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Chemical industrial gypsum building materials and method for manufacturing same

A technology of chemical gypsum, manufacturing method, applied in the direction of sustainable waste treatment, solid waste management, climate sustainability, etc., to achieve the effect of reduced energy consumption, good product quality and low production cost

Inactive Publication Date: 2008-03-12
深圳清研创业投资有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: to provide a chemical gypsum building material, which is energy-saving and environmentally friendly, and can effectively solve the environmental problems caused by waste residues in chemical production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] A chemical gypsum building material, the composition (weight%) is: 30% of titanium gypsum, 16% of fly ash, 30% of titanium tailings, 20% of cement clinker, 4.0% of early strength water reducer, and the above components are mixed It is ground, made into a slurry, pressed into shape, and left to stand for 7 days. The produced standard building blocks have a neat appearance, no bending or missing edges and corners, the average compressive strength reaches more than 15MPa, and the minimum value reaches 12MPa; the drying shrinkage rate is less than 0.06%, the softening coefficient is not less than 0.75, and it is not radioactive.

Embodiment 2

[0062] A kind of industrial gypsum building material, the composition (weight%) is: 60% of titanium gypsum, 15% of fly ash, 20% of titanium tailings, 5% of cement clinker, the components are mixed and ground, made into slurry, and pressed Shaped, then left to rest for 7 days. The produced standard building blocks have a neat appearance, no bending or missing edges and corners, the average compressive strength reaches more than 15MPa, and the minimum value reaches 12MPa; the drying shrinkage rate is less than 0.06%, the softening coefficient is not less than 0.75, and it is not radioactive.

Embodiment 3

[0064] A kind of industrial gypsum building material, the composition (weight%) is: 40% of phosphogypsum, 25% of fly ash, 20% of water-quenched slag, 10% of cement clinker, and 5% of activator. The components are mixed and ground to prepare into a slurry, pressed into shape, and then left to stand for 28 days. The produced standard building blocks have a neat appearance, no bending or missing edges and corners, the average compressive strength reaches more than 15MPa, and the minimum value reaches 12MPa; the drying shrinkage rate is less than 0.06%, the softening coefficient is not less than 0.75, and it is not radioactive.

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Abstract

The present invention relates to a chemical gesso building material, which consists of the following components according to weight ratio: 30-60 percent of waste gesso, 15-25 percent of powder coal; 20-30 percent of scoria and 5-20 percent of cement material. The chemical waste stone includes titanium gesso and phosphor gesso. The scoria includes titanium scoria, steel residue, water quenching residue and silicon powder stone. The chemical gesso also includes an assistant agent with the weight ratio of 0-5 percent. The preparation method for the chemical gesso building material includes the following steps: the raw materials are to be prepared according to the corresponding weight ratio for each component; the components are mixed and grinded to prepare the material slurry, and then is to be pressed into a mould; the mould is kept for more than 7 days. The present invention uses the chemical waste residue as the main materials and adopts simple process and equipments; without any calcining, the chemical gesso building products with much better physical force performance can be manufactured. The present invention is with much greater economical benefit and social benefit.

Description

Technical field [0001] The present invention relates to gypsum building materials, in particular to chemical gypsum building materials made from waste chemical gypsum and their manufacturing methods. Background technique [0002] Existing building products used as non-load-bearing building materials in construction generally use clay as the main raw material, and are made into finished products through processes such as calcination and cooling. Since a large amount of high-quality clay is required, land (cultivated land) is wasted; and, due to calcination The temperature is high, the heat energy consumption is high, and the product cost is high. [0003] Gypsum building materials are increasingly used due to their ability to regulate humidity and temperature. Existing gypsum building materials use natural gypsum ore as raw materials, and the manufacturing process of building materials requires processes such as calcination, which consumes high energy. On the other hand, a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B18/08C04B18/12
CPCC04B28/142Y02W30/91C04B7/00C04B18/08C04B18/141C04B14/043
Inventor 刘淑杰周湧武嘉毛仲佳
Owner 深圳清研创业投资有限公司
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