A kind of superfine modified fly ash production method

A production method and technology for fly ash, applied in the direction of climate sustainability, sustainable waste treatment, solid waste management, etc., which can solve the problems of slow hydration rate and reduced early strength

Active Publication Date: 2018-09-28
ANHUI GAODI BUILDING MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, fly ash is mainly used as an admixture in cement and concrete, but due to its slow hydration rate, the early strength will be significantly reduced after being mixed into cement

Method used

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  • A kind of superfine modified fly ash production method

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Embodiment 1

[0013] Embodiment 1: the present embodiment carries out as follows:

[0014] During production, first weigh 5.0kg of power plant fly ash raw powder, then add it to a drum mill with a diameter of 500mm, then add 1.5g of liquid activator to the drum mill, and grind for one hour to obtain Superfine modified fly ash, containing triethanolamine, ethylene glycol, sodium silicate, sodium sulfite, glycerol, stearic acid, sodium hexametaphosphate in the described activator, triethanolamine, The mass ratio of ethylene glycol, sodium silicate, sodium sulfite, glycerin, stearic acid and sodium hexametaphosphate is 6:5:2:1:1:1:0.5.

[0015] After testing, weigh 135g of ultra-fine modified fly ash, 315g of cement, 1350g of standard sand, and 225ml of water, put them into the mixing pot, and after the automatic mixing by the cement mortar mixer, add them to the triple trial grinding for molding, and maintain for 24 hours After demoulding, put it in water for curing for 3 days, 7 days, and 2...

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Abstract

The invention discloses a production method of superfine modified coal ash.The production method includes: weighing a certain amount of power plant coal ash raw powder, and adding the power plant coal ash raw powder into a drum mill of 500 mm in diameter; adding an activating agent, wherein a mass ratio of the activating agent to the power plant coal ash raw powder is 3:10000, and the activating agent contains triethanolamine, ethylene glycol, sodium silicate, sodium sulfite, glycerol, stearic acid and sodium hexametaphosphate according to a mass ratio of 6:5:2:1:1:1:0.5; grinding for one hour to obtain the superfine modified coal ash.The superfine modified coal ash produced by the method has regular particles and is mostly spherical, smooth in surface, large in specific surface area and higher than common coal ash in activity.

Description

technical field [0001] The invention relates to the technical field of fly ash, in particular to an ultrafine modified fly ash production method. Background technique [0002] Fly ash is a kind of pozzolan-like mixed material formed after coal powder is burned at high temperature. It is a coal-burning power plant that grinds coal into pulverized coal below 100 microns, sprays preheated air into the furnace to form a suspended state, and produces high-temperature flue gas mixed with a large amount of non-combustible matter, which is collected by a dust collection device. fly ash. The chemical composition of fly ash is similar to that of clay, and the main components are silicon dioxide, aluminum oxide, ferric oxide, calcium oxide and unburned carbon. At present, fly ash is mainly used as an admixture in cement and concrete, but due to its slow hydration rate, the early strength will be significantly reduced after being mixed into cement. Contents of the invention [0003...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B20/02C04B18/08
CPCC04B20/026C04B18/08Y02W30/91
Inventor 胡成朔高文忠梁本怀郑海波
Owner ANHUI GAODI BUILDING MATERIAL CO LTD
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