Preparation process for red mud-containing high-intensity aerated brick

A preparation process, technology of aerated bricks, applied in ceramic products, climate sustainability, sustainable waste treatment, etc., can solve problems such as unsuitable natural soil mineral combination, complex mineral composition, etc., to reduce energy consumption and improve thermal insulation performance Good, good heat insulation and sound insulation performance

Active Publication Date: 2013-01-16
重庆博威新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its mineral composition is complex and does not c

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0020] Example 1

[0021] A preparation process of high-strength air-entrained bricks containing red mud, comprising the following steps:

[0022] (1) Mix 10kg of calcium carbonate, 2kg of blast furnace slag, 6kg of shell powder, 7kg of red mud, and 7kg of municipal inorganic waste, burn them at 650°C for 4 hours, then grind them into nano-powder, and mix in a powder equivalent to 1 % of epoxidized soybean oil and 2% of dioctyl maleate are stirred evenly, dried, and pulverized into powder to obtain modified nano-powder;

[0023] (2) Weigh carbide slag and gypsum according to the weight ratio, add an appropriate amount of water, stir and mix at 1000 rpm for 3 minutes, and grind to obtain a mixed slurry of carbide slag and gypsum, and then add the remaining raw materials required by the aerated bricks according to the weight ratio. Stir and mix at 2000rpm for 5min to obtain a mixed slurry;

[0024] The weight ratio of each raw material of the air-entrained brick is (kg):

[...

Example Embodiment

[0030] Example 2

[0031] A preparation process of high-strength air-entrained bricks containing red mud, comprising the following steps:

[0032] (1) Mix 10kg of calcium carbonate, 2kg of blast furnace slag, 6kg of shell powder, 7kg of red mud, and 7kg of municipal inorganic waste, burn them at 700°C for 5 hours, and then grind them into nano-powder, and mix in a powder equivalent to 2 % epoxidized soybean oil and 1% dioctyl maleate are uniformly stirred, dried, and pulverized into powder to obtain modified nano-powder;

[0033] (2) Weigh carbide slag and gypsum according to the weight ratio, add an appropriate amount of water, stir and mix at 1000 rpm for 3 minutes, and grind to obtain a mixed slurry of carbide slag and gypsum, and then add the remaining raw materials required by the aerated bricks according to the weight ratio. Stir and mix at 2300rpm for 5min to obtain a mixed slurry;

[0034] The weight ratio (kg) of each raw material of the air-entrained brick is:

...

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Abstract

The invention discloses a preparation process for a red mud-containing high-intensity aerated brick. The process comprises the following steps of: weighing carbide slag 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 carbide slag and gypsum mixed slurry; adding red mud-containing modified nano powder and other 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 placing the brick blank into a reaction kettle, and performing autoclaved curing, and putting in storage. The raw materials are mixed according to the optimized formula; and the intensity and the freezing resistance of the aerated 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 high-strength aerated brick containing red mud. Background technique [0002] Air-entrained concrete is widely used, mainly in wall materials, filling walls, floor and roof panels and other load-bearing wall materials in mechanical workshops and civil buildings, as well as non-load-bearing materials and filling walls around the state. [0003] Gradually, air-entrained concrete has become the leading exhibit in the building materials industry, and the country has now banned the production of clay solid bricks. It is gradually replaced by aerated concrete blocks and autoclaved bricks. However, the strength of air-entrained bricks made of conventional air-entrained concrete is generally low. [0004] Red mud is the polluting waste slag discharged when the aluminum industry extracts alumina. Generally, for every ton of alumina produced, 1.0 to...

Claims

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Application Information

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IPC IPC(8): C04B38/02C04B28/14C04B18/30
CPCY02W30/91
Inventor 晋元龙陈德全
Owner 重庆博威新材料科技有限公司
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