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Preparation process for autoclaved curing aerated brick

An autoclave curing and preparation technology, which is applied in ceramic products, climate sustainability, sustainable waste treatment, etc., can solve the problems of low strength of aerated bricks, and achieve the goal of protecting the environment, reducing environmental pollution, and reducing energy consumption. Effect

Active Publication Date: 2013-01-16
日照百固特新型建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the strength of aerated bricks made of conventional aerated concrete is generally low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A preparation process for autoclaved aerated bricks, comprising the following steps:

[0025] (1) Mix 10kg of calcium carbonate, 5kg of ceramsite, 2kg of white corundum sand, 3kg of red mud, and 4kg of blast furnace slag, burn them at 700°C for 4 hours, grind them into nano-powder, and mix in powder equivalent to 1 % epoxy soybean oil and 2% calcium lignosulfonate were stirred evenly, dried and crushed into powder to obtain modified nanopowder;

[0026] (2) Weigh fluorite slag powder and gypsum according to the weight ratio, add an appropriate amount of water, stir and mix at 1000rpm for 3 minutes, grind to obtain a mixed slurry of fluorite slag powder and gypsum, and then add aerated bricks according to the weight ratio to prepare The rest of the required raw materials were stirred and mixed at 2000 rpm for 5 minutes to obtain a mixed slurry;

[0027] The weight ratio of each raw material of the aerated brick is (kg):

[0028] Fluorite slag powder 40, cement 10, quic...

Embodiment 2

[0034] A preparation process for autoclaved aerated bricks, comprising the following steps:

[0035] (1) Mix 12kg of calcium carbonate, 4kg of ceramsite, 1kg of white corundum sand, 3kg of red mud, and 6kg of blast furnace slag, burn them at 650°C for 5 hours, grind them into nanopowder, and mix in powder equivalent to 2 % epoxy soybean oil and 2% calcium lignosulfonate were stirred evenly, dried and crushed into powder to obtain modified nanopowder;

[0036] (2) Weigh fluorite slag powder and gypsum according to the weight ratio, add an appropriate amount of water, stir and mix at 1000rpm for 3 minutes, grind to obtain a mixed slurry of fluorite slag powder and gypsum, and then add aerated bricks according to the weight ratio to prepare The rest of the required raw materials were stirred and mixed at 2500 rpm for 5 minutes to obtain a mixed slurry;

[0037] The weight ratio (kg) of each raw material of the described aerated brick is:

[0038] Fluorite slag powder 38, cement...

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Abstract

The invention discloses a preparation process for an autoclaved curing aerated brick. The process comprises the following steps of: weighing fluorite slag powder and gypsum in a weight ratio; adding an appropriate amount of water, stirring and mixing at the speed of 700 to 1,000rpm for 2 to 3 minutes, and grinding to obtain fluorite slag powder and gypsum mixed slurry; adding the residual raw materials which are required by preparing the aerated brick in a weight ratio, stirring and mixing at the speed of 2,000 to 2,800rpm for 3 to 5 minutes; pouring the obtained mixed slurry into a mould and forming; precuring at the temperature of between 40 and 50 DEG C for 1 to 3 hours; demoulding; lifting to a cutting part and cutting to obtain a brick blank; and putting the brick blank in a reaction kettle, performing autoclaved curing and putting in storage. The raw materials are mixed according to an optimized formula; and the intensity and the freezing resistance of the brick are improved obviously.

Description

technical field [0001] The invention relates to the field of brick preparation technology, in particular to a preparation technology of autoclaved aerated bricks. Background technique [0002] Red mud is the polluting waste slag discharged when the aluminum industry extracts alumina. Generally, for every ton of alumina produced, 1.0 to 2.0 tons of red mud are incidentally produced. As the world's fourth largest producer of alumina, China discharges millions of tons of red mud every year. [0003] The mineral composition of red mud is complex, and various methods are used to analyze it, mainly including the following methods: polarizing microscope, scanning microscope, differential thermal analyzer, X-ray diffraction, chemical total analysis, infrared absorption spectroscopy and Mössbauer spectroscopy The result is that the main minerals of red mud are aragonite and calcite, with a content of 60%~65%, followed by opal, gibbsite, goethite, and the least content is titanium or...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/02C04B28/14C04B18/30C04B24/18
CPCY02W30/91
Inventor 晋元龙陈德全
Owner 日照百固特新型建材有限公司
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