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Novel calcination-free desulfurized gypsum brick

A desulfurized gypsum, calcination-free technology, applied in the field of building bricks, can solve the problems of polluting the environment, land occupation by coal-fired power plants, etc., and achieve the effects of high product quality, low cost, and improved compressive strength

Inactive Publication Date: 2011-08-03
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solve the problems of power plant flue gas desulfurization gypsum and fly ash that occupy land and pollute the environment in coal-fired power plants

Method used

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  • Novel calcination-free desulfurized gypsum brick
  • Novel calcination-free desulfurized gypsum brick
  • Novel calcination-free desulfurized gypsum brick

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] Produce new type non-calcined desulfurization gypsum bricks according to the following quality:

[0017] formula

[0018]

[0019] Mix and stir desulfurized gypsum, fly ash, cement, sodium hydroxide, sodium silicate, sulfate, and calcium oxide according to the above ratio, and then add triethanolamine and reinforced fiber aqueous solution according to the ratio and mix evenly. The ratio of water to material is 0.48;

[0020] The mixture is vibrated and pressed into the mold, and the pressure is 100-300 Newton during the compression. After the test piece is formed, let it stand at room temperature for 3 days before demoulding. After demoulding, it will be naturally cured for 25 days to obtain the finished desulfurized gypsum brick.

[0021] The technical indicators of the obtained new-type calcined-free desulfurization gypsum bricks are shown in Table 1:

[0022] Table I:

[0023]

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PUM

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Abstract

The invention discloses a novel calcination-free desulfurized gypsum brick, belonging to the production field of building bricks. The calcination-free desulfurized gypsum brick comprises the following components in parts by weight: 45-55 parts of desulfurized gypsum, 25-35 parts of coal ash, 5-10 parts of No. 32.5 cement, 4-10 parts of triethanolamine, 3-5 parts of sodium hydroxide, 3-5 parts of sodium silicate, 3-5 parts of sulfate, 1-2 parts of calcium oxide and 0.05-0.1 part of reinforced fiber. The calcination-free desulfurized gypsum brick has the advantages of energy conservation and, good product quality, low price and the like, is environment-friendly, and treats wastes with wastes.

Description

technical field [0001] The invention patent designs a building brick, specifically a new type of calcined-free desulfurized gypsum brick, which is suitable for residential houses, ordinary residential buildings, and inner partition walls. Background technique [0002] Power plant flue gas desulfurization Gypsum and fly ash are the two largest solid wastes in coal-fired power plants. The present invention can make good use of these two industrial waste residues, which will not only generate huge economic benefits but also produce immeasurable environmental benefits. The raw materials of the new type of calcined-free desulfurization gypsum bricks are easy to obtain and are industrial waste residues. Energy saving and environmental protection, this gypsum brick does not need to be calcined, which not only solves the problem of consuming a large amount of non-renewable land resources for ordinary bricks, but also solves the disadvantage of high energy consumption for calcination...

Claims

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Application Information

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IPC IPC(8): C04B28/14
CPCC04B28/144C04B20/04C04B28/26C04B20/107Y02W30/91C04B7/02C04B11/264C04B14/42C04B16/0633C04B18/08C04B18/24C04B20/0076C04B22/062C04B22/064C04B22/147C04B22/148C04B24/122C04B40/0028C04B40/02C04B40/0259C04B12/04
Inventor 杨道武刘义李金徽姚艳任卓张云云杨纯杨岳主马奇伍娟娟李海如湛文光
Owner CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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