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Processing method for producing aerated concrete building block from fly ash

A technology of aerated concrete and processing methods, which can be applied in applications, household appliances, climate sustainability, etc., and can solve problems such as unreasonable production formula design, high production costs, and exhaust gas pollution, and improve the level of comprehensive utilization and utilization rate, the effect of increasing state taxation

Inactive Publication Date: 2014-01-01
ZUNYI XIANGHUI ENVIRONMENTAL PROTECTION IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a processing method for producing aerated concrete blocks using fly ash, which solves the problems of unreasonable design of production formula of aerated concrete blocks in the prior art, heavy waste gas pollution and high energy consumption during processing. Large, high production cost issues

Method used

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  • Processing method for producing aerated concrete building block from fly ash
  • Processing method for producing aerated concrete building block from fly ash

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] (1) Selection and ingredients of raw materials:

[0064] Select raw materials and batch according to the following mass percentages:

[0065] 70% fly ash, 25% quicklime, 4.5% gypsum, 0.1% aluminum powder paste, and the rest is saponin powder

[0066] (2) Ball milling and feeding and stirring:

[0067] The ingredients in step (1) were ball milled and pulverized, and mixed and stirred evenly to obtain a mixed material. The stirring temperature during feeding and stirring was 45°C;

[0068] (3) Pouring:

[0069] Casting the mixed material in step (2);

[0070] (4) Static stop for initial maintenance, steam recovery and waste heat utilization:

[0071] The temperature during the static stop and initial curing is 42.5°C, and the static stop and initial curing time is 1.75h, and the waste steam generated in the autoclaving curing process is recycled as a heat source, which is used as an energy source for maintaining the temperature during the static stop and initial curin...

Embodiment 2

[0078] (1) Selection and ingredients of raw materials:

[0079] Select raw materials and batch according to the following mass percentages:

[0080] 65% fly ash, 20% quicklime, 3% gypsum, 0.05% aluminum powder paste, and the rest is saponin powder;

[0081] (2) Ball milling and feeding and stirring:

[0082] The ingredients in step (1) were ball milled and pulverized, and mixed and stirred evenly to obtain a mixed material. The stirring temperature during feeding and stirring was 40°C;

[0083] (3) Pouring:

[0084] Casting the mixed material in step (2);

[0085] (4) Static stop for initial maintenance, steam recovery and waste heat utilization:

[0086] The temperature during static stop and initial maintenance is 40°C, and the time for static stop and initial maintenance is 1.25 hours. The waste steam generated in the autoclaving maintenance process is recycled as a heat source, which is used as energy for maintaining the temperature during static stop and initial maint...

Embodiment 3

[0093] (1) Selection and ingredients of raw materials:

[0094] Select raw materials and batch according to the following mass percentages:

[0095] 75% fly ash, 30% quicklime, 6% gypsum, 0.15% aluminum powder paste, and the rest is saponin powder;

[0096] (2) Ball milling and feeding and stirring:

[0097] The ingredients in step (1) were ball milled and pulverized, and mixed and stirred evenly to obtain a mixed material. The stirring temperature during feeding and stirring was 50°C;

[0098] (3) Pouring:

[0099] Casting the mixed material in step (2);

[0100] (4) Static stop for initial maintenance, steam recovery and waste heat utilization:

[0101] The temperature during static stop and initial maintenance is 45°C, and the time for static stop and initial maintenance is 2.25 hours. The waste steam generated in the autoclave curing process is recycled and used as a heat source, which is used as energy for maintaining the temperature during static stop and initial mai...

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Abstract

The invention discloses a processing method for producing an aerated concrete building block from fly ash, which mainly comprises the following steps: (1) selecting raw materials, and mixing; (2) performing ball milling, feeding, and stirring; (3) casting; (4) standing, performing primary curing, and recovering vapor to utilize the waste heat; (5) demolding, and cutting; and (6) performing autoclave curing. By optimizing the proportioning of the raw materials, the strength and freezing resistance of the autoclaved aerated concrete block are improved, and the utilization ratio of the waste of fly ash and the like is increased; and from the aspects of research on technical parameters of raw material proportioning and research on autoclaving, feeding and stirring technologies, the strength of the produced aerated concrete block is higher, and the production technique realizes better energy saving and consumption reduction. According to the processing technique, a production scale of producing 300,000 m<3> of aerated concrete block annually can be formed; and the processing method has favorable economic benefits and social benefits.

Description

technical field [0001] The invention relates to a processing method for producing aerated concrete block by using fly ash. Background technique [0002] At present, the use of solid clay bricks is prohibited in my country, and the use of lightweight, energy-saving, and heat-insulating aerated concrete block bricks is advocated. In the prior art, aerated concrete block products mainly have two deficiencies. One is that the formula is unreasonable, resulting in poor product strength and frost resistance; There are many ways to produce aerated concrete block products using fly ash, lime and gypsum as the main raw materials, but most of them use cement as one of the raw materials, and the ratio of raw materials is not reasonable, and the parameters in the processing process have not been mastered. , resulting in unsatisfactory finished product quality. [0003] As disclosed in CN103193447A, a kind of autoclaved aerated concrete brickwork made of fly ash and its preparation met...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/12C04B38/02C04B18/08
CPCY02W30/91
Inventor 陈志华
Owner ZUNYI XIANGHUI ENVIRONMENTAL PROTECTION IND
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