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Method for preparing magnesium slag aerated concrete building block added with cinder

A technology of aerated concrete and coal cinder, which is applied in the field of building materials, can solve the problems of increasing the cost of waste disposal by enterprises, the waste residue is easy to generate dust, and occupies land resources, etc., and achieves good product effects, low production costs, and pollution reduction effects.

Inactive Publication Date: 2008-06-04
GUIZHOU SHIJI TIANYUAN MINING IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These waste residues are usually treated as waste materials, especially these magnesium reduction waste residues are in the form of powder, and the waste residues are easy to generate dust when they are stacked in the wind, which will cause serious pollution to the surrounding environment. At the same time, the transportation of waste residues and the cost of building a storage yard will increase Reduce the cost of waste disposal for enterprises and occupy land resources

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Example 1. Make the magnesium slag aerated concrete block according to the following steps.

[0021] a. First mix 650Kg of magnesium reduction slag, 220Kg of cinder, 100Kg of cement and 30Kg of gypsum with 460Kg of water, then add 0.6Kg of gas-generating agent and mix evenly to obtain product A;

[0022] b. Pour the product A into the mold and cast it into a mold. After static stopping and pre-curing, turning and cutting, autoclaving and curing, the finished block is obtained. The finished blocks can be building components such as bricks, columns, boards, etc.

[0023] Magnesium reduction slag and coal slag can be the magnesium reduction waste slag produced during the vacuum magnesium smelting process by the reduction method, or the magnesium reduction slag obtained by other methods. Gypsum can be natural gypsum containing calcium sulfate, phosphogypsum or industrial by-product gypsum. The gas generating agent can be aluminum powder, aluminum powder paste, hydrogen p...

Embodiment 2

[0024] Example 2. Make the magnesium slag aerated concrete block according to the following steps.

[0025] a. First mix 800Kg of magnesium reduction slag, 150Kg of cinder, 250Kg of cement and 70Kg of gypsum with 500Kg of water, then add 1.2Kg of gas-generating agent and mix to obtain product A;

[0026] b. Pour the product A into the mold and cast it into a mold. After static stop and pre-curing, turning and cutting, autoclaving and curing, the finished product is obtained.

[0027] Magnesium reduction slag and coal slag can be magnesium reduction waste slag produced in the vacuum magnesium smelting process by reduction method and coal slag produced by coal-fired kilns, or magnesium reduction slag and coal slag obtained by other methods. Gypsum can be natural gypsum containing calcium sulfate, phosphogypsum or industrial by-product gypsum. The gas generating agent can be aluminum powder, aluminum powder paste, hydrogen peroxide, calcium carbide or bleaching powder type gas ...

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PUM

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Abstract

The invention discloses a magnesium slag aerated concrete block and a preparation method thereof, which takes the raw materials at the weight ratio of: magnesium-reduced slag of 50-87 portions, cement of 5-30 portions, gypsum of 3-10 portions, coal cinder of 5-25 portions and gas former of 0.05-0.15 portions, and then the product is obtained by adding water of 20-60 percent at the weight proportion of all the dry materials. The product is obtained according to the methods as follows: magnesium-reduced slag, coal cinder, cement, gypsum, water and gas former are mixed evenly at certain proportion and then are treated with standing and maintaining, inverting and incising, autoclaving and conserving. The invention adopts the magnesium slag generated from the magnesium-smelting process as the main raw material to produce 4MPa building aerated concrete block to be conducive to the reuse of the waste, thereby the enterprise not only is free from the expense of waste treatment, but also has new economic benefit, thus avoiding the occupation of land.

Description

technical field [0001] The invention relates to a preparation method of a magnesium slag aerated concrete block added with coal slag, belonging to the field of building materials. Background technique [0002] During the vacuum smelting process of magnesium reduction, a large amount of magnesium reduction waste and coal slag will be produced. These waste residues are usually treated as waste materials, especially these magnesium reduction waste residues are in the form of powder, and the waste residues are easy to generate dust when they are stacked in the wind, which will cause serious pollution to the surrounding environment. At the same time, the transportation of waste residues and the cost of building a storage yard will increase Reduce the cost of enterprises to deal with waste residue, and occupy land resources. Contents of the invention [0003] The object of the present invention is to provide a method for preparing magnesium slag aerated concrete block with cind...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B18/14C04B22/14C04B18/06C04B38/02
CPCC04B28/02C04B2201/50C04B28/142C04B28/14C04B2103/42Y02W30/91C04B18/067C04B18/141C04B22/143C04B38/02C04B40/0245C04B7/02C04B14/322C04B18/0454C04B22/04C04B22/068
Inventor 张继强陈黔
Owner GUIZHOU SHIJI TIANYUAN MINING IND
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