CN101322959A - Use of cold rolling waste emulsified mixture in coal slurry flotation - Google Patents
Use of cold rolling waste emulsified mixture in coal slurry flotation Download PDFInfo
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- CN101322959A CN101322959A CNA2007101127921A CN200710112792A CN101322959A CN 101322959 A CN101322959 A CN 101322959A CN A2007101127921 A CNA2007101127921 A CN A2007101127921A CN 200710112792 A CN200710112792 A CN 200710112792A CN 101322959 A CN101322959 A CN 101322959A
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Abstract
The invention discloses an application of cold-rolling waste emulsion in flotation coal slime. The application comprises the steps that a floatation machine is adopted to carry out coal slime flotation; 2-octyl alcohol is adopted as a foaming agent; during the process of floatation, the concentration of floatation of the coal slime is adjusted to 10 percent to 20 percent and then the 2-octyl alcohol and the cold-rolling waste emulsion are added respectively and the obtained material is stirred. The weight of the 2-octyl alcohol used for flotation is 90g to 110g per ton of the coal slime and the amount of the cold-rolling waste emulsion used for flotation is 6,000ml to 6,500ml per ton of the coal slime. By adopting the cold-rolling waste emulsion to substitute diesel oil to carry out the coal slime flotation, the application of the invention not only can greatly reduce the diesel oil consumption and the production cost, but also can carry out no extra treatments to the cold-rolling waste emulsion, thereby changing the cold-rolling waste emulsion into valuable and making full use of matters.
Description
Technical field
The present invention relates to the application of cold rolling waste emulsified mixture in coal slurry flotation that steel rolling mill produces.
Background technology
The coal washery produces in the coal washing process contains granularity and is called coal slime less than the water-containing materials of 0.5mm coal dust, still contains more cleaned coal in the coal slime, but the content of ashes height needs further to handle, to improve the cyclic utilization rate of clean coal yield and black water.Handle coal slime at present and mostly adopt floatation, do collecting agent with diesel oil, secondary octanol is done foaming agent, and flotation device adopts jet-propelled or inflatable, and flotation froth becomes head coal product after filtration.Its weak point is big with diesel oil coal slurry flotation diesel-fuel consumption, and production cost is too high.And cold rolling waste emulsified mixture is the industrial wastewater that steel rolling mill's cold-rolling process produces, domestic general use emulsion treatment facility, adopt medicine breakdown of emulsion, cohesion, floating going up to separate, main oil emulsion is removed in the chemical demulsification groove, floating through electrolysis electricity again, filtration, charcoal absorption are purified emulsifying liquid waste water.The emulsion treatment facility is made up of supply unit, chemical demulsification groove, electrolysis unit, electric floating trough, filterability carbon column and water pump.Cold rolling waste emulsified mixture is carried out special disposal, and not only investment cost is big, and the operating cost height.Therefore, exploration, research are carried out coal slime flotation with cold rolling waste emulsified mixture replacement diesel oil and are had crucial meaning.
Summary of the invention
The object of the present invention is to provide the application of a kind of cold rolling waste emulsified mixture in coal slurry flotation, utilize cold rolling waste emulsified mixture to replace diesel oil to carry out coal slime flotation, not only can greatly reduce diesel consumption, reduce production costs, and need not carry out extra process to cold rolling waste emulsified mixture in addition again, cold rolling waste emulsified mixture is turned waste into wealth, make the best use of everything.
The object of the present invention is achieved like this: the application of cold rolling waste emulsified mixture in coal slurry flotation, comprise and adopt flotation device to carry out coal slime flotation, make foaming agent with secondary octanol, the floatation concentration of at first adjusting coal slime during flotation is 10%-20%, adding secondary octanol and cold rolling waste emulsified mixture then respectively also stirs simultaneously, the weight of the used secondary octanol of flotation coal slime per ton is 90-110g, and the amount of the used cold rolling waste emulsified mixture of flotation coal slime per ton is 6000-6500ml.
The optimum weight of the used secondary octanol of flotation coal slime per ton is 100g, and the optimised quantity of the used cold rolling waste emulsified mixture of flotation coal slime per ton is 6250ml.
Coal slime flotation technology is maturation process, and substituting diesel oil coal slurry flotation main purpose with cold rolling waste emulsified mixture is twice laid, to reduce production costs.
Because oily total content reaches 2.5-3.8% in the cold-rolling emulsion stoste, also can sneak into some used oil, hydraulic pressure wet goods in the waste emulsified mixture, therefore has the possibility of alternative diesel oil coal slurry flotation.Through overtesting, adopt 1 liter of pneumatic flotation cell of XFD type single-channel type, Fukang, Xinjiang, Ai Weier ditch 2130,1,930 three kinds of coal slimes of Ai Weier ditch have been carried out float test, all obtained gratifying result, be shown in the following table.
Table 1 cold rolling waste emulsified mixture performance
| Project | Unit | The scope of application | Limiting value |
| Oil total content pH value conductibility iron content chlorinity saponification number soap iron content free fatty (oleic acid) | ％ μs/cm mg/L mg/L mg(KOH)/g mg/L ％ | 2.5-3.8 6-7.5 ＜300 ＜200 ＜20 ＜35 ＜80 1.5-4 | 0.8-7 5.5-8 500 400 30 45 100 4.5 |
Oily total content reaches 2.5-3.8% in the cold-rolling emulsion stoste, therefore has the possibility of alternative diesel oil coal slurry flotation.
Table 2 carries out the comparative test result of coal slurry flotation respectively with cold rolling waste emulsified mixture and diesel oil
The contrast of table 3 floatation clean coal index
See that by table 3 floatation clean coal index comparing result do collecting agent with waste emulsified mixture, Fukang coal slime flotation clean coal yield is higher, reaches 91.08%, reaches the requirement index.Chinese mugwort ore deposit 2130 floatation clean coal indexs are close, and Chinese mugwort ore deposit 1930 cleans ash indexs are better, and productive rate is low slightly.On the whole, do the coal separation collecting agent with waste emulsified mixture, effect is fairly obvious, can substitute diesel oil fully.
Through test, use 150m
3Waste emulsified mixture is handled more than 24000 ton of coal slime, has saved 4.32 tons of diesel oil, has saved 21.6 ten thousand yuan, and economic benefit is considerable.Therefore, utilize cold rolling waste emulsified mixture to replace diesel oil to carry out coal slime flotation, not only can reduce diesel consumption greatly, reduce production costs, and need not carry out extra process to cold rolling waste emulsified mixture in addition again, and cold rolling waste emulsified mixture is turned waste into wealth, make the best use of everything, help the industry energy conservation consumption reduction, increase income and economize on spending.
The specific embodiment
Embodiment 1:
The application of cold rolling waste emulsified mixture in coal slurry flotation, comprise and adopt flotation device to carry out coal slime flotation, make foaming agent with secondary octanol, the floatation concentration of at first adjusting coal slime during flotation is 10%, adding secondary octanol and cold rolling waste emulsified mixture then respectively also stirs simultaneously, the weight of the used secondary octanol of flotation coal slime per ton is 110g, and the amount of the used cold rolling waste emulsified mixture of flotation coal slime per ton is 6500ml.
Embodiment 2:
The application of cold rolling waste emulsified mixture in coal slurry flotation, comprise and adopt flotation device to carry out coal slime flotation, make foaming agent with secondary octanol, the floatation concentration of at first adjusting coal slime during flotation is 15%, the weight of the used secondary octanol of flotation coal slime per ton is 100g, and the amount of the used cold rolling waste emulsified mixture of flotation coal slime per ton is 6250ml.
Embodiment 3:
The application of cold rolling waste emulsified mixture in coal slurry flotation, comprise and adopt flotation device to carry out coal slime flotation, make foaming agent with secondary octanol, the floatation concentration of at first adjusting coal slime during flotation is 20%, the weight of the used secondary octanol of flotation coal slime per ton is 90g, and the amount of the used cold rolling waste emulsified mixture of flotation coal slime per ton is 6000ml.
When flotation, should guarantee long as far as possible flotation time, so that improve the effect of coal slurry flotation.Facts have proved that flotation time will keep 6 minutes at least.
Claims (3)
1, the application of cold rolling waste emulsified mixture in coal slurry flotation, comprise and adopt flotation device to carry out coal slime flotation, make foaming agent with secondary octanol, it is characterized in that: the floatation concentration of at first adjusting coal slime during flotation is 10%-20%, adding secondary octanol and cold rolling waste emulsified mixture then respectively also stirs simultaneously, the weight of the used secondary octanol of flotation coal slime per ton is 90-110g, and the amount of the used cold rolling waste emulsified mixture of flotation coal slime per ton is 6000-65 00ml.
2, the application of cold rolling waste emulsified mixture according to claim 1 in coal slurry flotation, it is characterized in that: the floatation concentration of at first adjusting coal slime during flotation is 15%, the weight of the used secondary octanol of flotation coal slime per ton is 100g, and the amount of the used cold rolling waste emulsified mixture of flotation coal slime per ton is 6250ml.
3, the application of cold rolling waste emulsified mixture according to claim 1 and 2 in coal slurry flotation is characterized in that: flotation time will keep 6 minutes at least.
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2007101127921A CN101322959A (en) | 2007-06-16 | 2007-06-16 | Use of cold rolling waste emulsified mixture in coal slurry flotation |
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| CNA2007101127921A CN101322959A (en) | 2007-06-16 | 2007-06-16 | Use of cold rolling waste emulsified mixture in coal slurry flotation |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101823025A (en) * | 2010-04-01 | 2010-09-08 | 西安科技大学 | Coal flotation agent and preparation method thereof |
| CN102974468A (en) * | 2011-09-06 | 2013-03-20 | 陕西长大石油化工产品有限公司 | Non-ferrous metal mineral flotation agent |
| CN103143449A (en) * | 2013-02-28 | 2013-06-12 | 太原理工大学 | Method for realizing flotation of coal slime with use of oxidized kerosene |
| CN103372501A (en) * | 2012-04-13 | 2013-10-30 | 陕西长大石油化工产品有限公司 | Molybdenite floatation collector |
| CN108187915A (en) * | 2017-12-11 | 2018-06-22 | 新疆八钢铁股份有限公司 | With the method for cold rolling waste emulsified mixture coal slurry flotation |
| CN109604069A (en) * | 2018-11-20 | 2019-04-12 | 朱计平 | A kind of coal flotation agent |
| CN110976075A (en) * | 2019-12-20 | 2020-04-10 | 郑州大学 | Method for extracting carbon and reducing ash by coarse grain tailing discarding and fine grain flotation of gasified slag |
| CN112742608A (en) * | 2020-12-29 | 2021-05-04 | 四川安宁铁钛股份有限公司 | Flotation method and device for ilmenite flotation by using waste engine oil |
-
2007
- 2007-06-16 CN CNA2007101127921A patent/CN101322959A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101823025A (en) * | 2010-04-01 | 2010-09-08 | 西安科技大学 | Coal flotation agent and preparation method thereof |
| CN101823025B (en) * | 2010-04-01 | 2013-02-13 | 西安科技大学 | Coal flotation agent and preparation method thereof |
| CN102974468A (en) * | 2011-09-06 | 2013-03-20 | 陕西长大石油化工产品有限公司 | Non-ferrous metal mineral flotation agent |
| CN103372501A (en) * | 2012-04-13 | 2013-10-30 | 陕西长大石油化工产品有限公司 | Molybdenite floatation collector |
| CN103143449A (en) * | 2013-02-28 | 2013-06-12 | 太原理工大学 | Method for realizing flotation of coal slime with use of oxidized kerosene |
| CN103143449B (en) * | 2013-02-28 | 2014-05-28 | 太原理工大学 | Method for realizing flotation of coal slime with use of oxidized kerosene |
| CN108187915A (en) * | 2017-12-11 | 2018-06-22 | 新疆八钢铁股份有限公司 | With the method for cold rolling waste emulsified mixture coal slurry flotation |
| CN109604069A (en) * | 2018-11-20 | 2019-04-12 | 朱计平 | A kind of coal flotation agent |
| CN110976075A (en) * | 2019-12-20 | 2020-04-10 | 郑州大学 | Method for extracting carbon and reducing ash by coarse grain tailing discarding and fine grain flotation of gasified slag |
| CN110976075B (en) * | 2019-12-20 | 2021-11-26 | 郑州大学 | Method for extracting carbon and reducing ash by coarse grain tailing discarding and fine grain flotation of gasified slag |
| CN112742608A (en) * | 2020-12-29 | 2021-05-04 | 四川安宁铁钛股份有限公司 | Flotation method and device for ilmenite flotation by using waste engine oil |
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Open date: 20081217 |