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A kind of porous brick and its production method

A technology of porous bricks and raw materials, applied in the field of building materials, can solve problems such as low quality, high energy consumption, and difficult disposal, and achieve the effect of reducing environmental pollution and water pollution

Active Publication Date: 2018-09-07
GUIZHOU ANKAIDA IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Therefore, as industrial production waste, construction spoil, fly ash, coal gangue, and tailings sludge are difficult to dispose of. If they are not disposed of properly, they will cause serious environmental pollution problems. For this reason, a wave of waste recycling has been set off. In the existing literature, no method has been found to simultaneously use the four wastes of construction spoil, fly ash, coal gangue, and tailings mud to produce porous bricks.
[0007] Combined with the traditional production of porous bricks, the defects of high production cost, high energy consumption, and low quality, this invention studies these wastes, and uses waste to produce porous bricks, which provides a new idea for the production of porous bricks

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A porous brick, the proportion of raw materials is 8 parts of construction spoil, 2 parts of fly ash, 6 parts of tailing mud and 3 parts of coal gangue.

[0038] The water content of the construction spoil is 11%, the drying shrinkage rate is 2%, and the drying sensitivity coefficient is 0.1.

[0039] The moisture content of the fly ash is 5%, the drying shrinkage rate is 0.5%, and the drying sensitivity coefficient is 0.2.

[0040] The water content of the tailings slime is 13%, the drying shrinkage rate is 1%, and the drying sensitivity coefficient is 0.15.

[0041] The water content of the gangue is 8%, the drying shrinkage rate is 2.3%, and the drying sensitivity coefficient is 0.08.

[0042] The production method of above-mentioned porous brick, its step is:

[0043] (1) Weigh the construction spoil, fly ash, tailings slime and coal gangue respectively according to the above weight ratio, mix them for 3 minutes, and send them to the primary crusher and secondary ...

Embodiment 2

[0052] A porous brick, the proportion of raw materials is 11 parts of construction spoil, 5 parts of fly ash, 4 parts of tailing mud and 9 parts of coal gangue.

[0053] The water content of the construction spoil is 8%, the drying shrinkage rate is 0.8%, and the drying sensitivity coefficient is 0.06.

[0054] The moisture content of the fly ash is 10%, the drying shrinkage rate is 2%, and the drying sensitivity coefficient is 0.5.

[0055] The water content of the tailings slime is 2%, the drying shrinkage rate is 0.3%, and the drying sensitivity coefficient is 0.1.

[0056] The water content of the gangue is 6%, the drying shrinkage rate is 0.9%, and the drying sensitivity coefficient is 0.4.

[0057] The production method of above-mentioned porous brick, its step is:

[0058] (1) Weigh the construction spoil, fly ash, tailings slime and coal gangue according to the above weight ratio, mix them for 5 minutes, and send them to the primary crusher and secondary crusher in seq...

Embodiment 3

[0067] A porous brick, the proportion of raw materials is 10 parts of construction spoil, 5 parts of fly ash, 8 parts of tailing mud and 5 parts of coal gangue.

[0068] The water content of the construction spoil is 3%, the drying shrinkage rate is 0.05%, and the drying sensitivity coefficient is 0.3.

[0069] The moisture content of the fly ash is 5%, the drying shrinkage rate is 0.2%, and the drying sensitivity coefficient is 0.3.

[0070] The water content of the tailings slime is 13%, the drying shrinkage rate is 1.8%, and the drying sensitivity coefficient is 0.05.

[0071] The water content of the gangue is 9%, the drying shrinkage rate is 2%, and the drying sensitivity coefficient is 0.6.

[0072] The production method of above-mentioned porous brick, its step is:

[0073] (1) Weigh the construction spoil, fly ash, tailings slime and coal gangue respectively according to the above weight ratio, mix them for 3 minutes, and send them to the primary crusher and secondar...

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Abstract

The invention relates to the field of building materials and especially relates to a perforated brick and a production method thereof. The production method comprises mixing building spoil, tailing mud, gangue and fly ash, carrying out fragmentation, sieving and re-mixing to obtain mixed raw materials, carrying out ageing, carrying out mixing with water, carrying out maintenance and drying, carrying out extrusion and carrying out palletizing burning to obtain the perforated brick. The perforated brick has excellent compression and cracking resistance. Through use of an appropriate amount of an additive, product performances are improved. Through use of industrial waste, a production cost is saved, resource consumption and environmental pollution are reduced, and discharge treatment on building spoil, tailing mud, gangue and fly ash is realized.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a porous brick and a production method thereof. Background technique [0002] Fly ash is one of the largest industrial wastes in my country. With the development of the power industry, the discharge of fly ash from coal-fired power plants is increasing year by year. If a large amount of fly ash is not treated, it will generate dust. If it pollutes the air, it will cause river silting if it is discharged into the water system, and the toxic chemicals in it will cause harm to humans and organisms. [0003] Coal gangue is the inevitable waste residue of coal mines and coal washing plants. Around the project site, a large amount of coal gangue is accumulated every year, occupying a large amount of land, and exposed for a long time, emitting SO 2 Harmful gases such as sulfuric acid and heavy metals can pollute water sources. [0004] With the development of urban construction, const...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B33/132C04B33/135
CPCY02P40/60
Inventor 赵永宽杨旭
Owner GUIZHOU ANKAIDA IND