Tailing aerated concrete block and preparation method thereof

A technology of air-entrained concrete and blocks, which is applied in the direction of climate sustainability, sustainable waste treatment, solid waste management, etc. It can solve problems such as insufficient control of process parameters, difficulty in ensuring the quality of air-entrained concrete series products, and lack of raw materials. , to achieve the effect of improving quality, significant economic benefits and environmental protection value, and easy gas generation

Inactive Publication Date: 2015-03-11
贵州省工业固体废弃物综合利用(建材)工程技术研究中心 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, my country has become a big country in the preparation of this new type of building material, but due to the lack of raw materials and insufficient control of other process parameters, it is still difficult to guarantee the quality of aerated concrete series products. The exploration and research, combined with the actual experimental situation, provides a new choice for the preparation of fluorite tailings in the production process of aerated concrete series products

Method used

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  • Tailing aerated concrete block and preparation method thereof
  • Tailing aerated concrete block and preparation method thereof
  • Tailing aerated concrete block and preparation method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0050] A tailings aerated concrete block, the raw materials of which are 70kg of fluorite tailings, 17kg of lime, 4.1kg of cement, 4.2kg of gypsum, and 0.05kg of aluminum powder.

[0051] The fluorite tailings are 0.08mm powder, the powder sieve is 10%, and its specific surface area is 2800cm 2 / g.

[0052] The lime is quicklime with a fineness of 0.08mm and a sieve residue of ≤10.5%.

[0053] The preparation method of the air-entrained concrete block comprises the following steps:

[0054] (1) Raw material processing and mixing: take raw materials according to the ratio, desulfurize the gypsum, and then obtain desulfurized gypsum with a sulfur trioxide content of 44.8%; put the fluorite tailings in a pulverizer for powder, and grind them into 0.08% mm powder, the powder sieve is 10%, and its specific surface area is 2800cm 2 / g, stand-by; then under normal temperature environment, mix the desulfurized gypsum and fluorite tailings powder, and use the stirring speed of 100r / ...

Embodiment 2

[0061] A tailings aerated concrete block, the raw material components (parts by weight) are 74kg of fluorite tailings, 18kg of lime, 10kg of cement, 5.1kg of gypsum, and 0.1kg of aluminum powder.

[0062] The fluorite tailings are 0.07mm powder, the powder sieve is 20%, and its specific surface area is 3300cm 2 / g.

[0063] The lime is quicklime with a fineness of 0.08mm and a sieve residue of ≤10.5%.

[0064] The preparation method of the air-entrained concrete block comprises the following steps:

[0065] (1) Raw material processing and mixing: take raw materials according to the ratio, desulfurize the gypsum, and then obtain desulfurized gypsum with a sulfur trioxide content of 44.8%; put the fluorite tailings in a pulverizer for powder, and grind them into 0.07% mm powder, the powder sieve is 20%, and its specific surface area is 3300cm 2 / g, stand-by; then at room temperature, mix desulfurized gypsum and fluorite tailings powder, and use a stirring speed of 120r / min to...

Embodiment 3

[0072] A tailings aerated concrete block, the raw materials of which are 72kg of fluorite tailings, 17.5kg of lime, 6kg of cement, 4.6kg of gypsum, and 0.08kg of aluminum powder.

[0073] The fluorite tailings are 0.08mm powder, the powder sieve is 15%, and its specific surface area is 3000cm 2 / g.

[0074] The lime is quicklime with a fineness of 0.08mm and a sieve residue of ≤10.5%.

[0075] The preparation method of the air-entrained concrete block comprises the following steps:

[0076] (1) Raw material processing and mixing: take raw materials according to the ratio, desulfurize the gypsum, and then obtain desulfurized gypsum with a sulfur trioxide content of 44.8%; put the fluorite tailings in a pulverizer for powder, and grind them into 0.075% mm powder, the powder sieve is 15%, and its specific surface area is 3000cm 2 / g, stand-by; then at room temperature, mix desulfurized gypsum and fluorite tailings powder, and use a stirring speed of 110r / min to stir for 1.5h, ...

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Abstract

The invention relates to the technical field of concrete blocks and especially provides a tailing aerated concrete block and a preparation method thereof. In the tailing aerated concrete block, through control and adjustment of proportions among fluorite tailings, lime, cement, gypsum, aluminum powder, with combination of control of physical and chemical parameters in treatment on the raw materials, with combination of sequence in raw material mixing and with combination of control of a mixing temperature, a stirring speed and a stirring time, the lime can be directly and directionally subjected to a digestion process and a water material ratio can be controlled so that a raw material mixture is moderate in thickness, is easy to cut, is free of mould collapse and is easy and uniform in gas generation, by which a manufactured product is not liable to crack and the aerated concrete block is improved in quality. Furthermore, a thermal insulating effect and a sound insulating effect of the aerated concrete block are enhanced.

Description

technical field [0001] The invention relates to the technical field of concrete blocks, in particular to a tailing aerated concrete block and a preparation method thereof. Background technique [0002] Autoclaved aerated concrete block or concrete or brick is a new type of energy-saving wall insulation material. At present, there are production enterprises in most regions of my country, especially in the southwest region. The raw materials are mainly fly ash and other chemical materials. Waste materials are mixed with cement, lime, etc. to make slurry, and then combined with pulping, injection molding, curing and other processes to obtain; however, in some areas, due to the lack of fly ash or the tight supply of fly ash resources, coupled with the lack of natural silica sand As a result, the performance of autoclaved aerated concrete and other related products cannot be guaranteed, and it is even difficult to continue normal production, which hinders the development of this in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/10C04B18/12C04B22/04
CPCY02W30/91
Inventor 王建义白燕张雪敏贺勇宋美李云蒋韬马啸伊
Owner 贵州省工业固体废弃物综合利用(建材)工程技术研究中心
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