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Autoclaved aerated concrete block made of gold tailings and its production process

A technology of concrete blocks and autoclaved gas filling, applied in the direction of climate sustainability, sustainable waste treatment, solid waste management, etc., can solve the problems of excessive radioactive substances, tight supply and demand of raw materials, and endangering human health, and achieve antifreeze Strong performance, no radioactive hazard, environmental protection and radioactive hazard effect

Inactive Publication Date: 2006-09-20
QIXIA HONGJIAN NOVEL BUILDING MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The autoclaved aerated concrete block with fly ash as the main raw material has certain defects, such as: radioactive substances exceeding the standard, tight supply and demand of raw materials (due to preferential tax policies, large amount of competition in the cement production industry, etc.), poor frost resistance, masonry construction The medium cannot be well combined with the mortar, and it is easy to cause quality accidents such as wall shedding, especially radioactive pollution that seriously endangers people's health

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Example 1: gold tailings autoclaved aerated concrete block, the main raw materials are gold tailings slag, cement, quicklime and water; according to the weight percentage, the main raw material formula ingredient ratio is: gold tailings slag 60%, cement 10% , 24.95% quicklime, 0.05% aluminum powder, 5% phosphogypsum powder, and the amount of water used is enough to make the gold tailings slag grinding fine slurry concentration meet the requirements;

[0022] Gold tailings slag: chemical composition silica content of 70-90%; cement: PC32.5R calcium oxide content of more than 70%; quicklime: calcium oxide content of more than 80%.

[0023] Silica and calcium oxide are subjected to hydrothermal reaction under autoclaved curing conditions to produce new silicate materials, which have a certain strength; aluminum powder acts as a gas generator; phosphogypsum powder is produced during the hydrothermal reaction process Acts as a retarder.

[0024] The production method flow i...

Embodiment 2

[0031] Embodiment 2: The difference between the gold tailings autoclaved aerated concrete block and the production method of the present embodiment and the embodiment 1: according to the percentage by weight, the ingredients ratio of the raw material formula is: gold tailings slag 70%, cement 6%, quicklime 21.97%, 0.03% aluminum powder, 2% phosphogypsum powder, and the amount of water used is enough to make the gold tailings slag grinding slurry concentration meet the requirements.

Embodiment 3

[0032] Embodiment 3: The difference between the gold tailings autoclaved aerated concrete block of this embodiment and its production method and that of Embodiment 1: according to the percentage by weight, the ingredients of the raw material formula are as follows: 66.99% of gold tailings slag, 9% of cement, quicklime 20%, aluminum powder 0.01%, phosphogypsum powder 4%, and the amount of water used is enough to make the gold tailings slag grinding slurry concentration meet the requirements.

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Abstract

The invention relates to gold tail mine concrete block and its productive technique, which belongs to wall material for building and productive technical field. Its characteristics is that the main raw material for making concrete block includes slag, cement, burnt lime, aluminum powder and water, and their mess ratio is: slag 60~70%, cement-6~10%, burnt lime-20~30% aluminum powder -0.01~0.05% and the water content can be changed according to the requirement of gold tail slime density. The invention can reach the purposes of environmental protection, energy saving, using the waste, increasing the building's quality and assuring people's health, it can use waste slag completely, with good resistance to coldness and without radioactive harm, can be compound with mortar so that solve the problem of wall surface falling down.

Description

1. Technical field: [0001] The invention relates to a gold tailings autoclaved aerated concrete block and a production method, and belongs to the technical field of building wall materials and production methods. 2. Background technology: [0002] Existing building wall materials include clay solid bricks and hollow bricks, and autoclaved aerated concrete blocks with fly ash as the main raw materials. No autoclaved aerated concrete blocks have been produced using gold tailings. The autoclaved aerated concrete block with fly ash as the main raw material has certain defects, such as: radioactive substances exceeding the standard, tight supply and demand of raw materials (due to preferential tax policies, large amount of competition in the cement production industry, etc.), poor frost resistance, masonry construction The medium cannot be well combined with the mortar, and it is easy to cause quality accidents such as wall shedding, especially radioactive pollution that seriousl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/18C04B18/14C04B22/04
CPCY02W30/91
Inventor 杨文豪刘文波矫经涛常书财桑秀江
Owner QIXIA HONGJIAN NOVEL BUILDING MATERIAL
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