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Acidified fly ash

A technology for fly ash and pulverizing, which is applied in the field of acidified fly ash, can solve the problems of human and biological hazards, air pollution, dust generation, etc. Effect

Active Publication Date: 2014-11-05
江苏世澳非金属应用科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If a large amount of fly ash is not treated, it will generate dust and pollute the atmosphere; if it is discharged into the water system, it will cause river silting, and the toxic chemicals in it will also cause harm to humans and organisms

Method used

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Embodiment Construction

[0026] Below in conjunction with embodiment the present invention will be further described:

[0027] 1. The acidified fly ash ingredients are composed of the following components by weight percentage: acidified fly ash semi-finished product 96%, instant sodium silicate 2%, polyvinyl alcohol 1.5%, hydroxypropyl methylcellulose 0.49% and Sodium Carbonate 0.01%.

[0028] 2. The production method of the acidified fly ash: input the acidified fly ash ingredients into the mill for grinding, the particle fineness is ≤0.074 mm, and the powder after grinding is the acidified fly ash finished product.

[0029] 3. The production method of acidified fly ash semi-finished products: (1) First, input the fly ash mixture into the mixer that has been running and stir, then slowly add dilute sulfuric acid into the fly ash mixture for acidification; (2) Put the acidified powder The coal ash mixture is extruded into fly ash flakes by a roller machine, and the thickness of the fly ash flakes is ...

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Abstract

The invention discloses acidified fly ash. The main point of a technical scheme provided by the invention is that acidified fly ash ingredients comprise fly ash, attapulgite clay, magnesium oxide, sulfuric acid, fast-dissolving sodium silicate, polyvinyl alcohol, hydroxypropyl methyl cellulose and sodium carbonate. The acidified fly ash ingredients are input into a mill for milling, and powder obtained after milling is the acidified fly ash. A production method for the acidified fly ash can prevent a chemical reaction of sulfuric acid with fast-dissolving sodium silicate, polyvinyl alcohol, hydroxypropyl methyl cellulose and sodium carbonate; after acidification of fly ash, the utilization rate of fly ash can be increased, good economic benefits, environmental benefits and social benefits are obtained, and the waste is turned into the valuable. The acidified fly ash has the characteristics of good adsorptivity, thixotropy, heat stability, plasticity, caking performance and high dry-pressing strength and is applicable to production of environmental protection materials, garden materials, building materials, foaming agents and fire-fighting products.

Description

technical field [0001] The invention relates to acidification treatment, in particular to an acidified fly ash. Background technique [0002] Fly ash is the fine ash collected from the flue gas after coal combustion. Fly ash is the main solid waste discharged from coal-fired power plants. Fly ash is one of the industrial waste residues with a large discharge in my country. With the development of the power industry, the discharge of fly ash from coal-fired power plants has increased year by year. If a large amount of fly ash is not treated, it will generate dust and pollute the atmosphere; if it is discharged into the water system, it will cause river silting, and the toxic chemicals in it will also cause harm to humans and organisms. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies in the prior art and provide an acidified fly ash. [0004] The acidified fly ash ingredients consist of fly ash, attapulgite clay, magne...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09B3/00
Inventor 管永祥金白云朱玫王子臣孙华许盛英蒋文兰许庆华
Owner 江苏世澳非金属应用科技有限公司
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