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Composite coal-dressing flotation reagent and preparation method thereof

A flotation reagent and coal preparation technology, applied in flotation, solid separation and other directions, can solve the problems of weak flotation performance, cumbersome operation procedures, large dosage of reagents, etc., to overcome poor stability, simplify technological process, The effect of reducing the dosage of the drug

Active Publication Date: 2014-08-06
ANHUI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a compound coal preparation flotation agent and its preparation method, which can solve the problems of poor flotation performance, large dosage of agents and cumbersome operation procedures of general coal preparation flotation agents

Method used

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  • Composite coal-dressing flotation reagent and preparation method thereof
  • Composite coal-dressing flotation reagent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The composite coal preparation flotation agent is composed of 50% light diesel oil, 0.5% sodium lauryl sulfate, 0.4% alkyl glycoside, 3% alkylphenol polyoxyethylene ether and 46% water by mass percentage. Sodium lauryl sulfate, alkyl glucoside, and alkylphenol polyoxyethylene ether were configured into aqueous solutions with mass fractions of 5%, 10%, and 20%, respectively, and then 25mL of light diesel oil was added to the reaction vessel, and magnetically Add 5mL sodium lauryl sulfate, 2.5mL alkyl glucoside and 7.5mL alkylphenol polyoxyethylene ether under the condition of stirring. After stirring for 5 minutes, use a high-speed cutting emulsifier to emulsify at a working speed of 3000r / min for 10 minutes to obtain Milky white water-soluble compound coal preparation flotation agent.

[0019] The composite coal preparation flotation agent prepared in this example was left to stand naturally at room temperature for 24 hours, and was shaken and shaken in due course to ob...

Embodiment 2

[0022] The composite coal preparation flotation agent is composed of 65% light diesel oil, 0.5% sodium lauryl sulfate, 0.6% alkyl glycoside, 4% alkylphenol polyoxyethylene ether and 40% water by mass percentage. Sodium lauryl sulfate, alkyl glucoside, and alkylphenol polyoxyethylene ether were respectively configured into aqueous solutions with a mass fraction of 5%, 10% and 20%, and then 32.5mL of light diesel oil was added to the reaction vessel, and heated at room temperature Under the condition of magnetic stirring, add 5mL sodium lauryl sulfate, 3mL alkyl glucoside and 10mL alkylphenol polyoxyethylene ether, after stirring for 5min, use a high-speed cutting emulsifier to emulsify at a working speed of 2000r / min for 20min to obtain milky white Water-soluble composite coal preparation flotation agent.

[0023] The composite coal preparation flotation agent prepared in this example has good stability at room temperature. The yield of clean coal in flotation experiments is 34...

Embodiment 3

[0025] The composite coal preparation flotation agent consists of 55% light diesel oil, 0.4% sodium lauryl sulfate, 0.5% alkyl glycoside, 4% alkylphenol polyoxyethylene ether and 40.1% water by mass percentage. Sodium lauryl sulfate, alkyl glucoside, and alkylphenol polyoxyethylene ether were respectively configured into aqueous solutions with a mass fraction of 5%, 10% and 20%, and then 27.5mL of light diesel oil was added to the reaction vessel, and heated at room temperature Under the condition of magnetic stirring, add 4mL sodium lauryl sulfate, 2.5mL alkyl glycoside and 10mL alkylphenol polyoxyethylene ether, after stirring for 5min, use a high-speed cutting emulsifier to emulsify at a working speed of 2500r / min for 15min to obtain Milky white water-soluble compound coal preparation flotation agent.

[0026] The composite coal preparation flotation agent prepared in this example has good stability at room temperature. The yield of clean coal in flotation experiments is 26...

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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

technical field [0001] The invention belongs to the field of flotation agent synthesis, and in particular relates to a compound coal preparation flotation agent in the coal washing process and a preparation method thereof. Background technique [0002] Flotation is an effective means of fine-grained coal separation. The flotation process of coal preparation is an extremely complex physical, chemical and hydrodynamic process. The selection and use of flotation reagents are important factors affecting the flotation effect of coal preparation. At present, the flotation reagents commonly used in coal preparation plants at home and abroad mainly include collectors and foaming agents, as well as some auxiliary chemicals, such as inhibitors and flocculants. Collectors are mostly kerosene and light diesel oil, accounting for about 80% to 90%. However, this kind of flotation agent generally has the problem of excessive chemical consumption. For coking coal with a large content of f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/012B03D101/02B03D101/04
CPCB03D1/012B03D2201/02B03D2201/04B03D2203/08
Inventor 王艳芬徐初阳马诚程详邱宁聂荣春周欢欢陈理
Owner ANHUI UNIV OF SCI & TECH
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