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Sulfuric acid fly ash brick and its production process

A technology of fly ash bricks and fly ash, which is applied in the field of sulfuric acid fly ash bricks and its production technology, can solve the problems of large coal consumption, non-compliance with internal requirements, and environmental pollution of fly ash autoclaved bricks, and achieve Reduce costs and pollution, improve efficiency, and have obvious effects

Inactive Publication Date: 2011-12-28
陈英辉
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the coal consumption of fly ash autoclaved bricks produced by this process is large, the output is low, and it pollutes the environment, which does not meet the inherent requirements of building a conservation-oriented society in the current scientific development concept of our country.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Sulfuric acid fly ash bricks, prepared from the following components in parts by weight:

[0022] 22 parts of fly ash, 8 parts of calcium carbide mud, 60 parts of stone powder weathered sand

[0023] Adding concentration by every 100 parts by weight of the mixture is 5 parts of industrial sulfuric acid solution of 3%

[0024] The preparation method of the sulfuric acid fly ash brick described in the invention is as follows: batching various materials in equal parts by weight, passing through a mixer, stirring with a wheel mill, forming embryos from an eight-hole 120-ton brick machine, and then entering the autoclave at 115°C Under high temperature steam curing, the steam pressure is 1.5 MPa, and the steam curing time is 7 hours.

Embodiment 2

[0026] Sulfuric acid fly ash bricks, prepared from the following components in parts by weight:

[0027] 25 parts of fly ash, 13 parts of calcium carbide mud, 64 parts of stone powder weathered sand

[0028] It is 3 parts of 5% industrial sulfuric acid solution that every 100 parts of mixed materials adding concentration in above-mentioned batching.

[0029] The preparation method of the sulfuric acid fly ash brick described in the invention is as follows: batching various materials in equal parts by weight, passing through a mixer, wheel grinding and stirring, forming embryos from an eight-hole 120-ton brick machine, and then entering the autoclave at 135 ° C. Under high temperature steam curing, the steam pressure is 1.5 MPa, and the steam curing time is 7 hours.

Embodiment 3

[0031] Sulfuric acid fly ash bricks, prepared from the following components in parts by weight:

[0032] 22-26 parts of fly ash, 8-14 parts of calcium carbide mud, 60-66 parts of stone powder weathered sand

[0033] It is 3 parts of 5% industrial sulfuric acid solution that every 100 parts of mixed materials adding concentration in above-mentioned batching.

[0034] The preparation method of the sulfuric acid fly ash brick described in the invention is as follows: batching various materials in equal parts by weight, passing through a mixer, stirring with a wheel mill, forming embryos from an eight-hole 120-ton brick machine, and then entering the autoclave at 150 ° C. Under high temperature steam curing, the steam pressure is 1.5 MPa, and the steam curing time is 7 hours.

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Abstract

The invention belongs to the technical field of building wall materials, and in particular relates to a sulfuric acid fly ash brick and a production process thereof. Sulfuric acid fly ash brick, prepared from the following components by weight: 22-26 parts of fly ash, 8-14 parts of calcium carbide mud, 60-66 parts of stone powder weathered sand, mixed in every 100 parts of the above ingredients Add 2-5 parts of industrial sulfuric acid solution with a concentration of 3%-6%. The invention is simple in operation, practical and reliable, energy-saving and emission-reducing, benefit-enhancing, and popular; this patent can solve the shortcomings of the original fly ash autoclaved bricks, which have a large coal consumption and low output, and can greatly reduce the coal used in production. Steam can reduce pollution, reduce emissions and increase production. For the unburned bricks that are naturally maintained, the amount of cement can be reduced and energy can be saved.

Description

technical field [0001] The invention belongs to the technical field of building wall materials, and in particular relates to a sulfuric acid fly ash brick and a production process thereof. Background technique [0002] At present, the existing production process of fly ash autoclaved bricks is: fly ash, calcium carbide mud, desulfurized lime slag or quicklime, stone powder or weathered sand and other aggregates are mixed by computer, stirred in an appropriate proportion, and then passed The brick machine produces brick embryos, enters the autoclave, and is cured for 9-12 hours under steam with a pressure of 9-11 kg. The finished product leaves the factory. During the maintenance process, high-temperature steam can stimulate the activity of fly ash, break the chemical bond of silicon dioxide, the main component of fly ash, and make silicon and calcium in quicklime produce calcium silicate with stable strength, so that the fly ash can be autoclaved The brick is strong and sta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00B28B1/00
Inventor 陈英辉
Owner 陈英辉
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