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Aerated building block made of red mud

A technology of aerated blocks and red mud, which is applied in the field of building materials, can solve the problems of large emissions and environmental pollution, and achieve the effects of high closed cell rate, low thermal conductivity and stable performance

Active Publication Date: 2014-03-12
HAINAN GUANGSHENG NEW BUILDING MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide an aerated block prepared from red mud. Construction waste, a huge amount of emissions, the problem of polluting the environment,

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Formula one of the present invention:

[0022] Component Formula (kg) Sodium water glass (m=1.5) 5 Slag 325 mesh 40 red mud 55 Calcium stearate 0.1 Silica fume 0.5 20% hydrogen peroxide 1.33

[0023] The preparation method is as follows:

[0024] (1) Add water glass, slag, red mud, surfactant, and foam stabilizer to the mixer, and stir at a speed of 60r / min for 10min;

[0025] (2) When mixing the slurry, add the foaming agent into the mixer, stir for 1 minute and then pour it into the mold through the pouring pump, and cure it for 1 hour at 40°C until it hardens;

[0026] (3) Cut the hardened block into the required size by cutting machine, send it into the autoclaved reaction kettle, and maintain it under 1MPa pressure for 4 hours, and the product is ready.

Embodiment 2

[0028] Formula two of the present invention:

[0029] Component Formula (kg) Potassium silicate (m=2.0) 7 Slag 100 mesh 45 red mud 47 Calcium stearate 0.1 Zinc stearate 0.2 Silica fume 1.0 50% hydrogen peroxide 1.37

[0030] The preparation method is as in Example 1.

Embodiment 3

[0032] Formula three of the present invention:

[0033] Component Formula (kg) Sodium water glass (m=2.2) 10 Slag 325 mesh 50 red mud 39 Zinc stearate 0.2 Silica fume 0.8 30% hydrogen peroxide 1.33

[0034] The preparation method is as in Example 1.

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PUM

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Abstract

The invention discloses an aerated building block made of red mud. Water glass, slag, red mud, a surfactant, a foam stabilizer and a foaming agent are used as raw materials, the raw materials are stirred, hardened and autoclaved, alkali in the red mud is used as an exciting agent for a series of reaction to make the aerated building block. The made aerated building block has uniform pore diameters of less than 0.5 mm, the pore closing rate is high, the ball shape is obvious, the water permeability is low, and the product shrinkage is small. Under the condition without a water repellent, the hydrophobicity is greatly increased. The raw materials basically come from industrial waste residues, the problem that the red mud is difficult to comprehensively utilize is solved, and the production process is environment-friendly. The made aerated building block has the advantages of fire prevention, heat resistance, light weight, low thermal conductivity coefficient and stable performance.

Description

technical field [0001] The invention relates to an aerated block prepared from red mud, which belongs to the technical field of building materials. Background technique [0002] Clay bricks and red bricks are often used as wall materials in the construction industry, but red bricks and clay bricks have the disadvantages of heavy weight and high thermal conductivity, and have been gradually replaced by aerated blocks. The aerated block is light in weight. The weight of the same volume of aerated block is equivalent to 1 / 5-1 / 3 of the red brick, and the thermal conductivity is equivalent to 20%-30% of the red brick. Calculated according to the same energy-saving effect, use The wall thickness of the aerated block masonry only needs 1 / 4 of the thickness of the red brick masonry wall. The use of aerated blocks can not only reduce the weight of the building, but also increase the indoor area of ​​the building. At present, aerated concrete blocks have become a new type of buildin...

Claims

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Application Information

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IPC IPC(8): C04B28/26C04B38/00C04B18/04
CPCY02W30/91
Inventor 刘海锋巢启程峰王新黄承好高福欣冶艳钟勤
Owner HAINAN GUANGSHENG NEW BUILDING MATERIALS