%, and improve the floatability of floatation feed, for obtaining good technical-economic index, flotation creates favorable conditions.
Specific embodiment of the utility model
The equipment that the present embodiment adopts has: middle coal magnetic separator 1, coal slime classifying equipoment 2, coarse slime dehydration reclaimer 3, floatation equipment 4.The coal slime classifying equipoment 2 of the present embodiment is selected vibration separation screen, and coarse slime dehydration reclaimer 3 is selected centrifugal dehydrator, and floatation equipment 4 is selected agitation impeller flotator.Its syndeton is shown in Fig. 1, mine tailing outlet and the entrance of coal slime classifying equipoment 2 vibration separation screens of middle coal magnetic separator 1 connect, the coarse-grained material outlet of vibration separation screen connects with the feeding mouth of coarse slime dehydration reclaimer 3 centrifugal dehydrators, fine outlet and the feeding mouth of floatation equipment 4 agitation impeller flotators of coal slime classifying equipoment 2 connect, and the black water outlet of coarse slime dehydration reclaimer 3 centrifugal dehydrators connects with the entrance of floatation equipment 4 agitation impeller flotators or the entrance of tail coal mud system.The mine tailing of middle coal magnetic separator 1 enters coal slime classifying equipoment 2 vibration separation screens, and the partition size of middle coal magnetic separator mine tailing is 0.20mm～0.50mm.After vibration separation sieve classification, be divided in coarse fraction coal magnetic separator mine tailing two parts in coal magnetic separator mine tailing and fine fraction, in coarse fraction, coal magnetic separator mine tailing feeds the 3 centrifugal dehydrator Direct Dehydrations recovery of coarse slime dehydration reclaimer, in the coarse grain reclaiming, coal magnetic separator mine tailing becomes thermal coal, and the black water that coarse slime dehydration reclaimer 3 centrifugal dehydrators are deviate from feeds floatation equipment 4 agitation impeller flotator sortings or enters the processing of tail coal mud system; In fine fraction, coal magnetic separator mine tailing feeds floatation equipment 4 agitation impeller flotator sortings, and the floatation clean coal of sorting becomes head coal product through dehydration, and flotation tailing enters the processing of tail coal mud system.
Coal slime classifying equipoment 2 of the present utility model is selected such as sieve bend or classifying cyclone, and coarse slime dehydration reclaimer 3 is selected vibrating-dewatering screen, and floatation equipment 4 is selected such as air jet flotation machine or flotation column, the same above-described embodiment of its connected mode and operating function.
The course of work of the present utility model:
Mine tailing outlet and the entrance of coal slime classifying equipoment 2 of middle coal magnetic separator 1 connect, the coarse-grained material outlet of coal slime classifying equipoment 2 connects with the feeding mouth of coarse slime dehydration reclaimer 3, fine outlet and the feeding mouth of floatation equipment 4 of coal slime classifying equipoment 2 connect, and the black water outlet of coarse slime dehydration reclaimer 3 connects with the entrance of floatation equipment 4 or the entrance of tail coal mud system.The mine tailing of middle coal magnetic separator 1 enters coal slime classifying equipoment 2, after classified, be divided in coarse fraction coal magnetic separator mine tailing two parts in coal magnetic separator mine tailing and fine fraction, in coarse fraction, coal magnetic separator mine tailing feeds the 3 dehydration recovery of coarse slime dehydration reclaimer, in the coarse grain reclaiming, coal magnetic separator mine tailing becomes thermal coal, and the black water that coarse slime dehydration reclaimer 3 is deviate from feeds floatation equipment 4 sortings or feeds the processing of tail coal mud system; In fine fraction, coal magnetic separator mine tailing feeds floatation equipment 4 sortings, and the floatation clean coal of sorting becomes head coal product through dehydration, and flotation tailing enters the processing of tail coal mud system.
The utility model makes to obtain coal magnetic separator mine tailing in the coarse grain of effective sorting and directly reclaims, no longer enter floatation system and repeat sorting, floatation equipment quantity and floating agent consumption are reduced, construction and the producing cost of coal preparation plant are reduced, improve the floatability of floatation feed, for the normal operation of floatation system, improve clean coal yield and created advantage; Make not obtain coal magnetic separator mine tailing in the fine fraction of effective sorting simultaneously and obtain effective sorting at floatation system, prevent the loss of fine fraction cleaned coal, improved clean coal recovery, increased coal preparation plant's economic benefit, protected valuable mineral resources.
Claims (5)
1. the coal magnetic separator mine tailing classification and sorting recovery system for hm coal preparation plant, the equipment that this system is used comprises middle coal magnetic separator, coal slime classifying equipoment, it is characterized in that, described system also comprises floatation equipment and coarse slime dehydration reclaimer, described middle coal magnetic separator is connected with coal slime classifying equipoment, and coal slime classifying equipoment is connected with floatation equipment and coarse slime dehydration reclaimer respectively.
2. middle coal magnetic separator mine tailing classification and sorting recovery system according to claim 1, is characterized in that, described coal slime classifying equipoment is selected vibration separation screen, sieve bend or classifying cyclone.
3. middle coal magnetic separator mine tailing classification and sorting recovery system according to claim 1, is characterized in that, described coarse slime dehydration reclaimer is selected centrifugal dehydrator or vibrating-dewatering screen.
4. middle coal magnetic separator mine tailing classification and sorting recovery system according to claim 1, is characterized in that, described floatation equipment is selected agitation impeller flotator, air jet flotation machine or flotation column.
5. middle coal magnetic separator mine tailing classification and sorting recovery system according to claim 1, is characterized in that, the partition size of described middle coal magnetic separator mine tailing is 0.20mm～0.50mm.
?
?
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320763399.XU CN203635312U (en) | 2013-11-28 | 2013-11-28 | Mineral tailings grading and separating recovery system for middings magnetic separator in dense medium coal preparation plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320763399.XU CN203635312U (en) | 2013-11-28 | 2013-11-28 | Mineral tailings grading and separating recovery system for middings magnetic separator in dense medium coal preparation plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203635312U true CN203635312U (en) | 2014-06-11 |
Family
ID=50866594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320763399.XU Expired - Lifetime CN203635312U (en) | 2013-11-28 | 2013-11-28 | Mineral tailings grading and separating recovery system for middings magnetic separator in dense medium coal preparation plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203635312U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104650952A (en) * | 2013-11-21 | 2015-05-27 | 中国石油天然气股份有限公司 | Tower visbreaking thermal retention time estimating method and reaction apparatus |
| CN110153143A (en) * | 2019-03-14 | 2019-08-23 | 西安煤科动力科技有限公司 | A kind of coal slime tailing, fired brick prepared therefrom and preparation method thereof |
| CN110523525A (en) * | 2019-09-09 | 2019-12-03 | 安徽理工大学 | In a kind of Oversized Coking Coal Cleaning Plant, cash magnetic separation tail coal mud flotation recovery technique |
| CN111195557A (en) * | 2018-11-19 | 2020-05-26 | 冯福东 | Medium coal magnetic separation tailing recovery equipment and process thereof |
| CN111434387A (en) * | 2019-01-15 | 2020-07-21 | 华北理工大学 | Beneficiation method for extracting low-ash clean coal from coal slime step by step |
| CN111515018A (en) * | 2020-05-19 | 2020-08-11 | 唐山国华科技国际工程有限公司 | Coal slime grading and sorting process in coking coal separation plant |
-
2013
- 2013-11-28 CN CN201320763399.XU patent/CN203635312U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104650952A (en) * | 2013-11-21 | 2015-05-27 | 中国石油天然气股份有限公司 | Tower visbreaking thermal retention time estimating method and reaction apparatus |
| CN104650952B (en) * | 2013-11-21 | 2016-06-08 | 中国石油天然气股份有限公司 | A kind of soaker visbreaking heat time of staying estimating and measuring method and reaction unit |
| CN111195557A (en) * | 2018-11-19 | 2020-05-26 | 冯福东 | Medium coal magnetic separation tailing recovery equipment and process thereof |
| CN111434387A (en) * | 2019-01-15 | 2020-07-21 | 华北理工大学 | Beneficiation method for extracting low-ash clean coal from coal slime step by step |
| CN111434387B (en) * | 2019-01-15 | 2022-02-11 | 华北理工大学 | Beneficiation method for extracting low-ash clean coal from coal slime step by step |
| CN110153143A (en) * | 2019-03-14 | 2019-08-23 | 西安煤科动力科技有限公司 | A kind of coal slime tailing, fired brick prepared therefrom and preparation method thereof |
| CN110523525A (en) * | 2019-09-09 | 2019-12-03 | 安徽理工大学 | In a kind of Oversized Coking Coal Cleaning Plant, cash magnetic separation tail coal mud flotation recovery technique |
| CN111515018A (en) * | 2020-05-19 | 2020-08-11 | 唐山国华科技国际工程有限公司 | Coal slime grading and sorting process in coking coal separation plant |
| CN111515018B (en) * | 2020-05-19 | 2021-09-28 | 唐山国华科技国际工程有限公司 | Coal slime grading and sorting process in coking coal separation plant |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203635312U (en) | Mineral tailings grading and separating recovery system for middings magnetic separator in dense medium coal preparation plant | |
| CN103639077A (en) | Middings magnetic separator tailings classifying separation recovery system and middings magnetic separatortailings classifying separation recovery technology for dense medium coal preparation plant | |
| CN102211054B (en) | Process for sorting coarse coal slime by utilizing heavy medium liquid-solid fluidized bed | |
| CN105597915B (en) | The wide dual Jie's whole coarse slime separating process of grade can be achieved in one kind | |
| CN106179717B (en) | A kind of full level of thermal coal is selected in simplified heavy medium sorting process | |
| CN103464272B (en) | A kind of coarse slime two sections of water Jie method for separating | |
| CN103350027A (en) | Classified-desliming pressurized-feeding three-product dense medium cyclone coal preparation process | |
| CN104307624B (en) | A kind of drying slime device and technique | |
| CN104549710B (en) | A kind of three sections of open circuit compounding separation techniques of coarse slime and system | |
| CN102847606A (en) | Coarse slime separation process | |
| CN105665122B (en) | The beneficiation method of troilite is reclaimed from gangue | |
| CN202129156U (en) | Three-product autogenous medium cyclone for coarse coal slime separation | |
| CN112371325A (en) | Power coal grading washing process | |
| CN109225611B (en) | Coarse slime separating system and process of three-product liquid-solid fluidized bed | |
| CN110523524A (en) | A kind of full grade of anthracite is selected to simplify sorting process | |
| CN103920582B (en) | A kind of closed circuit grading technology being applicable to Bed for Fine Coal classification | |
| CN105195427B (en) | A kind of iron ore dry separation technique based on dense gas solid bed | |
| CN105642431B (en) | Method for gravity separation of sulfur concentrate from sulfur-containing coal gangue | |
| CN109701730B (en) | Efficient coal washing process capable of improving utilization rate | |
| CN104437828A (en) | Efficient desulfuration and deashing dense medium separation technology for fine coal | |
| CN109201315B (en) | Coal washing process capable of improving utilization rate | |
| CN108855579B (en) | Coal dressing method by using aqueous medium cyclone | |
| CN204194144U (en) | Thick floatation equipment is cut based on entering the pre-current stabilization of floating ore pulp | |
| CN210449500U (en) | Coal dressing and desliming system for coal slime reseparation | |
| CN105126991A (en) | Main washing technology of coal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Yao Weimin Inventor after: Wang Peng Inventor after: Yan Baozhi Inventor after: Li Jinhua Inventor after: Zhao Shuhui Inventor before: Yao Weimin Inventor before: Wang Peng Inventor before: Yan Baozhi Inventor before: Li Baohua Inventor before: Zhao Shuhui |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: YAO WEIMIN WANG PENG YAN BAOZHI LI BAOHUA ZHAO SHUHUI TO: YAO WEIMIN WANG PENG YAN BAOZHI LI JINHUA ZHAO SHUHUI |
|
| CX01 | Expiry of patent term |
Granted publication date: 20140611 |
|
| CX01 | Expiry of patent term |