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A kind of charcoal flotation agent and its application and method for extracting charcoal by fly ash flotation

A technology of flotation agent and fly ash, which is applied in flotation, solid separation, etc., can solve the problems of poor carbon flotation effect and complicated preparation process of carbon flotation agent, so as to improve the sedimentation performance, improve the comprehensive utilization value, The effect of rational use of resources

Active Publication Date: 2019-09-13
CHNA ENERGY INVESTMENT CORP LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a kind of charcoal flotation agent in order to overcome the defect that the charcoal flotation effect is poor and the preparation process of the charcoal flotation agent is relatively complicated in the prior art, and the charcoal flotation agent can be used in fly ash flotation to extract carbon The application and the method of fly ash flotation to extract carbon

Method used

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preparation example Construction

[0021] The preparation method of the carbon flotation agent of the present invention may include: mixing an oil-based collector, an inhibitor, an activator and a foaming agent.

[0022] In the second aspect, the present invention provides the application of the above-mentioned charcoal flotation agent in fly ash flotation charcoal extraction.

[0023] Those skilled in the art know that the process of extracting carbon by fly ash flotation can include roughing and refining successively, using the carbon flotation agent obtained in roughing, and only needing to use the inhibitor in the charcoal flotation agent in the refining. Can.

[0024] In the present invention, the fly ash is conventional fly ash collected from the flue of a circulating fluidized bed combustion boiler in the field, and its carbon content may be 5-30% by weight.

[0025] In the present invention, the method for the flotation of fly ash to extract carbon can be a conventional method in the art, for example, ...

Embodiment 1

[0036] This embodiment is used to illustrate the charcoal flotation agent of the present invention and its application and the method for extracting charcoal by fly ash flotation.

[0037] (1) Mix 70% by weight of diesel oil, 10% by weight of inhibitor (composed of citric acid and oxalic acid, the weight ratio is 1:0.5), 10% by weight of sodium polyacrylate (molecular weight is 2000)) and 10% by weight of terpineol oil Uniform;

[0038] (2) Take by weighing 200g fly ash (charcoal content is 10%), mix with 600ml25% by weight hydrochloric acid solution after the fly ash particle is pulverized and carry out leaching reaction, and leaching temperature is 150 ℃, and leaching time is 120min , after the leaching reaction is finished, filter the slurry, dry the filter cake at 120°C for 12 hours, mix the dried white mud filter cake with water to make a 100g / l slurry, then pour it into the flotation machine, After stirring for 5min, add the charcoal flotation agent prepared above, the ...

Embodiment 2

[0040] This embodiment is used to illustrate the charcoal flotation agent of the present invention and its application and the method for extracting charcoal by fly ash flotation.

[0041] (1) Mix 65% by weight of diesel oil, 10% by weight of inhibitor (composed of citric acid and oxalic acid, the weight ratio is 1:1), 15% by weight of polyacrylic acid (molecular weight is 130000) and 10% by weight of terpineol oil;

[0042] (2) Take by weighing 200g fly ash (the carbon content is 15%), after the fly ash particle is ground, mix with 800ml15% by weight hydrochloric acid solution and carry out leaching reaction, and leaching temperature is 150 ℃, and leaching time is 90min , after the leaching reaction is finished, filter the slurry, dry the filter cake at 120°C for 12 hours, mix the dried white mud filter cake with water to make a 150g / l slurry, then pour it into the flotation machine, After stirring for 5min, add the charcoal flotation agent prepared above, the consumption of ...

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PUM

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Abstract

The invention relates to a charcoal floating agent. The charcoal floating agent comprises an oil-base collecting agent, an inhibitor, an activator and a foaming agent, wherein the inhibitor is citric acid and / or citric acid; the activator is a polypropylene acid material; the content of the oil-base collecting agent is 50-80 weight parts; the content of the inhibitor is 5-15 weight parts; the content of the activator is 5-20 weight parts; and the content of the foaming agent is 5-15 weight parts. The invention further relates to application of the charcoal floating agent in flyash floating charcoal extraction, and a flyash floating charcoal extracting method. After the charcoal floating agent is used for floating of flyash or lime mud, the floating rate of unburned charcoal is 95% or above, concentrated charcoal has certain economic value after floating, the ignition loss can reach 80% or above, and the concentrated charcoal can serve as raw materials for preparing secondary fuel, rubber reinforcing filler, carbon black and activated carbon.

Description

technical field [0001] The invention relates to the field of fly ash flotation, in particular to a charcoal flotation agent, the application of the charcoal flotation agent in fly ash flotation charcoal extraction and a method for fly ash flotation charcoal extraction. Background technique [0002] After the coal is completely burned, the combustible part of the coal burns to release heat, the water in the coal evaporates, and the remaining part is the minerals of the coal, which are the ash formed by the oxides and salts of metals and nonmetals. China uses coal as the main energy source, and the coal consumption for electric power reaches more than 400 million tons every year. In 1997, the country produced more than 100 million tons of fly ash, becoming the world's largest ash discharge country, causing serious environmental pollution and occupying a large amount of land. . [0003] In addition, white mud is the residue of fly ash acid leaching alumina process, and its che...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/004B03D101/06B03D101/02B03D101/04B03D103/08
Inventor 王晓欢王宝冬孙琦郭昭华
Owner CHNA ENERGY INVESTMENT CORP LTD