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Environment-friendly preparation technology of baking-free brick

A kind of preparation process, technology of non-burning brick

Inactive Publication Date: 2018-08-21
界首市静峰新型建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above problems, the present invention aims to provide an environmentally friendly preparation process of unburned bricks to solve the problem of poor compressive strength of unburned bricks prepared from iron tailings

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A preparation process of environmentally friendly fire-free bricks is characterized in that it comprises the following steps:

[0020] (1) Wash 15 parts by weight of corundum sand with water and acetone to remove surface impurities and oil stains, dry in a muffle furnace at 80°C, and cool in a desiccator for later use;

[0021] (2) Add 2 parts of 1,4-p-phenylene diisocyanate and 6 parts of polyacrylamide to 150 parts of water, stir until it is completely dissolved, add the result of step (1), ball mill for 1 hour, and add 20 parts of fly ash , After the ball milling is continued for 1 hour, the water is removed by drying to obtain the corundum sand modified with fly ash;

[0022] (3) Add the resultant from step (2) to the wheel mill for 60 seconds, then transfer to the mixer, add 20 parts of cement and 70 parts of iron tailings and stir for 3 minutes. After the mixture is obtained, add 10% water, 0.5 Part water reducing agent, stir for 4min;

[0023] (4) Take an appropriate am...

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PUM

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Abstract

The invention discloses an environment-friendly preparation technology of a baking-free brick. The preparation technology takes iron tailings as a major raw material, has important significance to environmental protection and complies with novel wall material development requirements and the energy conservation and emission reduction policy of China at the present stage; emery is modified by pulverized fuel ash; the surface of the modified emery absorbs much pulverized fuel ash; the pulverized fuel ash can react with free Ca(OH)2 in cement slurry to generate cementitious substances such as calcium aluminosilicate; the compatibility of the emery with a brick body matrix is improved; at the same time, the technology has a positive effect on later strength of the baking-free brick; and the compressive strength of the baking-free brick is greatly improved due to the addition of the modified emery.

Description

Technical field [0001] The invention belongs to the technical field of building materials, and specifically relates to a preparation process of an environmentally friendly fire-free brick. Background technique [0002] Iron tailings are industrial solid wastes produced after iron ore is ground and sorted. At present, the comprehensive utilization rate of iron tailings in my country is only 7%, and the stockpiles are more than one billion tons, accounting for nearly one-third of the total tailings stockpiles. A large amount of stockpiled tailings are placed in the tailings dam, which not only takes up a lot of land resources, but also the mining enterprises need to consume a lot of funds for the construction and maintenance of the tailings dam. In addition, the long-term accumulation of tailings will cause great harm to the surrounding soil, water and air. [0003] Since the mineral composition and chemical composition of iron tailings are similar to building materials, most of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B20/10
CPCC04B20/1055C04B28/00C04B2111/00017C04B2201/50C04B14/303C04B18/12C04B24/18C04B20/1033C04B20/1022C04B18/08
Inventor 肖克生
Owner 界首市静峰新型建材有限公司
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