CN1465441A - Dense-media and flotation combined coal-dressing optimization method - Google Patents
Dense-media and flotation combined coal-dressing optimization method Download PDFInfo
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- CN1465441A CN1465441A CNA021214999A CN02121499A CN1465441A CN 1465441 A CN1465441 A CN 1465441A CN A021214999 A CNA021214999 A CN A021214999A CN 02121499 A CN02121499 A CN 02121499A CN 1465441 A CN1465441 A CN 1465441A
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Abstract
The present invention discloses a 2002 heavymedia and flotation combined coal-separating method, including raw material coal preparation, heavymedia selection, crude slurry separating and recovering, flotation, concentrate slurry dehydration and water treatment and drying or no drying treatment in winter. Said invention also provides various machines of heavymedia cyclone separator, deslimer, flotation column and pressure filtering machine, etc. for implementing said invention.
Description
The present invention relates to a kind of coal coal preparation method, particularly a kind of heavily Jie, flotation combined coal-dressing optimization method that relies on dense media and coal floatation.
Existing heavy Jie, flotation combined coal-dressing method, technology is reliable, and efficiency of separation height is present state-of-the-art coal preparation method, is to solve the high efficiency method that ash falls in the coal upgrading.It comprises: raw coal preparation, sink float, flotation, clean coal slime dewatering, black water are handled and are furnished with part such as cleaned coal winter dryness at refrigerant latitudes.
The objective of the invention is to solve the problem that existing heavy Jie, flotation combined coal-dressing method need solve: optimize process system, reduce the process system investment, reduce the product processing charges, reduce equipment maintenance capacity, reduce product winter dryness feeding even cancellation is dry.
The object of the present invention is achieved like this, and it comprises: feed coal preparation, sink float, separation of coarse slime recovery, flotation, clean coal slime dewatering and black water are handled, and cleaned coal winter dryness or moist.Raw coal is prepared part and is arranged in the sink float front; Separation of coarse slime reclaims and is arranged in after the sink float, before the flotation; Clean coal slime dewatering is arranged in after the flotation, before the cleaned coal drying; Black water is handled and is arranged in after the flotation.
Purpose of the present invention also can realize by following technical measures: feed coal is prepared this part feed coal that suitable pan feeding character is provided for sink float.The main frame that sink float adopts is heavy medium cyclone or lump coal separation machine and heavy medium cyclone, separation of coarse slime reclaims and adopts cyclone and desliming device or directly adopt desliming device, the main frame that flotation is adopted is a flotation column, clean coal slime dewatering adopts blotter press or pressurization slag filtering machine, black water is handled and is adopted thickener, blotter press and coal slime precipitation pond, the dry drying machine that adopts of cleaned coal.
The present invention has the following advantages compared to existing technology:
1. dual medium cyclone dressing keeps China's " 95 " state key brainstorm subject characteristics: equipment high efficiency, work simplification.
2. separation of coarse slime reclaims and reduces the floatation feed amount to greatest extent, thereby reaches the purpose that reduces the coal separation cost, improves the clean coal yield of sink float.
3. flotation column is adopted in flotation, is particularly suitable for the superfine coal slime of sorting, improves the floatation clean coal productive rate, relatively save power consumption 30-40% with existing shallow slot flotation device simultaneously, and maintenance capacity seldom, slightly reduces in the investment.
4. clean coal slime dewatering adopts blotter press to reduce 25-32% than existing disk slag filtering machine product moisture, and power consumption reduces 50-60%, and investment reduces 1 times, and is identical with pressurization slag filtering machine comparative product moisture, but investment reduces 2-3 doubly.
5. final head coal product moisture reaches 9.8-11.5%, can cancel winter dryness substantially or reduce dry feeding to greatest extent, reduces coal separation cost 20-40%, saves investment 20-30%.
6. gross investment of the present invention reduces 0.4-1 doubly than existing heavily Jie, flotation combined coal-dressing method, and clean coal yield improves 0.5-1.5%, and the product processing cost reduces 20-40%.
7. reach the wash water closed cycle.
Description of drawings:
Fig. 1 is a process chart of the present invention
Below in conjunction with view and embodiment in detail the present invention is described in detail, it mainly comprises: feed coal preparation 1, sink float 2, separation of coarse slime recovery 3, flotation 4, clean coal slime dewatering 5 and black water processing 6 and winter dryness or moist 7.Raw coal is prepared this part and is arranged in the sink float front; Separation of coarse slime reclaims and is arranged in after the sink float, before the flotation; Clean coal slime dewatering is arranged in after the flotation before the cleaned coal drying; Black water is handled and is arranged in after the flotation.Feed coal is prepared this part feed coal that suitable pan feeding character is provided for sink float.The main frame that sink float adopts is heavy medium cyclone or lump coal separation machine and heavy medium cyclone, separation of coarse slime reclaims and adopts cyclone, desliming device or directly adopt desliming device, the main frame that flotation is adopted is a flotation column, clean coal slime dewatering adopts blotter press or pressurization slag filtering machine, black water is handled and is adopted thickener, blotter press and coal slime precipitation pond, the dry drying machine that adopts of cleaned coal.
Operation principle of the present invention is: feed coal enters sink float 2 after feed coal is prepared 1 processing processing; Heavy-media suspension in the sink float 2 enters heavy medium cyclone or lump coal separation machine and heavy medium cyclone with certain pressure simultaneously, select light, heavy product, the de-mediated matter in sink float 2, dehydration and magnetic separation reclaimer obtain part final products and black water again; Black water enters separation of coarse slime with certain pressure and reclaims 3, selects the low ash content coarse grain coal slime of part, mixes in the light product, and remaining black water enters the main frame flotation column of flotation 4, obtains concentrate and tailings two products; Flotation concentrate enters clean coal slime dewatering 5, obtains the cleaned coal of moisture 18-22%, and be no more than 10% o'clock in comprehensive moisture of cleaned coal winter, directly makes final cleaned coal, otherwise go into drying; Flotation tailing enters black water and handles 6 thickener, blotter press or slurry pond processing, obtains tail coal mud and recirculated water, realizes purpose of the present invention.
Claims (5)
1. heavily be situated between for one kind 2002, the flotation combined coal-dressing method, comprising: feed coal preparation, sink float, separation of coarse slime reclaim flotation, clean coal slime dewatering and black water processing and winter dryness or moist.It is characterized in that the main frame that sink float adopts is heavy medium cyclone or lump coal separation machine and heavy medium cyclone, separation of coarse slime reclaims and adopts cyclone and desliming device or directly use desliming device, the main frame that flotation is adopted is a flotation column, and clean coal slime dewatering adopts blotter press or pressurization slag filtering machine.
According to claim 1 described 2002 heavily be situated between, the flotation combined coal-dressing method, it is characterized in that: the main frame that sink float adopts is heavy medium cyclone or lump coal separation machine and heavy medium cyclone.
According to claim 1 described 2002 heavily be situated between, the flotation combined coal-dressing method, it is characterized in that: separation of coarse slime reclaim to adopt cyclone and desliming device or directly uses desliming device.
According to claim 1 described 2002 heavily be situated between, the flotation combined coal-dressing method, it is characterized in that: the main frame that flotation is adopted is a flotation column.
According to claim 1 described 2002 heavily be situated between, the flotation combined coal-dressing method, it is characterized in that: clean coal slime dewatering adopts blotter press or pressurization slag filtering machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA021214999A CN1465441A (en) | 2002-06-26 | 2002-06-26 | Dense-media and flotation combined coal-dressing optimization method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA021214999A CN1465441A (en) | 2002-06-26 | 2002-06-26 | Dense-media and flotation combined coal-dressing optimization method |
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| CN1465441A true CN1465441A (en) | 2004-01-07 |
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| CNA021214999A Pending CN1465441A (en) | 2002-06-26 | 2002-06-26 | Dense-media and flotation combined coal-dressing optimization method |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101011679B (en) * | 2006-12-05 | 2010-10-06 | 唐山易通科技开发有限公司 | Simplified coal slurry dense-medium coal separation process |
| CN101284254B (en) * | 2008-06-04 | 2012-09-05 | 神华集团有限责任公司 | Floatation coal separation technique |
| CN102962122A (en) * | 2012-12-03 | 2013-03-13 | 中国矿业大学 | Deep preparation technology of coal for direct coal liquefacation |
| CN103934098A (en) * | 2014-05-15 | 2014-07-23 | 华东理工大学 | High-carbon pulverized coal ash/coal slag decarbonization and classification method and device |
| CN104148164A (en) * | 2014-07-04 | 2014-11-19 | 中国海洋石油总公司 | Method for coal washing by means of carbon dioxide |
| CN106984427A (en) * | 2017-04-10 | 2017-07-28 | 拜城县众泰煤焦化有限公司 | A kind of coal preparation plant's sorting automatically controls process unit and method |
| CN107008564A (en) * | 2017-01-11 | 2017-08-04 | 北京中煤煤炭洗选技术有限公司 | A kind of method that the dense media rate of recovery is improved in coal preparation technique |
| CN110575904A (en) * | 2019-09-23 | 2019-12-17 | 昆明理工大学 | Spodumene grading-grade dual medium-flotation beneficiation method |
| CN113492054A (en) * | 2021-07-22 | 2021-10-12 | 山西华阳集团新能股份有限公司 | Method for refining ultra-low ash anthracite |
-
2002
- 2002-06-26 CN CNA021214999A patent/CN1465441A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101011679B (en) * | 2006-12-05 | 2010-10-06 | 唐山易通科技开发有限公司 | Simplified coal slurry dense-medium coal separation process |
| CN101284254B (en) * | 2008-06-04 | 2012-09-05 | 神华集团有限责任公司 | Floatation coal separation technique |
| CN102962122A (en) * | 2012-12-03 | 2013-03-13 | 中国矿业大学 | Deep preparation technology of coal for direct coal liquefacation |
| CN103934098A (en) * | 2014-05-15 | 2014-07-23 | 华东理工大学 | High-carbon pulverized coal ash/coal slag decarbonization and classification method and device |
| CN104148164A (en) * | 2014-07-04 | 2014-11-19 | 中国海洋石油总公司 | Method for coal washing by means of carbon dioxide |
| CN104148164B (en) * | 2014-07-04 | 2016-09-21 | 中国海洋石油总公司 | A kind of method utilizing carbon dioxide to carry out coal washing |
| CN107008564A (en) * | 2017-01-11 | 2017-08-04 | 北京中煤煤炭洗选技术有限公司 | A kind of method that the dense media rate of recovery is improved in coal preparation technique |
| CN107008564B (en) * | 2017-01-11 | 2019-04-30 | 北京中煤煤炭洗选技术有限公司 | The method of the dense media rate of recovery is improved in a kind of coal preparation technique |
| CN106984427A (en) * | 2017-04-10 | 2017-07-28 | 拜城县众泰煤焦化有限公司 | A kind of coal preparation plant's sorting automatically controls process unit and method |
| CN106984427B (en) * | 2017-04-10 | 2019-02-12 | 拜城县众泰煤焦化有限公司 | A kind of sorting of coal preparation plant automatically controls process unit and method |
| CN110575904A (en) * | 2019-09-23 | 2019-12-17 | 昆明理工大学 | Spodumene grading-grade dual medium-flotation beneficiation method |
| CN113492054A (en) * | 2021-07-22 | 2021-10-12 | 山西华阳集团新能股份有限公司 | Method for refining ultra-low ash anthracite |
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