Method for preparing coaly activated carbon by using fly ash or slag ash

A technology of coal-based activated carbon and fly ash, applied in chemical instruments and methods, inorganic chemistry, non-metallic elements, etc., can solve the problems of large discharge, no utilization, and environmental hazards of the atmosphere, and achieve low production costs and save The effect of simple energy and process flow

Active Publication Date: 2014-03-12
盐城瑞鹤化纤有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, this kind of waste residue is widely distributed in my country, and the utilization amount is far less than the discharge amount. When it is disposed of and piled up, sulfur-containing gas can be released to pollute the atmosphere and endanger the environment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Send the slag with a carbon content greater than 5% to the Raymond mill or ball mill with a chain elevator, and grind it to 80-300 mesh to form slag ash, and use a belt conveyor or screw conveyor or wind Conveyor sent to slurry preparer with agitator;

[0033] (2) The 80-300-mesh fly ash with a carbon content greater than 3% can be used directly after removing large particles of impurities greater than 1mm.

[0034] Send it to the pulp preparer with agitator by belt conveyor, screw conveyor or wind conveyor;

[0035] (3) In the slurry preparation device, adjust the 80-300 mesh fly ash or slag ash with water to form a mortar with a concentration of 10-30%, mix it with the flotation agent, and stir evenly; Foam trap composite coal flotation agent

[0036] (4) Pump the slurry into the vacuum high-efficiency flotation machine for flotation. Under the vacuum force of the vacuum flotation machine, the foaming agent in the flotation reagent will generate a large number o...

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PUM

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Abstract

The invention relates to a method for preparing coaly activated carbon by using fly ash or slag ash. The method disclosed by the invention is implemented by carrying out floatation on solid carbon in fly ash or slag ash by using a method implemented by using a flotation reagent, and activating the solid carbon. According to the method disclosed by the invention, a high-technical-content activate carbon product can be obtained from fly ash and slag resources, the technological process is simple, the energy is saved, and the production cost is low. Meanwhile, low-quality fly ash and slag ash can become high-quality fly ash and slag ash products, so that fly ash or slag ash can be widely used as mineral admixture of cement, concrete and mortar, and high-quality raw materials of wall construction materials and silicate products.

Description

technical field [0001] The invention relates to a method for preparing coal-based activated carbon, in particular to a method for preparing coal-based activated carbon from fly ash or slag ash. Background technique [0002] Coal-based activated carbon is a functional carbon material with special microcrystalline structure, developed pores, large specific surface area and strong adsorption capacity. It has been widely used in environmental protection engineering fields such as water supply, sewage treatment, and air purification. At the same time, coal-based activated carbon, as an excellent adsorbent, catalyst and catalyst carrier, is also widely used in sugar production, medicine, food, chemical industry, national defense, agriculture and people's basic necessities of life. [0003] The traditional coal-based activated carbon is made of selected high-quality anthracite through various processes such as coal powder preparation, carbonization treatment, activation treatmen...

Claims

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Application Information

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IPC IPC(8): C01B31/10C01B32/336
Inventor 蒋宏伟蒋轶军
Owner 盐城瑞鹤化纤有限公司
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