Preparation method for autoclaved aerated concrete block

A concrete block, autoclaved gas filling technology, applied in ceramic products, climate sustainability, sustainable waste treatment, etc., can solve the problem of low product strength, achieve good pore structure, high block strength, and ensure production The effect of stability

Active Publication Date: 2014-10-08
WUHAN HUA YUANFENG BUILDING MATERIALS
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Problems solved by technology

[0008] In view of the defects existing in the prior art, the purpose of the present invention is to provide a production process plan using "fluorite ore tailings" as the main material, improve the strength of the product, and solve technical problems such as low product strength

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  • Preparation method for autoclaved aerated concrete block

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Embodiment Construction

[0030] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0031] The preparation method of autoclaved aerated concrete block of the present invention, its steps are as follows:

[0032] Step S1. The fluorite ore tailings are ball milled, and after the ball milling is completed, a mortar with a specific gravity of 1.6kg / L is prepared; the concentration of the prepared mortar reaches 58%.

[0033] Step S2. Add 320kg of lime, 300kg of cement, and 2.15kg of aluminum powder into the mortar with a specific gravity of 1.6kg / L for stirring.

[0034] Step S3. Pour the uniformly stirred mixture into a mold frame for casting, and form a green body through gas generation of aluminum powder.

[0035] Step S4. The molded green body is placed in a constant temperature environment for curing.

[0036] Step S5. After the green body reaches the hardness requirement, the green body is flipped and demoulded by 90...

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Abstract

A preparation method for an autoclaved aerated concrete block comprises: performing ball milling on fluorite mine tailings, and preparing mortar with the specific gravity of 1.6 Kg/L after ball milling is finished; adding 320 Kg of lime, 300 Kg of cement and 2.15 Kg of aluminium powder into the mortar with the specific weight of 1.6 Kg/L and stirring; pouring uniformly-stirred mixture into a mold frame for casting, and forming a blank through gas-generation molding of aluminium powder; putting the molded blank in a constant-temperature environment for maintenance; performing 90 DEG overturn demolding when the blank reaches the hardness requirement; and cutting the demolded blank, and performing steaming curing processing, so as to obtain the finished product autoclaved aerated concrete block. The preparation method is beneficial for accounting the formula and helps to accurately calculate out the product unit weight needed by production; and low-temperature casting is performed during production, so that the production stability is guaranteed, and also the pores in the product is uniform in size and independent enclosed pores are formed, the pore structure is good, and the block strength is higher than that of a block produced by using a common technology.

Description

technical field [0001] The invention relates to a building material and a preparation method thereof, in particular to an autoclaved aerated concrete block. Background technique [0002] As we all know, the existing "autoclaved aerated concrete block" has a low silicon content in the siliceous material, so the strength of the product is greatly affected. The "Wall Reconstruction Office" of the State Council and relevant ministries and commissions issued successively, stipulating that the use of solid clay bricks in frame structures is prohibited; and support the development of waste-free non-load-bearing blocks and various lightweight blocks. However, due to defects such as autoclaved aerated fly ash (blocks) and some indicators not up to standard, it has not been favored by the market. [0003] Usually, more and more people choose fluorite ore tailings in autoclaved gas filling. Fluorite ore tailings contain a large amount of calcite, dolomite, limestone, pyrophyllite, cla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/02C04B28/10C04B18/12
CPCY02W30/91
Inventor 余明
Owner WUHAN HUA YUANFENG BUILDING MATERIALS
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