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Coal gangue building board and preparation method thereof

A technology for building boards and gangue, which is applied in the field of fireproof, light, heat-preserving coal gangue building boards and its preparation, can solve problems such as inability to have high compressive strength, achieve good fire prevention effects, good compressive performance, and avoid green bodies The effect of breaking or even destroying

Active Publication Date: 2012-09-19
北京建工华创科技发展股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] For this reason, the technical problem to be solved by the present invention lies in the problem that in the prior art, when using coal gangue to prepare building boards, it is impossible to achieve higher compressive strength at a lower sintering temperature, and then to provide a Calcined coal gangue building board with good compressive strength
[0007] The second technical problem to be solved by the present invention lies in the problem that foaming treatment cannot be realized at a lower temperature in the prior art, so as to provide a foaming treatment that can be performed at a lower temperature and is lighter in weight and has a Coal gangue building board with fire prevention and heat preservation effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Coal gangue pottery sand of the present invention is prepared by the following components by weight:

[0040] 30 parts of coal gangue, 70 parts of glass powder, 5 parts of a mixture of sodium carbonate and calcium carbonate, and 10 parts of water glass.

[0041] The above-mentioned gangue pottery sand has a particle size of 0.25-8mm and a bulk density of 185-200kg / m 3 , The thermal conductivity is 0.07-0.08W / (m.K).

[0042]The gangue building board is prepared by bonding the above-mentioned gangue pottery sand and water glass binder at a mass ratio of 2:1.

[0043] Above-mentioned coal gangue pottery sand is prepared by following method:

[0044] (1) Take the mixture of coal gangue, glass powder and sodium carbonate and calcium carbonate according to the selected parts by weight, mix uniformly, and grind to a particle size of more than 400 mesh;

[0045] (2) Mix the above-mentioned prepared granules with water glass evenly, and granulate on a disc granulator to form ...

Embodiment 2

[0054] Coal gangue pottery sand of the present invention is prepared by the following components by weight:

[0055] 70 parts of coal gangue, 20 parts of glass powder, 10 parts of dolomite foaming agent, 25 parts of water glass, and 10 parts of glass powder as a dispersant.

[0056] The above-mentioned gangue pottery sand has a particle size of 0.25-8mm and a bulk density of 630-650kg / m 3 , The thermal conductivity is 0.14-0.15W / (m.K).

[0057] The gangue building board is prepared by bonding the above-mentioned gangue pottery sand and water glass binder at a mass ratio of 3:1.

[0058] Above-mentioned coal gangue pottery sand is prepared by following method:

[0059] (1) Take coal gangue, glass powder and dolomite foaming agent according to selected weight parts respectively and mix uniformly, and grind to the powder grain that particle diameter is more than 400 orders;

[0060] (2) Mix the above-mentioned prepared granules with water glass evenly, and granulate on a disc ...

Embodiment 3

[0069] Coal gangue pottery sand of the present invention is prepared by the following components by weight:

[0070] 45 parts of coal gangue, 50 parts of glass powder, 8 parts of calcium carbonate, 15 parts of water glass, and 5 parts of kaolin as a dispersant.

[0071] The above-mentioned gangue pottery sand has a particle size of 0.25-8mm and a bulk density of 400-420kg / m 3 , The thermal conductivity is 0.1-0.12W / (m.K).

[0072] The gangue building board is prepared by bonding the above-mentioned gangue pottery sand and water glass binder at a mass ratio of 2.5:1.

[0073] Above-mentioned coal gangue pottery sand is prepared by following method:

[0074] (1) Take coal gangue, glass powder and sodium carbonate according to selected weight parts, mix uniformly respectively, and grind to the granules whose particle diameter is more than 400 mesh;

[0075] (2) Mix the above-mentioned prepared powder and water glass evenly, and granulate on a disc granulator to form a ceramic ...

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Abstract

The invention belongs to the field of building material preparation and particularly relates to fireproof and heat-preservation light coal gangue building board prepared from coal mining solid waste coal gangue and a preparation method for the coal gangue building board. The coal gangue building board is prepared by binding coal gangue ceramsite sand with a binder, wherein the mass ratio of the coal gangue ceramsite to the binder is (2-3):1; the coal gangue ceramsite sand is prepared from the components in parts by weight: 30-70 parts of coal gangue, 20-70 parts of glass dust, 2-10 parts of foaming agent and 10-25 parts of water glass. The coal gangue building board has the characteristics of light weight, heat preservation, fireproofness, heat insulation and high compression strength.

Description

technical field [0001] The invention belongs to the field of building material preparation, and in particular relates to a light-weight, fireproof and heat-retaining coal gangue building board prepared by utilizing coal mining solid waste coal gangue and a preparation method thereof. Background technique [0002] China is a developing country that uses coal as its main energy source. Coal accounts for more than 70% of primary energy consumption, more than twice the world average. The energy structure is still dominated by coal. Coal gangue is solid waste discharged during the coal mining process and coal washing process. It is a black-gray rock with low carbon content and harder than coal that is associated with coal seams during the coal formation process. Including the excavation gangue during the roadway excavation, the gangue extracted from the roof, floor and interlayer during the mining process, and the gangue picked out during the coal washing process. Its main comp...

Claims

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Application Information

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IPC IPC(8): C04B28/26
Inventor 周华林钟天成
Owner 北京建工华创科技发展股份有限公司
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