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Liquid-solid compound collecting agent for coal slime flotation and preparation method thereof

A composite collector and coal slime flotation technology, applied in flotation, solid separation and other directions, can solve the problems of insufficient utilization of coal resources, waste of resources, low conversion efficiency, etc., to improve the efficiency and effect of coal slime flotation Good, low cost effect

Active Publication Date: 2019-10-01
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Coal has made a significant contribution to China's socialist construction, but in the processing and use of coal, most of the coal resources have insufficient utilization, low conversion efficiency, and serious waste of resources. In order to solve these problems, further research on coal is currently underway. Processing, improving the utilization efficiency of coal, and producing high-quality coal resources; ultra-pure coal is a new type of high value-added coal resource, which can prepare activated carbon, oil-water coal slurry and other products, and has certain market development prospects

Method used

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  • Liquid-solid compound collecting agent for coal slime flotation and preparation method thereof
  • Liquid-solid compound collecting agent for coal slime flotation and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment A1

[0018] Liquid-solid composite collector, according to the mass percentage, take 98% n-dodecane and 2% ultra-fine coal particles (size less than 1 micron), add ultra-fine coal particles to n-dodecane, ultra-fine The mixture of coal particles and conventional collectors is evenly mixed to obtain a liquid-solid composite collector.

[0019] The obtained liquid-solid composite collector was applied in Examples B1-B4.

Embodiment A2

[0021] The liquid-solid composite collector includes: 95% kerosene, 5% low-ash clean coal particles (particle size less than 1 micron) in terms of mass percentage.

Embodiment A3

[0023] The liquid-solid composite collector includes: 99.5% of diesel oil and 0.5% of low ash fraction (particle size less than 1 micron) extracted from clean coal.

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Abstract

The invention discloses a liquid-solid compound collecting agent for coal slime flotation and a preparation method thereof. The liquid-solid compound collecting agent is prepared by mixing high-floatability ultrafine coal-based particles with a liquid collecting agent in proportion, wherein the mass percentage of the ultrafine coal-based particles is 0.5-5%, and the mass percentage of the liquid collecting agent is 90-99.5%. The high-floatability ultrafine coal-based particles in the liquid-solid compound collecting agent can be adsorbed on the surfaces of floated coal particles in the flotation process, the surface hydrophobicity of the floated coal particles is improved, the efficiency of adhesion between the coal particles and bubbles can be improved, and the coal slime flotation effectis effectively improved. The liquid-solid compound collecting agent is low in cost, good in effect and capable of well improving the coal slime flotation efficiency and improving the recovery rate ofa clean coal product.

Description

technical field [0001] The invention belongs to the technical field of flotation reagents, in particular to a liquid-solid composite collector for coal slime flotation and a preparation method thereof. Background technique [0002] As my country's basic energy, coal occupies an important position. As far as the current situation is concerned, the development of the national economy and the progress of industry are inseparable from basic energy. Coal has made a significant contribution to China's socialist construction, but in the processing and use of coal, most of the coal resources have insufficient utilization, low conversion efficiency, and serious waste of resources. In order to solve these problems, further research on coal is currently underway. Processing, improving the utilization efficiency of coal, and producing high-quality coal resources; ultra-pure coal is a new type of high value-added coal resource, which can prepare activated carbon, oil-water coal slurry an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/02B03D1/16B03D1/006B03D101/02B03D103/08
CPCB03D1/02B03D1/16B03D1/006B03D2201/02B03D2203/08
Inventor 王海锋杨丹
Owner CHINA UNIV OF MINING & TECH
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