High-strength waterproof gypsum brick and method for preparing same

A technology of gypsum bricks and dihydrate gypsum, which is applied in the field of building materials, can solve the problems of poor water resistance of gypsum, and achieve the effects of easy mastery, pollution reduction, and significant economic and social benefits

Inactive Publication Date: 2006-12-27
CHONGQING UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method uses a large amount of industrial waste slag produced in the process of smelting or chemical production as raw materials, reduces the cost of stacking waste slag for enterprises, reduces the pollution of waste slag to the environment, is conducive to the reuse of waste materials, and solves the problem of poor water resistance of gypsum in waste slag. Provide high-strength building bricks, expand the use of waste slag bricks, and open up broader market prospects. The production method is simple, easy to master, low production cost, and reasonable formula

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1. Make high-strength water-resistant gypsum bricks according to the following steps.

[0024] a. Grind 700Kg of dihydrate gypsum into particles with a particle size of less than 1cm, grind 270Kg of yellow phosphorus slag and 30Kg of lime separately, and grind them until the specific surface area is greater than 250m 2 / kg of powder, and then mixed to obtain product A;

[0025] b. Add product A with water and stir evenly to obtain product B;

[0026] c. Vibrating and pressing product B into bricks to obtain product C;

[0027] d. After curing product C by steam for 8 hours, the finished brick can be obtained.

Embodiment 2

[0028] Example 2. Make high-strength water-resistant gypsum bricks according to the following steps.

[0029] a. Grind 500Kg of dihydrate gypsum into particles with a particle size of less than 1cm, crush 470Kg of yellow phosphorus slag and 30Kg of lime respectively, and grind them until the specific surface area is greater than 250m 2 / kg of powder, and then mixed to obtain product A;

[0030] b. Add product A with water and stir evenly to obtain product B;

[0031] c. Extrude product B into adobe to obtain product C;

[0032] d. After curing product C by steam for 24 hours, the finished brick can be obtained.

Embodiment 3

[0033] Example 3. Make high-strength water-resistant gypsum bricks according to the following steps.

[0034] a. Grind 700Kg dihydrate gypsum into particles with a particle size of less than 1cm, 270Kg cement (or use granulated blast furnace slag, fly ash, silica fume, steel slag, yellow phosphorus slag, pyrite slag, pozzolan, lithium slag) Any alternative cement), 30Kg of lime are crushed separately, and the specific surface area is greater than 250m 2 / kg of powder, and then mixed to obtain product A;

[0035] b. Add product A with water and stir evenly to obtain product B;

[0036] c. Vibrating and pressing product B into bricks to obtain product C;

[0037] d. After steam curing product C for 36 hours, the finished brick can be obtained.

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PUM

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Abstract

The invention discloses a high-strength waterproof plaster brick and preparing method, which comprises the following parts: 40-90 percent plasters dihydrate, 10-60 percent hydraulic gelling material and 1-10 percent booster. The preparing method comprises the following steps: dispensing; grinding; sieving; blending; doping water; stirring; vibrating; pressing or squeezing into moulding; curing through steam. The invention uses large scale of industrial waste in the smelting or chemical manufacturing course as raw material, which reduces waste from polluting environment.

Description

technical field [0001] The invention relates to a high-strength water-resistant gypsum brick and a preparation method thereof, belonging to the field of building materials. Background technique [0002] In the process of smelting or chemical production, a large amount of industrial waste residues will be produced, such as various chemical gypsum, phosphogypsum, desulfurization gypsum, fluorine gypsum and water-quenched granulated blast furnace slag, fly ash, yellow phosphorus slag, pyrite slag, etc. These industrial wastes cannot be dumped casually. For a long time, storage yards have been set up to accumulate wastes, which have not been fully utilized, occupied a large amount of valuable land resources, and brought heavy economic burdens to enterprises. On the other hand, due to the The harmful components of the waste may seep into the ground, causing environmental pollution, destroying the ecological environment and ecological balance. If these industrial wastes are treate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14
CPCC04B28/14
Inventor 刘芳李应平杨步雷
Owner CHONGQING UNIV
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