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Autoclaved aerated lime brick and preparation method thereof

An autoclaved aerated, ash brick technology, applied in ceramic products, climate sustainability, other household appliances, etc., can solve the problems of rising cost, cumbersome preparation steps, increased production cost, etc., to reduce the cost of raw materials, Reduce preparation steps and reduce the effect of producing finished products

Inactive Publication Date: 2016-01-27
吴江市范氏新型建材制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In its formula, fatty acid soap and acacia powder are added to increase the stability of the slurry. However, the addition of fatty acid soap and acacia powder will inevitably lead to an increase in production cost. In addition, it is necessary to mix fly ash and desulfurization The mixed grinding of gypsum powder makes the preparation steps more cumbersome and further increases the cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Add appropriate amount of water to 2400kg fly ash and 200kg gypsum to make a slurry with a specific gravity of 1.46g / mL.

[0031] (2), the digestion time is 13 minutes, the digestion temperature is 55 ℃, and the mass content of available calcium oxide is 58.98% 350kg of lime is crushed, ball milled to a fineness of 0.08mm and the sieve residue is less than 25%.

[0032] (3) Mix 1.5kg of aluminum powder with an appropriate amount of water to form an aluminum powder suspension.

[0033] (4) After mixing the treated lime, the treated slurry, 50kg cement and water evenly, add the aluminum powder suspension 1 minute before pouring, mix evenly to form a castable, and control the diffusion degree of the castable to 14cm.

[0034] (5) The mold is oiled to facilitate subsequent demoulding, and then the castable is poured into the mold, the pouring temperature is controlled at 48°C, and the pouring time is 4 minutes.

[0035] (6) Push the poured mold into the static stop cu...

Embodiment 2

[0039] (1) Add appropriate amount of water to 2400kg fly ash and 200kg gypsum to make a slurry with a specific gravity of 1.47g / mL.

[0040] (2), the digestion time is 5 minutes, the digestion temperature is 50 DEG C, and the mass content of available calcium oxide is 55% of 350kg of lime crushed, ball milled to a fineness of 0.08mm and the sieve residue is less than 25%.

[0041] (3) Mix 1.5kg of aluminum powder with an appropriate amount of water to form an aluminum powder suspension.

[0042] (4) After mixing the treated lime, the treated slurry, 50kg cement and water evenly, add the aluminum powder suspension 1 minute before pouring, mix evenly to form a castable, and control the diffusion degree of the castable to 17cm.

[0043] (5) The mold is oiled to facilitate subsequent demoulding, and then the pouring material is poured into the mold, the pouring temperature is controlled at 50°C, and the pouring time is 5 minutes.

[0044] (6) Push the poured mold into the static...

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PUM

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Abstract

The invention relates to an autoclaved aerated lime brick. Calculated in percentage by weight, the raw material formula of the autoclaved aerated lime brick comprises, 70-90% of fly ash, 0.5-5% of cement, 5-15% of lime, 1-10% of gypsum, and 0.01-0.2% of aluminium powder. By improving the formula and optimizing concrete technological parameters in the preparation method, fatty acid soap and gleditsia sinensis powder are not needed, also the usage amount of cement and aluminium powder is further reduced, environmental pollution is reduced, and the raw material cost is reduced. Additionally, fly ash and gypsum do not need mixed grinding, the preparation step is reduced, and the production cost is further reduced. Additionally, the performance indexes of the prepared autoclaved aerated lime brick are all qualified.

Description

technical field [0001] The invention relates to an autoclaved aerated ash brick and a preparation method thereof. Background technique [0002] Fly ash is the fine ash collected from the flue gas after coal combustion. Fly ash is the main solid waste discharged from combustion power plants. , 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 and pollute the atmosphere; Biohazard. [0003] The disposal cost of fly ash is high, and the investment in new waste ash dams is large. With the increasing improvement of national groundwater pollution prevention and control and solid waste pollution prevention and control regulations, the environmental protection requirements for new waste ash dams will be stricter in the future, and the investment in new waste ash dams The cost will be much higher than the existing waste ash dam, site selection will be more difficult, maintenance and o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/02C04B38/10C04B18/08C04B22/06C04B22/14C04B22/04
CPCY02W30/91
Inventor 范国强范国华
Owner 吴江市范氏新型建材制品有限公司
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