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Fly ash aerated concrete building block production process

A technology of aerated concrete and production process, applied in the direction of climate sustainability, sustainable waste treatment, solid waste management, etc., to achieve the effect of high strength, good durability and reducing environmental pollution

Inactive Publication Date: 2015-03-18
DALIAN HENGXIANG FLY ASH INTEGRATION UTILIZATION
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of fly ash collection and reuse, the invention provides a production process of fly ash aerated concrete block

Method used

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Embodiment Construction

[0012] 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.

[0013] Fly ash aerated concrete block production process of the present invention comprises the following steps:

[0014] The production process of fly ash aerated concrete block comprises the following steps:

[0015] a. The basic mix ratio is (%): cement: lime: fly ash: gypsum: aluminum powder = 7~10:15~20:65~75:3~7:0.07,...

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Abstract

The invention relates to a fly ash aerated concrete building block production process, which comprises: a, a basic matching ratio (%) of cement to lime to fly ash to gypsum to aluminum powder of 7-10:15-20:65-75:3-7:0.07, and a water-cement ratio of 0.60; b, stirring, wherein the fly ash slurry, the lime and the cement are stirred for 4 min, the gypsum is added, and then stirring is formed for 1 min; c, fixed point casting; and d, high pressure steam curing. According to the present invention, the building block produced through the fly ash aerated concrete building block production 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. Biohazard. 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 natural en...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/02C04B28/14C04B18/08
CPCY02W30/91
Inventor 马民政
Owner DALIAN HENGXIANG FLY ASH INTEGRATION UTILIZATION
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