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

A technology of coal gangue and slope protection bricks, which is applied in the field of coal gangue regeneration slope protection bricks and its preparation, can solve the problems of shortened demoulding and curing time, easy collapse, etc., achieves shortening of demoulding and curing time, improves early strength, and promotes cement hardening effect

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

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Embodiment 1

[0032] 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, 0.5 parts of thickener (gypsum), 19.5 parts of early strength agent (calcium sulfate), 10 parts of additives; the additive is a mixture of ethylene glycol and triethanolamine, wherein the mass ratio of ethylene glycol: triethanolamine is 15.5:1 .

[0033] 2, the preparation method of described coal gangue regeneration slope protection brick comprises the following steps:

[0034] 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;

[0035] Step 2, first add the accelerator to the mixing slurry, stir, then add the early strength agent and additives in turn, add a part...

Embodiment 2

[0038] 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 dodecylsulfonate), 10 parts of early strength agent (sodium sulfate), 2 parts of additives; the additive is a mixture of ethylene glycol and triethanolamine, wherein the mass ratio of ethylene glycol: triethanolamine It is 12:0.5. The preparation method of the gangue recycled slope protection brick is the same as that in Example 1.

Embodiment 3

[0040] 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 1 part of agent (ethoxylated alkyl sodium sulfide), 30 parts of early strength agent (potassium sulfate), 18 parts of additive; the additive is a mixture of ethylene glycol and triethanolamine, wherein ethylene glycol: the mass of triethanolamine The ratio is 18:2. The preparation method of the gangue recycled 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, comprising 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 2-2 parts of accelerators. 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 additive; the additive is a mixture of ethylene glycol and triethanolamine, wherein ethylene glycol: The mass ratio of triethanolamine is 12-18:0.5-2. In the present invention, some additives are added to the uncalcined coal gangue waste slag as components of the gangue regeneration slope protection brick, so that the performance of the gangue becomes excellent, the strength is enhanced, and the demoulding time is shortened, which can be used as a block brick of a new wall material; recovery Use coal gangue waste residue to turn 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): C04B28/02C04B40/02C04B111/40
Inventor 蔡芳昌李雪飞吴锦阮波占雪晴丁慧章雅黄喆蒋涛
Owner JINGMEN YIXIANG CONSTR MACHINERY
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