Coal gangue brick and preparation method thereof

A technology of coal gangue and pumice, applied in ceramic products, other household appliances, applications, etc., can solve problems such as brick body damage

Inactive Publication Date: 2016-07-06
重庆市合川区狮滩矸砖厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, due to the introduction of CaCO3 into the microporous former, CaCO3 is thermally decomposed to form CaO during the firing process, and the lime burst phenomenon caused by CaO will cause damage to the brick body.

Method used

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  • Coal gangue brick and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] As shown in the column of Example 1 in Table 1, the coal gangue brick, the scheme is: its components and its preferred mass parts are as follows: 65 parts of coal gangue with a calorific value of 1880kJ / mol, 20 parts of fly ash, Kasong 3 parts, 8 parts of aluminum dihydrogen phosphate, 4 parts of pore-forming agent, pore-forming agent components and their mass parts are as follows, 3 parts of sawdust, 7 parts of rice husk, 20 parts of soda ash, 35 parts of pumice, and 35 parts of perlite.

[0023] The method for preparing coal gangue bricks is as follows:

[0024] (1) Manually detect the calorific value of coal gangue, and batch the coal gangue so that the calorific value of the coal gangue is 1800kJ / mol-2000kJ / mol,

[0025] (2) Remove scrap iron after mixing coal gangue, fly ash, Kasong and aluminum dihydrogen phosphate,

[0026] (3) Coarsely crushing and pulverizing the mixed mixture, and finally ball mill grinding until the maximum particle size is less than 1 mm, ...

Embodiment 2

[0034] The difference from Example 1 is that its components and their preferred mass parts are as follows: 65 parts of coal gangue with a calorific value of 1880kJ / mol, 20 parts of fly ash, 3 parts of Kason, 7 parts of aluminum dihydrogen phosphate, 5 parts of pore-forming agent, pore-forming agent components and their mass parts are as follows: 3 parts of sawdust, 7 parts of rice husk, 20 parts of soda ash, 35 parts of pumice, and 35 parts of perlite. In Example 2, by increasing the mass fraction of the pore-forming agent, while reducing the weight of the brick body, the compressive strength of the brick body is still guaranteed to be 19.1Mpa, which is greater than the strength grades MU10 and MU15 in GB13544-2011.

Embodiment 3

[0036] The difference from Example 2 is that its components and their preferred mass parts are as follows: 64 parts of coal gangue with a calorific value of 1880kJ / mol, 20 parts of fly ash, 3 parts of Kason, 7 parts of aluminum dihydrogen phosphate, 6 parts of pore-forming agent, pore-forming agent components and their mass parts are as follows: 4 parts of sawdust, 6 parts of rice husk, 30 parts of soda ash, 30 parts of pumice, and 30 parts of perlite. In embodiment 3, by increasing the mass fraction of the pore-forming agent, and increasing the mass fraction of soda ash in the pore-forming agent, the weight of the brick body is further reduced, and the compressive strength of the brick body is guaranteed to be 18.3Mpa. It is greater than the strength grades MU10 and MU15 in GB13544-2011.

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Abstract

The invention discloses a coal gangue brick and a preparation method thereof. According to the technical scheme, the coal gangue brick comprises the following components in parts by weight: 60-70 parts of coal gangue with a calorific value of 1800kJ / mol-2000kJ / mol, 20-30 parts of coal ash, 2-3 parts of Kathon, 5-8 parts of aluminum dihydrogen phosphate and 4-6 parts of a pore-forming agent, wherein the pore-forming agent comprises the following components in parts by weight: 2-5 parts of saw dust, 6-10 parts of rice husk, 20-30 parts of sodium carbonate, 30-40 parts of float stone and 30-40 parts of perlite. According to the coal gangue brick and the preparation method thereof, by adding the pore-forming agent, the purpose of increasing porosity in a brick body is achieved; meanwhile, by changing the components and processing process of the pore-forming agent, a lime blowing phenomenon of the brick body is avoided.

Description

technical field [0001] The invention relates to a gangue brick added with porous substances, in particular to a gangue brick. Background technique [0002] Fly ash is the fine ash collected from the flue gas after coal combustion. Fly ash is the main solid waste discharged from coal-fired power plants. The main oxide composition of fly ash in thermal power plants in my country is: SiO2, Al2O3, FeO, Fe2O3, CaO, TiO2, etc. The main source of fly ash is coal-fired thermal power plants and urban central heating boilers. With the development of the power industry, the discharge of fly ash from coal-fired power plants is increasing year by year. If it is discharged into the water system, the river will be silted up, and the toxic chemicals in it will also cause harm to humans and organisms. At present, my country is one of the industrial waste residues with a large amount of fly ash. [0003] Coal gangue is one of the largest industrial solid wastes in China. At present, more ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/34C04B38/06C04B38/08
CPCC04B28/344C04B2111/40C04B38/06C04B38/08C04B18/12C04B18/08C04B24/008C04B18/24C04B18/26C04B22/10C04B14/04C04B14/18
Inventor 李隆建
Owner 重庆市合川区狮滩矸砖厂
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