CN106964494A - A kind of low-cost high-efficiency flotation agent for coal slurry - Google Patents

A kind of low-cost high-efficiency flotation agent for coal slurry Download PDF

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Publication number
CN106964494A
CN106964494A CN201710346780.9A CN201710346780A CN106964494A CN 106964494 A CN106964494 A CN 106964494A CN 201710346780 A CN201710346780 A CN 201710346780A CN 106964494 A CN106964494 A CN 106964494A
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CN
China
Prior art keywords
coal
flotation
cost
flotation agent
coal slurry
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Application number
CN201710346780.9A
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Chinese (zh)
Inventor
谭俊华
许晋华
朱开金
胡佩
许逸飞
朱鹏宇
赵彦亮
刘菲
Original Assignee
太原工业学院
山西中阳实业有限公司
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Application filed by 太原工业学院, 山西中阳实业有限公司 filed Critical 太原工业学院
Priority to CN201710346780.9A priority Critical patent/CN106964494A/en
Publication of CN106964494A publication Critical patent/CN106964494A/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03DFLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00Flotation
    • B03D1/001Flotation agents
    • B03D1/018Mixtures of inorganic and organic compounds
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03DFLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D2201/00Specified effects produced by the flotation agents
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03DFLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D2201/00Specified effects produced by the flotation agents
    • B03D2201/02Collectors
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03DFLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D2201/00Specified effects produced by the flotation agents
    • B03D2201/06Depressants

Abstract

The invention belongs to coal slime flotation technical field, in order to solve existing flotation agent for coal slurry cost height, somewhat expensive, there is provided a kind of low-cost high-efficiency flotation agent for coal slurry for the problems such as flotation effect is poor.As regulator, lime or zinc sulfate make inhibitor by waste plastics refining oil, beer fermentation accessory substance fusel oil, sodium metasilicate, lime or calcium bisulfate and be mixed with by a certain percentage to form.The production cost of flotation agent is reduced, flotation effect increases.1 ton of coal slime of flotation need to consume the total consumption of this flotation agent for coal slurry in 1.3 1.7kg, the flotation of be particularly suitable for use in rich coal suitable with usual flotation agent consumption.Cleaned coal flotation rate 89.3% 90.5%;Ash 6.1 ~ 8.7% in cleaned coal;Ash 42% ~ 43.4% in tail coal.Flotation agent for coal slurry cost of the present invention is about the 2/3 of usual flotation agent for coal slurry cost, reduces cost nearly 1/3, can save considerable use cost, remarkable in economical benefits.

Description

A kind of low-cost high-efficiency flotation agent for coal slurry
Technical field
The invention belongs to coal slime flotation technical field, and in particular to a kind of low-cost high-efficiency flotation agent for coal slurry.
Background technology
Flotation is due to the surface property differences of different solid minerals, and liquids and gases in ore pulp are acted on not by them Sorting is realized together.Some mineral are hydrophobic, close gas, can be adhered on bubble, and concentrate is turned into foam, other are hydrophilic, The mineral for dredging gas are then got along well bubble adhesion, and staying in turns into mine tailing in ore pulp.The surface property differences of flotation Minerals mainly by Caused by different the Nomenclature Composition and Structure of Complexes in solid, because flotation includes the process of solid, liquid, gas this phase systems, so again with liquid phase and The property of gas phase is closely related.
Coal slime flotation is the difference with spoil surface wettability by coal, and the process of separation is realized in boundary.Due to coal It can not be efficiently separated with the difference of spoil self-faced property, generally require to add floating agent in floatation process to change coal The hydrophobicity on surface, improves the floatability of coal, realizes efficiently separating for coal and spoil.
Floating agent mainly includes collecting agent, foaming agent and regulator, the flotation being widely used both at home and abroad at present Medicament kind is various, but there is also many problems, such as collecting agent bad dispersibility, collecting performance and selectivity are weak etc., finally influence coal Mud flotation efficiency and product quality.There is the method by diesel oil emulsification at present, improve dispersiveness of the diesel oil in water;Also have and pass through Add surfactant to be modified collecting agent, conventional foaming agents then have limited, not degradable, pollution environment of raw material etc. and asked Topic, current coal preparation plant's coal slime flotation is expensive with chemical flotation agent, and coal slime flotation cost is increased therewith, therefore develops newly low Cost, efficient flotation agent for coal slurry turn into urgent problem.
The content of the invention
The present invention is in order to solve existing flotation agent for coal slurry cost height, somewhat expensive, and there is provided one for the problems such as flotation effect is poor Plant low-cost high-efficiency flotation agent for coal slurry.
The present invention is realized by following technical scheme:A kind of low-cost high-efficiency flotation agent for coal slurry, by the original of following parts by weight Material is prepared from:Waste plastics refining oil:50-60 parts, beer fermentation accessory substance fusel oil:30-40 parts, 2-4 parts of sodium metasilicate, adjustment 3-4 parts of agent, 3-4 parts of inhibitor;The regulator is lime or calcium bisulfate;The inhibitor is lime or zinc sulfate.
Have in the raw coal mud of institute's flotation in the presence of zincblende pyrite FeS, the regulator is calcium bisulfate;It is described to suppress Agent is lime.Have in the raw coal mud of institute's flotation in the presence of ZnS, the regulator is lime;The inhibitor is zinc sulfate.
Optimum ratio is:Waste plastics refining oil:55 parts, beer fermentation accessory substance fusel oil:35 parts, 3 parts of sodium metasilicate, adjustment 3.5 parts of agent, 3.5 parts of inhibitor;The regulator is lime or calcium bisulfate;The inhibitor is lime or zinc sulfate.
The waste plastics refines oil and the ratio of beer fermentation accessory substance fusel oil is:(5-6):(3-4).
The consumption of the low-cost high-efficiency flotation agent for coal slurry is 1.3-1.7kg/t coal slimes.Consumption preferably 1.5 kg/t coals Mud.
Waste plastics refining oil:Using deep catalytic cracking technology, the catalyst used is ZrO2/ Ti, its consumption is that reactant is total The 0.01% of weight.Plastics after crushing are placed in the anaerobic high temperature gas flow more than 400 DEG C, and then make high molecular polymer point Solve as small molecule, form the liquid of natural gas and approximate crude oil.This liquid contains hydrocarbonization of gasoline, kerosene and diesel oil form Compound, wherein C4~C15Hydrocarbon content is 97.4%.Again with the way of distillation according to the difference of boiling point isolate gasoline obtain using kerosene as The miscella of main component.After separated gasoline, kerosene:Diesel oil ratio between two is 7:3, the waste plastics refining as prepared Oil.
Beer fermentation process be brewer's yeast under certain conditions, carried out using the fermentability material in wheat juice Normal activities, its product being metabolized is exactly desired product beer.Its brewing process is:First wheat malt is crushed, so After be warming up to 80 DEG C of filterings, 90-100 DEG C of filtrate is circled round precipitation after boiling, and beer ferment then will be inoculated with after Wort cooling to room temperature Mother is fermented.
The fusel oil that Beer Brewage is obtained accounts for whole proportion of by-product more than 90%, and residue is less than 10%, by residue filter Fusel oil is produced after separation.Mainly contain sec-octyl alcohol, isobutanol, positive isohexyl alcohol in fusel oil, the ratio of wherein sec-octyl alcohol accounts for 80% More than, it is that the topmost foamer of coal grain is caught in fusel oil, isobutanol, positive isohexyl alcohol frothing capacity it is also preferable.
The fusel oil obtained with process for beer production is higher than the effective content of commercially available fusel oil sec-octyl alcohol.Commercially available is miscellaneous Alcohol oil is mostly the accessory substance of oil plant, and wherein the content of sec-octyl alcohol is general between 50 ~ 60%, is obtained than process for beer production Fusel oil in sec-octyl alcohol content it is low by 20 ~ 30%, therefore its bubble efficiency not as good as the fusel oil that Beer Brewage is obtained.
The present invention refines oil using waste plastics(Remove the component after gasoline)Instead of coal(Bavin)Oil is used as flotation agent for coal slurry Collecting agent, the surface tension to change coal grain, strengthens its hydrophobicity, to expand coal slime, the difference of spoil surface floatability, table Reveal the effect of collecting coal grain.With the accessory substance fusel oil after beer fermentation(Containing isobutanol, sec-octyl alcohol, positive isohexyl alcohol etc.)Instead of Sec-octyl alcohol can promote air effectively to disperse in coal slime, be prevented in bubble uphill process as the foaming agent of flotation agent for coal slurry It merges, vanished, so as to improve the medicament of foam stability.Sodium metasilicate makees dispersant again plus a little, prevents thin ore particle aggregation, makes Be in monomer dispersion state.Lime or calcium bisulfate adjust agent, and by adjusting mash acid alkalinity, control mineral surfaces are special Property, the action condition of ore pulp chemical composition and various medicaments, improve flotation effect.Lime or zinc sulfate make inhibitor, improve Mineral hydrophily prevents mineral from being acted on collecting agent, is suppressed its floatability.Suppress pyrite with lime, use zinc sulfate Suppress zincblende.
The present invention is due to refining the accessory substance fusel oil after oil, beer fermentation from waste plastics as primary raw material, reduction The production cost of flotation agent, while flotation effect increases.1 ton of coal slime of flotation need to consume the total consumption of this flotation agent for coal slurry and exist 1.3-1.7kg, the flotation of be particularly suitable for use in rich coal suitable with usual flotation agent consumption.Its main technical performance index is:(1) Cleaned coal flotation rate 89.3%-90.5%;(2)Ash 6.1 ~ 8.7% in cleaned coal;(3)Ash 42% ~ 43.4% in tail coal.Coal slime of the present invention Flotation agent cost is about the 2/3 of usual flotation agent for coal slurry cost, reduces cost nearly 1/3.
The current market price of waste plastics refining oil is the 65 ~ 75% of kerosene price, and beer fermentation fusel oil price is Zhong Xin The 60 ~ 70% of alcohol price, the flotation agent for coal slurry cost constituted based on both is coal slime flotation used in current most coal preparation plants Nearly the 1/3 of agent cost, can save considerable use cost, remarkable in economical benefits.
Embodiment
Embodiment 1:There is zincblende pyrite FeS to deposit in a kind of low-cost high-efficiency flotation agent for coal slurry, the raw coal mud of flotation Flotation agent is prepared from by the raw material of following parts by weight:Waste plastics refining oil:50 parts, beer fermentation accessory substance fusel oil:30 Part, 2 parts of sodium metasilicate, 3 parts of calcium bisulfate, 3 parts of lime.
Wherein, waste plastics refining oil:Using deep catalytic cracking technology, the catalyst used is ZrO2/ Ti, its consumption is reaction The 0.01% of thing gross weight.Plastics after crushing are placed in the anaerobic high temperature gas flow more than 400 DEG C, and then make high molecular polymerization Thing is decomposed into small molecule, forms the liquid of natural gas and approximate crude oil.This liquid contains the carbon of gasoline, kerosene and diesel oil form Hydrogen compound, wherein C4~C15Hydrocarbon content is 97.4%.Gasoline is isolated according to the difference of boiling point with the way of distillation again to obtain with coal Oil is the miscella of main component.After separated gasoline, kerosene:Diesel oil ratio between two is 7:3, the waste plastics refining as prepared Liquefaction.
Beer fermentation process be brewer's yeast under certain conditions, carried out using the fermentability material in wheat juice Normal activities, its product being metabolized is exactly desired product beer.Its brewing process is:First wheat malt is crushed, so After be warming up to 80 DEG C of filterings, 90-100 DEG C of filtrate is circled round precipitation after boiling, and beer ferment then will be inoculated with after Wort cooling to room temperature Mother is fermented.
The fusel oil that Beer Brewage is obtained accounts for whole proportion of by-product more than 90%, and residue is less than 10%, by residue filter Fusel oil is produced after separation.Mainly contain sec-octyl alcohol, isobutanol, positive isohexyl alcohol in fusel oil, the ratio of wherein sec-octyl alcohol accounts for 80% More than, it is that the topmost foamer of coal grain is caught in fusel oil, isobutanol, positive isohexyl alcohol frothing capacity it is also preferable.With The fusel oil that process for beer production is obtained is higher than the effective content of commercially available fusel oil sec-octyl alcohol.Commercially available fusel oil is mostly The content of the accessory substance of oil plant, wherein sec-octyl alcohol is general between 50 ~ 60%, in the fusel oil obtained than process for beer production Sec-octyl alcohol content is low by 20 ~ 30%, therefore its efficiency of bubbling is not as good as the fusel oil that Beer Brewage is obtained.
Above-mentioned raw materials are mixed in proportion, stirred under normal temperature, in use, by above-mentioned low-cost high-efficiency coal slime Flotation agent adds coal slime flotation groove, then blasts forced air from flotation cell lower end, so that it may carry out flotation production to coal slime.It is described low The consumption of cost high efficiency flotation agent for coal slurry is 1.3kg/t coal slimes.
Embodiment 2:With the presence of ZnS in a kind of low-cost high-efficiency flotation agent for coal slurry, the raw coal mud of flotation, flotation agent is by such as The raw material of lower parts by weight is prepared from:Waste plastics refining oil:55 parts, beer fermentation accessory substance fusel oil:35 parts, 3 parts of sodium metasilicate, 3.5 parts of lime, 3.5 parts of zinc sulfate.Wherein the preparation method of waste plastics refining oil and beer fermentation accessory substance fusel oil with And waste plastics refining oil and beer fermentation accessory substance fusel oil described in contained compound be the same as Example 1.
Above-mentioned raw materials are mixed in proportion, stirred under normal temperature, in use, by above-mentioned low-cost high-efficiency coal slime Flotation agent adds coal slime flotation groove, then blasts forced air from flotation cell lower end, so that it may carry out flotation production to coal slime.It is described low The consumption of cost high efficiency flotation agent for coal slurry is 1.5kg/t coal slimes.
Embodiment 3:A kind of low-cost high-efficiency flotation agent for coal slurry, is prepared from by the raw material of following parts by weight:Waste plastics Refining oil:60 parts, beer fermentation accessory substance fusel oil:40 parts, 4 parts of sodium metasilicate, 4 parts of calcium bisulfate, 4 parts of zinc sulfate.It is described useless Waste plastics refining described in the preparation method and contained compound be the same as Example 1 of plastics refining oil and beer fermentation accessory substance fusel oil Liquefaction and beer fermentation accessory substance fusel oil.
Above-mentioned raw materials are mixed in proportion, stirred under normal temperature, in use, by above-mentioned low-cost high-efficiency coal slime Flotation agent adds coal slime flotation groove, then blasts forced air from flotation cell lower end, so that it may carry out flotation production to coal slime.It is described low The consumption of cost high efficiency flotation agent for coal slurry is 1.7kg/t coal slimes.
Embodiment 4:With the presence of ZnS in a kind of low-cost high-efficiency flotation agent for coal slurry, the raw coal mud of flotation, flotation agent is by such as The raw material of lower parts by weight is prepared from:Waste plastics refining oil:60 parts, beer fermentation accessory substance fusel oil:44 parts, sodium metasilicate 3.5 Part, 3 parts of lime, 4 parts of zinc sulfate.Above-mentioned raw materials are mixed in proportion, stirred under normal temperature, in use, will be above-mentioned low Cost high efficiency flotation agent for coal slurry adds coal slime flotation groove, then blasts forced air from flotation cell lower end, so that it may which coal slime is carried out Flotation is produced.The consumption of the low-cost high-efficiency flotation agent for coal slurry is 1.5kg/t coal slimes.
Experimental example 1:Certain coal preparation plant's flotation workshop is applied to using flotation agent described in the embodiment of the present invention 2, flotation results are: Ash content 42% ~ 43.4% in ash content 6.1 ~ 8.7%, tail coal in cleaned coal flotation rate 90.5%, cleaned coal in coal slime.The original flotation medicine of the station-service Agent result:Ash content 38.9 ~ 41.7% in ash content 9.2 ~ 10.7%, tail coal in cleaned coal flotation rate 84.2 ~ 87.5%, cleaned coal in coal slime.It is aobvious Flotation agent excellent effect prepared by the right present invention, better than floating agent used before the factory, and longtime running is stable.

Claims (7)

1. a kind of low-cost high-efficiency flotation agent for coal slurry, it is characterised in that:It is prepared from by the raw material of following parts by weight:Waste plastics Refining oil:50-60 parts, beer fermentation accessory substance fusel oil:30-40 parts, 2-4 parts of sodium metasilicate, 3-4 parts of regulator, inhibitor 3-4 Part;The regulator is lime or calcium bisulfate;The inhibitor is lime or zinc sulfate.
2. a kind of low-cost high-efficiency flotation agent for coal slurry according to claim 1, it is characterised in that:The regulator is sulphur Sour hydrogen calcium;The inhibitor is lime.
3. a kind of low-cost high-efficiency flotation agent for coal slurry according to claim 1, it is characterised in that:The regulator is stone Ash;The inhibitor is zinc sulfate.
4. a kind of low-cost high-efficiency flotation agent for coal slurry according to claim 1, it is characterised in that:By following parts by weight Raw material is prepared from:Waste plastics refining oil:55 parts, beer fermentation accessory substance fusel oil:35 parts, 3 parts of sodium metasilicate, regulator 3.5 Part, 3.5 parts of inhibitor;The regulator is lime or calcium bisulfate;The inhibitor is lime or zinc sulfate.
5. any one low-cost high-efficiency flotation agent for coal slurry according to Claims 1-4, it is characterised in that:It is described useless Plastics refine oil and the ratio of beer fermentation accessory substance fusel oil is:(5-6):(3-4).
6. any one low-cost high-efficiency flotation agent for coal slurry according to Claims 1-4, it is characterised in that:It is described low The consumption of cost high efficiency flotation agent for coal slurry is 1.3-1.7kg/t coal slimes.
7. a kind of low-cost high-efficiency flotation agent for coal slurry according to claim 6, it is characterised in that:The low-cost high-efficiency The consumption of rate flotation agent for coal slurry is 1.5kg/t coal slimes.
CN201710346780.9A 2017-05-17 2017-05-17 A kind of low-cost high-efficiency flotation agent for coal slurry CN106964494A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108435430A (en) * 2018-02-28 2018-08-24 山东超美清洁能源有限公司 A kind of composite floating chemical of energy conservation and environmental protection, clean and effective
CN109604069A (en) * 2018-11-20 2019-04-12 朱计平 A kind of coal flotation agent
CN109604046A (en) * 2018-11-20 2019-04-12 朱计平 A kind of coal preparation method

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CN108435430A (en) * 2018-02-28 2018-08-24 山东超美清洁能源有限公司 A kind of composite floating chemical of energy conservation and environmental protection, clean and effective
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CN109604046A (en) * 2018-11-20 2019-04-12 朱计平 A kind of coal preparation method

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