CN103962245A - Composite coal-dressing flotation reagent and preparation method thereof - Google Patents

Composite coal-dressing flotation reagent and preparation method thereof Download PDF

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Publication number
CN103962245A
CN103962245A CN201410215799.6A CN201410215799A CN103962245A CN 103962245 A CN103962245 A CN 103962245A CN 201410215799 A CN201410215799 A CN 201410215799A CN 103962245 A CN103962245 A CN 103962245A
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China
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coal
preparation
agent
reagent
present
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CN201410215799.6A
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CN103962245B (en
Inventor
王艳芬
徐初阳
马诚
程详
邱宁
聂荣春
周欢欢
陈理
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Anhui University of Science and Technology
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Anhui University of Science and Technology
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Priority to CN201410215799.6A priority Critical patent/CN103962245B/en
Priority to CN201610147439.6A priority patent/CN105817340B/en
Priority to CN201610147438.1A priority patent/CN105817339A/en
Publication of CN103962245A publication Critical patent/CN103962245A/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
    • B03D1/004Organic compounds
    • B03D1/012Organic compounds containing sulfur
    • 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
    • B03D2201/04Frothers
    • 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
    • B03D2203/00Specified materials treated by the flotation agents; specified applications
    • B03D2203/02Ores
    • B03D2203/04Non-sulfide ores
    • B03D2203/08Coal ores, fly ash or soot

Abstract

The invention discloses a composite coal-dressing flotation reagent and a preparation method of the composite coal-dressing flotation reagent. The composite coal-dressing flotation reagent is an ivory water-soluble composite coal-dressing flotation reagent which is formed in the mode that light diesel oil, lauryl sodium sulfate, alkyl glycoside, alkylphenol polyoxyethylene ether and water are mixed and subjected to emulsification treatment through a low-temperature emulsification technology. The preparation method of the composite coal-dressing flotation reagent is simple, sources of raw materials are wide, complex operation is avoided, and industrialization can be easily achieved. The composite coal-dressing flotation reagent is used for conducting flotation processing on fine-grained coal slime; compared with a single flotation reagent combination composed of alkyl glycoside and light diesel oil which are added step by step, the composite coal-dressing flotation reagent shows an enhanced coal-dressing flotation effect on fine coal with the granularity smaller than 0.5 mm and overcomes the defect that the reagent is added step by step, the dosage of the reagent is reduced, and the economic benefit is considerable.

Description

A kind of complex floatation agent for coal preparation and preparation method thereof
Technical field
The invention belongs to the synthetic field of floating agent, be specifically related to a kind of complex floatation agent for coal preparation and preparation method thereof in coal washing process.
Background technology
Flotation is the effective means of carrying out Bed for Fine Coal sorting.The floatation process of coal separation is very complicated physical chemistry and a hydrodynamics process, and the choice and operation of floating agent is the key factor that affects coal separation flotation effect.At present, the conventional floating agent of coal preparation plant mainly comprises collecting agent and foaming agent both at home and abroad, and some complementary medicaments, as inhibitor, flocculant etc.Collecting agent mostly is kerosene, light diesel fuel, accounts for 80%~90%.But this class floating agent ubiquity the excessive problem of medicine consumption, the coking coal of and low metamorphic grade more for Bed for Fine Coal content, due to its floatability and selectively poorer, flotation medicine consumes larger.In coal separation flotation, hydrocarbon-type oil consumption is generally at ton drycleaned coal 1~2kg, and along with rise of the oil price, floating agent expense also will significantly rise, thereby causes flotation cost to rise, and finally has influence on the economic benefit of coal preparation plant.Therefore,, in the relatively poor stage of China's oil resource, improving powder performance, minimizing dosing and efficient, the cheap synthetic floating agent of development of new is the inevitable development trend in flotation field.
Composite chemical for floatating is the new trend of current floating agent exploitation, and it has efficient foaming and collecting performance concurrently, have strong adaptability, flotation speed fast, easy to use, be easy to realize the features such as automatic control, as ME, ZH composite drug.But, at present can be very few for the kind of the composite floating chemical of coal separation flotation, the strong and less stable of complicated process of preparation, collecting performance, can't meet the requirement that the flotation of all kinds of coal preparation plants is produced, it is applied and be extremely restricted.Therefore, cheap, the stable performance of research cost and excellent NEW TYPE OF COMPOSITE coal separation floating agent further developing and building a resource-conserving society significant coal separation flotation field.
Summary of the invention
The object of the present invention is to provide a kind of complex floatation agent for coal preparation and preparation method thereof, solve the problem that at present general coal separation floating agent flotation performance is not strong, dosing is large, operational sequence is loaded down with trivial details.
A kind of complex floatation agent for coal preparation of the present invention and preparation method thereof, is characterized in that described complex floatation agent for coal preparation is made up of following substances in weight percentage: light diesel fuel 35-65%, lauryl sodium sulfate 0.2-1.0%, APG 0.4-0.6%, APES 4-8% and water 40-50%.
A kind of complex floatation agent for coal preparation of the present invention and preparation method thereof, the preparation method who is characterised in that described complex floatation agent for coal preparation is as follows: by lauryl sodium sulfate, APG, it is 5% that APES is configured to respectively mass fraction, 10% and 20% the aqueous solution, then light diesel fuel is added in reaction vessel, and add lauryl sodium sulfate under the condition of room temperature magnetic agitation, APES and APG, stir after 5min, utilize high-speed cutting emulsifier to carry out emulsification treatment, obtain milky Water Soluble Compound coal separation floating agent.
Complex floatation agent for coal preparation of the present invention and preparation method thereof, the working speed that is characterised in that described high-speed cutting emulsifier is 2000-3000r/min.
Complex floatation agent for coal preparation of the present invention and preparation method thereof, feature is also that described emulsification treatment temperature is 15-25 DEG C, emulsification times is 10-20min.
Complex floatation agent for coal preparation of the present invention and preparation method thereof, its feature is also that the optimum amount of described light diesel fuel is 55%.
In the formula of complex floatation agent for coal preparation of the present invention, light diesel fuel has very strong hydrophobicity and wide material sources, main harvesting adduction in composite drug; APES can use with other kinds surfactant compound and show good cooperative effect, plays emulsification; Lauryl sodium sulfate has good emulsification and frothing capacity; APG has good surface-active, foaming and foam stability energy.
In the formula of complex floatation agent for coal preparation of the present invention, the quality proportioning of described four kinds of components can require to carry out suitable adjustment according to the character of flotation coal sample and floatation indicators.
Compare with technology with existing coal separation floating agent preparation technology, beneficial effect of the present invention is:
1, the light diesel fuel that the inventive method employing hydrophobicity is strong is as collecting agent, the APG with high surface is made foaming agent, under activator and emulsifying agent synergy, obtain NEW TYPE OF COMPOSITE floating agent by low temperature emulsified technology, preparation technology is easy, do not relate to complex operations, cost is lower, utilizes industrialization promotion.
2, compared with the complex floatation agent for coal preparation that prepared by the inventive method combines (APG+light diesel fuel) with single floating agent, this composite drug is less than 0.5mm Bed for Fine Coal to granularity and has shown the flotation effect strengthening: clean coal yield improves 13-22%, cleans ash reduces 0.8-4%, the flammable body rate of recovery improves 15-35%, and flotation sophistication improves 2-10%; Dosing significantly reduces, and has avoided the defect of collecting agent and the dosing of foaming agent substep, simplification of flowsheet.
3, the complex floatation agent for coal preparation that prepared by the inventive method is compared with existing composite drug, medicament is prepared easy and wide material sources, overcome the poor defect of medicament stability, it can at room temperature keep stablizing not stratified, and has the selective and collecting ability of good medicament.
4, the complex floatation agent for coal preparation that prepared by the inventive method, can directly add the dispersion and emulsion equipment that do not need, easy to use and flexible, and consumption is less, and effect is better.
Detailed description of the invention:
Embodiment 1:
Complex floatation agent for coal preparation is that light diesel fuel 50%, lauryl sodium sulfate 0.5%, APG 0.4% and APES 3% and water 46% form by mass percent.It is 5%, 10% and 20% the aqueous solution that lauryl sodium sulfate, APG, APES are configured to respectively to mass fraction, then 25mL light diesel fuel is added in reaction vessel, and under the condition of room temperature magnetic agitation, add 5mL lauryl sodium sulfate, 2.5mL APG and 7.5mL APES, stir after 5min, utilize the working speed emulsification 10min of high-speed cutting emulsifier with 3000r/min, obtain milky Water Soluble Compound coal separation floating agent.
Complex floatation agent for coal preparation prepared by the present embodiment at room temperature leaves standstill 24h naturally, and shakes in good time and rocks, and observes whether layering of medicament, evaluates its stability.Test result shows that product of the present invention at room temperature leaves standstill and still stablizes after 24h not stratifiedly, has good stability.
Complex floatation agent for coal preparation prepared by the present embodiment carries out the detection of coal separation flotation performance.Experiment belongs to 1/3 coking coal, pan feeding ash content 32.88% by coal sample.Raw coal after fragmentation, screening, fusion and division according to " preparation method of coal sample " (GB474-1996) prepare-0.5mm coal sampling, flotation experimental technique (GB4758-84) carries out Performance Detection, pulp density 100g/L according to " coal separation laboratory unit flotation experimental technique ".Test result shows that clean coal yield reaches 18.76%, and cleans ash is 7.31%, sophistication 12.00%, the flammable body rate of recovery 15.24%.The present embodiment belongs to the preparation scheme of low ash content complex floatation agent for coal preparation.
Embodiment 2:
Complex floatation agent for coal preparation is that light diesel fuel 65%, lauryl sodium sulfate 0.5%, APG 0.6% and APES 4% and water 40% form by mass percent.It is 5%, 10% and 20% the aqueous solution that lauryl sodium sulfate, APG, APES are configured to respectively to mass fraction, then 32.5mL light diesel fuel is added in reaction vessel, and under the condition of room temperature magnetic agitation, add 5mL lauryl sodium sulfate, 3mL APG and 10mL APES, stir after 5min, utilize the working speed emulsification 20min of high-speed cutting emulsifier with 2000r/min, obtain milky Water Soluble Compound coal separation floating agent.
Complex floatation agent for coal preparation prepared by the present embodiment at room temperature has good stability, flotation experiment clean coal yield 34.16%, cleans ash 11.74%, sophistication 33%, the flammable body rate of recovery 44.92%.The present embodiment belongs to the preparation scheme of high clean coal yield complex floatation agent for coal preparation.
Embodiment 3:
Complex floatation agent for coal preparation is that light diesel fuel 55%, lauryl sodium sulfate 0.4%, APG 0.5%, APES 4% and water 40.1% form by mass percent.It is 5%, 10% and 20% the aqueous solution that lauryl sodium sulfate, APG, APES are configured to respectively to mass fraction, then 27.5mL light diesel fuel is added in reaction vessel, and under the condition of room temperature magnetic agitation, add 4mL lauryl sodium sulfate, 2.5mL APG and 10mL APES, stir after 5min, utilize the working speed emulsification 15min of high-speed cutting emulsifier with 2500r/min, obtain milky Water Soluble Compound coal separation floating agent.
Complex floatation agent for coal preparation prepared by the present embodiment at room temperature has good stability, flotation experiment clean coal yield 26.71%, cleans ash 12.64%, sophistication 24%, the flammable body rate of recovery 37.78%.The present embodiment belongs to the preparation scheme of conventional complex floatation agent for coal preparation.
Table 1-1 and 1-2 are the flotation experimental results of the complex floatation agent for coal preparation of the different dosings prepared of the present embodiment.As can be seen from the table compared with single floating agent combination (APG+light diesel fuel), in the time that dosing is identical, the clean coal yield of product of the present invention improves 13-22% than the clean coal yield of contrast medicament combination, and the body rate of recovery that cleaned coal is flammable improves 15-35%, and flotation sophistication improves 2-10%.Product of the present invention has shown the coal separation flotation effect strengthening.
The table single medicament of 1-1 and composite drug contrast consumption
Table 1-2 floating agent dosage comparative test result

Claims (5)

1. a kind of complex floatation agent for coal preparation of the present invention and preparation method thereof, is characterized in that described complex floatation agent for coal preparation is made up of the material of following mass percent: light diesel fuel 30-65%, lauryl sodium sulfate 0.4-1.0%, APG 8-10%, APES 4-7% and water 30-45%.
2. a kind of complex floatation agent for coal preparation of the present invention and preparation method thereof, the preparation method who it is characterized in that described complex floatation agent for coal preparation is as follows: by lauryl sodium sulfate, APG, it is 5% that APES is configured to respectively mass fraction, 10% and 20% the aqueous solution, then light diesel fuel is added in reaction vessel, and add lauryl sodium sulfate under the condition of room temperature magnetic agitation, APES and APG, stir after 5min, utilize high-speed cutting emulsifier to carry out emulsification treatment, obtain milky Water Soluble Compound coal separation floating agent.
3. a kind of complex floatation agent for coal preparation of the present invention according to claim 2 and preparation method thereof, the working speed that it is characterized in that described high-speed cutting emulsifier is 2000-3000r/min.
4. a kind of complex floatation agent for coal preparation of the present invention according to claim 2 and preparation method thereof, is characterized in that described emulsification treatment temperature is 15-25 DEG C, and emulsification times is 5-20min.
5. a kind of complex floatation agent for coal preparation of the present invention according to claim 2 and preparation method thereof, is characterized in that the optimum amount of described light diesel fuel is 55%.
CN201410215799.6A 2014-05-21 2014-05-21 A kind of complex floatation agent for coal preparation and preparation method thereof Active CN103962245B (en)

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CN106669959A (en) * 2016-06-20 2017-05-17 中国矿业大学 Floatation agent of fine-grain-size middlings and application of floatation agent
CN107398355A (en) * 2017-07-10 2017-11-28 江苏师范大学 A kind of new floatation frother of anionic
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
CN109201342A (en) * 2018-08-21 2019-01-15 中国神华能源股份有限公司 A kind of low-order coal coal slime flotation collector and preparation method thereof compounding acid esters ether
CN109201343A (en) * 2018-08-21 2019-01-15 中国神华能源股份有限公司 A kind of low-order coal coal slime flotation collector and preparation method thereof compounding sour ether ketone
CN109201344A (en) * 2018-08-21 2019-01-15 中国神华能源股份有限公司 Compound the low-order coal coal slime flotation collector and its preparation method and application of keto-aldehyde ether
CN109201345A (en) * 2018-08-21 2019-01-15 中国神华能源股份有限公司 Compound the low-order coal coal slime flotation collector and its preparation method and application of ester aldehyde ether
CN110605182A (en) * 2019-10-25 2019-12-24 福建三钢闽光股份有限公司 Blast furnace cloth belt dedusting ash flotation reagent and application method thereof
CN111054525A (en) * 2019-12-11 2020-04-24 鄂托克旗勇创煤业有限责任公司 Method for sorting high-ash-content fine-grain coal slime
CN111389595A (en) * 2020-04-01 2020-07-10 中国矿业大学 Preparation method and device of low-rank coal flotation reagent based on ultraviolet pretreatment

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CN104259011A (en) * 2014-09-02 2015-01-07 长沙明鹏科技有限公司 Coal compound flotation agent
CN105880031A (en) * 2016-04-06 2016-08-24 武汉理工大学 Flotation method of hydrophilic coal slime
CN105880031B (en) * 2016-04-06 2018-08-07 武汉理工大学 A kind of method of hydrophilic coal slime flotation
CN106669959A (en) * 2016-06-20 2017-05-17 中国矿业大学 Floatation agent of fine-grain-size middlings and application of floatation agent
CN107398355A (en) * 2017-07-10 2017-11-28 江苏师范大学 A kind of new floatation frother of anionic
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
CN109201344A (en) * 2018-08-21 2019-01-15 中国神华能源股份有限公司 Compound the low-order coal coal slime flotation collector and its preparation method and application of keto-aldehyde ether
CN109201343A (en) * 2018-08-21 2019-01-15 中国神华能源股份有限公司 A kind of low-order coal coal slime flotation collector and preparation method thereof compounding sour ether ketone
CN109201342A (en) * 2018-08-21 2019-01-15 中国神华能源股份有限公司 A kind of low-order coal coal slime flotation collector and preparation method thereof compounding acid esters ether
CN109201345A (en) * 2018-08-21 2019-01-15 中国神华能源股份有限公司 Compound the low-order coal coal slime flotation collector and its preparation method and application of ester aldehyde ether
CN109201344B (en) * 2018-08-21 2021-04-27 中国神华能源股份有限公司 Low-rank coal slime flotation collecting agent compounded with ketone-aldehyde ether and preparation method and application thereof
CN109201345B (en) * 2018-08-21 2021-04-27 中国神华能源股份有限公司 Ester-aldehyde-ether-compounded low-rank coal slime flotation collector and preparation method and application thereof
CN109201343B (en) * 2018-08-21 2021-04-27 中国神华能源股份有限公司 Low-rank coal slime flotation collector compounded with acid ketone ether and preparation method thereof
CN110605182A (en) * 2019-10-25 2019-12-24 福建三钢闽光股份有限公司 Blast furnace cloth belt dedusting ash flotation reagent and application method thereof
CN111054525A (en) * 2019-12-11 2020-04-24 鄂托克旗勇创煤业有限责任公司 Method for sorting high-ash-content fine-grain coal slime
CN111054525B (en) * 2019-12-11 2020-10-20 鄂托克旗勇创煤业有限责任公司 Method for sorting high-ash-content fine-grain coal slime
CN111389595A (en) * 2020-04-01 2020-07-10 中国矿业大学 Preparation method and device of low-rank coal flotation reagent based on ultraviolet pretreatment
CN111389595B (en) * 2020-04-01 2021-07-27 中国矿业大学 Preparation method and device of low-rank coal flotation reagent based on ultraviolet pretreatment

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