A kind of coal gangue recycled slope protection brick and preparation method thereof

A technology for coal gangue and slope protection bricks, which is applied in the field of coal gangue recycled slope protection bricks and its preparation, can solve the problems of easy collapse, demoulding and curing time shortening, etc., and achieves enhanced strength, shortened demoulding and curing time, and demolding time. the effect of shortening

Active Publication Date: 2021-06-01
JINGMEN YIXIANG CONSTR MACHINERY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the defects of the prior art, and provide a kind of gangue regeneration slope protection brick, add some additives in the coal gangue waste residue as the composition of the coal gangue regeneration slope protection brick, so that the performance of the coal gangue becomes excellent, solves the problem of the traditional The coal gangue porous foam brick is easy to collapse after foaming, and the compressive strength is improved; the demoulding and curing time are greatly shortened, saving maintenance costs, which is conducive to large-scale production of factories and enterprises; recycling coal gangue waste slag, turning waste into precious

Method used

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  • A kind of coal gangue recycled slope protection brick and preparation method thereof
  • A kind of coal gangue recycled slope protection brick and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0031] 1. A coal gangue recycled slope protection brick, comprising the following raw materials in parts by weight: 350 parts of cement, 350 parts of stone powder, 300 parts of uncalcined coal gangue, 3.5 parts of accelerator (sodium hexametaphosphate), 3.7 parts of aluminum powder, Thickener (gypsum) 0.5 parts, early strength agent (calcium sulfate) 19.5 parts, β-naphthalenesulfonate sodium formaldehyde condensate 10 parts.

[0032] 2, the preparation method of described coal gangue regeneration slope protection brick comprises the following steps:

[0033] Step 1. Weigh the raw materials according to the formula, add the weighed cement, stone powder and uncalcined coal gangue into the stirring tank, stir and mix to obtain a mixed slurry;

[0034] Step 2, first add the accelerator to the mixing slurry, stir, then add the early strength agent and β-naphthalenesulfonate sodium formaldehyde condensate in turn, add a part of the water agitator to stir, and then add thickening und...

Embodiment 2

[0037] A kind of coal gangue recycled slope protection brick, comprising the following raw materials in parts by weight: 300 parts of cement, 300 parts of stone powder, 250 parts of uncalcined coal gangue, 2 parts of accelerator (sodium hexametaphosphate), 2 parts of aluminum powder, thickening 0.1 part of agent (sodium dodecyl sulfonate), 10 parts of early strength agent (sodium sulfate), 2 parts of β-naphthalene sulfonate sodium formaldehyde condensate. The preparation method of the gangue regeneration slope protection brick is the same as that in Example 1.

Embodiment 3

[0039] A kind of coal gangue recycled slope protection brick, comprising the following raw materials in parts by weight: 400 parts of cement, 400 parts of stone powder, 350 parts of uncalcined coal gangue, 5 parts of accelerator (sodium hexametaphosphate), 5 parts of aluminum powder, thickening Agent (ethoxylated alkyl sodium sulfide) 1 part, early strength agent (potassium sulfate) 30 parts, β-naphthalene sulfonate sodium formaldehyde condensate 18 parts. The preparation method of the gangue regeneration slope protection brick is the same as that in Example 1.

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Abstract

The invention discloses a coal gangue recycled slope protection brick and a preparation method thereof. The raw material comprises the following raw materials in parts by weight: 300-400 parts of cement, 300-400 parts of stone powder, 250-350 parts of uncalcined coal gangue, and an accelerator 2-5 parts, 2-5 parts of aluminum powder, 0.1-1 part of thickener, 10-30 parts of early strength agent, 2-18 parts of β-naphthalenesulfonate sodium formaldehyde condensate. Add some additives to the uncalcined coal gangue waste slag as a component of coal gangue regeneration slope protection bricks, so that the performance of coal gangue becomes excellent, the strength is enhanced, and the demoulding time is shortened. It can be used as a block brick for new wall materials; recycling coal Gangue waste slag, turning waste into treasure.

Description

technical field [0001] The invention relates to the technical field of coal gangue regeneration slope protection bricks, in particular to a coal gangue regeneration slope protection brick and a preparation method thereof. Background technique [0002] 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 component is Al 2 o 3 , SiO 2 , also contains varying amounts of Fe 2 o 3 , CaO, MgO, Na 2 O, K 2 O.P 2 o 5 , SO 3 And trace rare elements (gallium, vanadium, titanium, cobalt). China has accumulated about 1000Mt of coal gangue over the years, and continues to discharge about ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/00C04B18/12C04B38/02
CPCY02W30/91
Inventor 蔡芳昌吴锦阮波占雪晴丁慧章雅黄喆李雪飞蒋涛
Owner JINGMEN YIXIANG CONSTR MACHINERY
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