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Fly ash non-sintered brick pressing forming process

A technology of pressed and non-sintered bricks, applied in the direction of sustainable waste treatment, solid waste management, climate sustainability, etc., to achieve good durability, reduce environmental pollution, and high strength

Inactive Publication Date: 2015-03-18
DALIAN HENGXIANG FLY ASH INTEGRATION UTILIZATION
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of fly ash collection and reuse, the present invention provides a press molding process for producing non-sintered bricks using fly ash

Method used

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Embodiment Construction

[0011] Fly ash is a finely dispersed material. Most of them are spherical, with smooth surface and small micropores, and a small part are aggregate particles with rough surface and many corners. Therefore, fly ash particles vary in size and shape, and are used in cement, brick, concrete, lightweight concrete, aerated concrete, and aggregates. Poor quality ash can be used to pave roads, make foundations and fill materials. The building block of the present invention is a wall material formed by using fly ash, lime and gypsum as cementing materials, cinder and blast furnace slag as aggregate, stirring with water, forming by vibration and curing by steam.

[0012] The fly ash non-sintered brick pressing molding process of the present invention comprises the following steps:

[0013] a. Mix fly ash, slag, stone salt, cement and rock sand concentrate, the basic mix ratio is (%): fly ash: fly ash: slag: stone salt: cement: rock sand concentrate = 25~40 : 25~40: 20~30: 5~10: 0.1~0...

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Abstract

The invention relates to a fly ash non-sintered brick pressing forming process, which comprises: a, mixing fly ash, furnace slag, niter, cement and rocky sand crystal according to a basic matching ratio (%) of the fly ash to the furnace slag to the niter to the cement to the rocky sand crystal of 25-40:25-40:20-30:5-10:0.1-0.5; b, adding water and stirring, wherein the amount of the water for stirring is 20-30%; c, forming; and d, carrying out concrete curing. According to the present invention, the brick produced through the fly ash non-sintered brick pressing forming process has characteristics of heat resistance, heat insulation and fire retardation, is the novel thermal insulation and low temperature refrigeration heat insulation material and the ultra lightweight fire resistance raw material, is firm and durable, does not easily produce the hollow cracking phenomenon, further has characteristics of high strength and good durability, and further has effects of sound absorption, vibration reducing and wear resistance; and the fly ash is recycled so as to provide advantages of environmental pollution reducing, energy saving and environmental protection.

Description

technical field [0001] The invention relates to the technical field of fly ash processing and reuse, in particular to a production process of fly ash aerated concrete blocks. Background technique [0002] Fly ash is one of the largest industrial wastes in my country. With the development of the power industry, the discharge of fly ash from coal-fired power plants is increasing year by year. More than 90% of thermal power plants and urban central heating boilers that use pulverized coal as fuel are wet ash, which has lower activity than dry ash, consumes water and electricity, and pollutes the environment. biological hazard. More than 20 substances harmful to the environment and humans were detected in the fly ash samples, including heavy metals that can cause nervous system damage, birth defects and even cancer. According to estimates in the report, about 25,000 tons of cadmium, chromium, arsenic, mercury and lead, the five heavy metals monitored by the state, enter the na...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B18/06
CPCY02W30/91
Inventor 马民政
Owner DALIAN HENGXIANG FLY ASH INTEGRATION UTILIZATION
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