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Baking-free coal gangue brick and preparation method thereof

A technology of coal gangue and unburned bricks, which is applied in the field of building materials, can solve problems such as heavy smoke and harmful gases, destroy the ecological environment, and geological disasters, and achieve the effects of low shrinkage, good frost resistance, and low production costs

Inactive Publication Date: 2017-05-17
重庆市永川区新窝建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A large amount of coal gangue is piled up to occupy a large amount of land, and piled up in the open will also cause dust to fly, seriously damage the surrounding ecological environment, cause pollution and harm to the air, soil, and water systems, and easily cause geological disasters
In addition, coal gangue often spontaneously combusts, which not only wastes resources, but also produces a large amount of smoke and harmful gases

Method used

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  • Baking-free coal gangue brick and preparation method thereof
  • Baking-free coal gangue brick and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Coal gangue unburned bricks are prepared from the following raw materials: 425R ordinary portland cement 16kg, clay rock gangue 25kg, class II fly ash 4kg, sodium lignosulfonate 0.02kg, polyacrylate graft copolymer 0.03kg, 9kg of carbide slag, 7kg of river sand with a particle size of 0.075-0.1mm and 13kg of water.

[0038] The preparation method of described coal gangue unfired brick is:

[0039] A. Pretreatment: crush ordinary Portland cement, coal gangue, fly ash, sodium lignosulfonate, polyacrylate graft copolymer, and carbide slag respectively (425R ordinary Portland cement, coal gangue, powder The crushing ratios of coal ash, sodium lignosulfonate, polyacrylate graft copolymer and carbide slag are 1.8, 2.1, 1.5, 2.5, 2.5, 3.2) and pulverized (to a particle size of 1-1.5mm);

[0040] B. Ingredients: pretreated 425R ordinary Portland cement, fly ash, sodium lignosulfonate, polyacrylate graft copolymer, coal gangue, unpretreated river sand and pretreated calcium car...

Embodiment 2

[0044] Coal gangue unburned bricks are prepared from the following raw materials: 425R ordinary portland cement 12kg, clay rock gangue 22kg, class II fly ash 7kg, sodium lignosulfonate 0.012kg, polyacrylate graft copolymer 0.018kg, 6kg of carbide slag, 5kg of river sand with a particle size of 0.075-0.1mm and 16kg of water.

[0045] The preparation method of described coal gangue unfired brick is:

[0046] A. Pretreatment: crush ordinary Portland cement, coal gangue, fly ash, sodium lignosulfonate, polyacrylate graft copolymer, and carbide slag respectively (425R ordinary Portland cement, coal gangue, powder The crushing ratios of coal ash, sodium lignosulfonate, polyacrylate graft copolymer and carbide slag are 1.8, 2.1, 1.5, 2.5, 2.5, 3.2) and pulverized (to a particle size of 1-1.5mm);

[0047] B. Ingredients: pretreated 425R ordinary Portland cement, fly ash, sodium lignosulfonate, polyacrylate graft copolymer, coal gangue, unpretreated river sand and pretreated calcium car...

Embodiment 3

[0051] Coal gangue unburned bricks are prepared from the following raw materials: 425R ordinary portland cement 13kg, clay rock gangue 24kg, class II fly ash 5kg, sodium lignosulfonate 0.016kg, polyacrylate graft copolymer 0.024kg, 8kg of carbide slag, 6kg of river sand with a particle size of 0.075-0.1mm and 15kg of water.

[0052] The preparation method of described coal gangue unfired brick is:

[0053] A. Pretreatment: crush ordinary Portland cement, coal gangue, fly ash, sodium lignosulfonate, polyacrylate graft copolymer, and carbide slag respectively (425R ordinary Portland cement, coal gangue, powder The crushing ratios of coal ash, sodium lignosulfonate, polyacrylate graft copolymer and carbide slag are 1.8, 2.1, 1.5, 2.5, 2.5, 3.2) and pulverized (to a particle size of 1-1.5mm);

[0054] B. Ingredients: pretreated 425R ordinary Portland cement, fly ash, sodium lignosulfonate, polyacrylate graft copolymer, coal gangue, unpretreated river sand and pretreated calcium c...

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Abstract

The invention belongs to the technical field of building materials, in particular to a baking-free coal gangue brick. The baking-free coal gangue brick is prepared from the following raw materials in parts by mass: 12-16 parts of ordinary Portland cement, 22-25 parts of coal gangue, 4-7 parts of fly ash, 0.03-0.05 part of a water reducing agent, 6-9 parts of carbide slag, 5-7 parts of river sand and 13-16 parts of water. The baking-free coal gangue brick uses the coal gangue and the carbide slag as the raw materials, so that recycling of resources is achieved. The baking-free coal gangue brick is simple in production method and low in production cost. The prepared baking-free coal gangue brick is good in frost resistance, low in shrinkage rate, low in density and high in compressive strength.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a coal gangue unfired brick and a preparation method thereof. Background technique [0002] Coal gangue is the 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 the coal seam during the coal formation process, including the gangue during the roadway excavation process. 1. 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). A large amount of coal gangue is piled up to occupy a large amount of land, and piled up in the open will also cause dust to fly, ser...

Claims

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Application Information

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IPC IPC(8): C04B28/04B28B11/24
CPCC04B28/04B28B11/245C04B18/12C04B18/08C04B24/18C04B24/26C04B18/0427C04B14/06
Inventor 穆宏波
Owner 重庆市永川区新窝建材有限公司