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Red mud autoclaved aerated concrete building block and preparation method of red mud autoclaved aerated concrete building block

A concrete block, autoclaved and aerated technology, which is applied in the field of building materials, can solve the problems of secondary waste of resources, large land, occupation, etc., and achieve the effects of shortening foaming time, increasing foaming time, and improving production efficiency

Inactive Publication Date: 2016-01-27
贵州源隆新型环保墙体建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These two methods not only occupy a large amount of land, but also make many available components in red mud unable to be used reasonably, resulting in secondary waste of resources

Method used

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  • Red mud autoclaved aerated concrete building block and preparation method of red mud autoclaved aerated concrete building block

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A red mud autoclaved aerated concrete block, the block is prepared by adding water to 5 parts of red mud, 60 parts of fly ash, 2 parts of gypsum, 35 parts of quicklime, 10 parts of cement and 0.03 parts of aluminum powder in parts by weight become.

[0027] The preparation method of red mud autoclaved aerated concrete block of the present invention comprises the following steps:

[0028] (1) Take red mud, fly ash and gypsum according to the above ratio, add water with 50% of the total weight of the dry material, and grind to make a mortar with a fineness of 0.08mm square hole sieve with 5% remaining and a specific gravity of 1.5Kg / L spare;

[0029] (2) quicklime is crushed, dry-milled into the remaining 5% quicklime powder of particle size 0.08mm square hole sieve for subsequent use;

[0030] (3) Mix mortar, quicklime powder and cement, stir until the temperature reaches 30°C, add aluminum powder, stir evenly, pour, stop in the hot room at a temperature of 40°C for 2 ...

Embodiment 2

[0032] A red mud autoclaved aerated concrete block, the block is prepared by adding water to 10 parts of red mud, 50 parts of fly ash, 6 parts of gypsum, 25 parts of quicklime, 8 parts of cement and 0.02 parts of aluminum powder in parts by weight become.

[0033] The preparation method of red mud autoclaved aerated concrete block of the present invention comprises the following steps:

[0034] (1) Take red mud, fly ash and gypsum according to the above ratio, add water with 50% of the total weight of the dry material, and grind to make a mortar with a fineness of 0.08mm square hole sieve and a specific gravity of 1.6Kg / L. spare;

[0035] (2) quicklime is crushed, dry-milled into the remaining 10% quicklime powder of particle size 0.08mm square hole sieve for subsequent use;

[0036] (3) Mix mortar, quicklime powder and cement, stir until the temperature reaches 35°C, add aluminum powder, stir evenly, pour, stop in the hot room at 45°C for 3 hours, cut, and autoclave at 1.25...

Embodiment 3

[0038] A red mud autoclaved aerated concrete block, the block is prepared by adding water to 15 parts of red mud, 15 parts of fly ash, 8 parts of gypsum, 10 parts of quicklime, 10 parts of cement and 0.01 part of aluminum powder in parts by weight become.

[0039] The preparation method of red mud autoclaved aerated concrete block of the present invention comprises the following steps:

[0040] (1) Take red mud, fly ash and gypsum according to the above ratio, add water with 50% of the total weight of the dry material, and grind to make a mortar with a fineness of 0.08mm square hole sieve and a specific gravity of 1.7Kg / L. spare;

[0041] (2) quicklime is crushed, dry-milled into 20% quicklime powder of particle size 0.08mm square hole sieve for subsequent use;

[0042] (3) Mix the mortar, quicklime powder and cement, stir until the temperature reaches 40°C, add aluminum powder, stir evenly, pour, stop in the hot room at a temperature of 60°C for 4 hours, cut, and autoclave ...

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Abstract

The invention discloses a red mud autoclaved aerated concrete building block and a preparation method of the red mud autoclaved aerated concrete building block. The building block is prepared from the following ingredients in parts by weight: 5 to 15 parts of red mud, 15 to 60 parts of pulverized fuel ash, 2 to 8 parts of plaster, 10 to 35 parts of quicklime, 5 to 10 parts of concrete, 0.01 to 0.03 parts of aluminum powder and water. The red mud is used for replacing phosphorus slag and undergoes a series of reactions with raw materials such as the pulverized fuel ash, the plaster, the quicklime, the concrete and the aluminum powder to prepare the aerated concrete building block; the product weight is light; the strength is high; the stability is good; the heat conductivity coefficient is low; the performance is excellent; the problem that the red mud cannot be easily and synthetically utilized is solved; the stored red mud can be fast digested; the goal of saving national resources is achieved, a lot of soil is also restored; in addition, the production process is environment-friendly and has no pollution; a new path is opened up for the comprehensive utilization of the red mud.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a red mud autoclaved aerated concrete block and a preparation method thereof. Background technique [0002] Autoclaved aerated concrete block is a new type of lightweight thermal insulation building material made of siliceous materials and calcareous materials through batching, pouring, gas expansion, cutting and steaming. It has been used in my country for 60 years With more than years of production and application history, it is widely used in industrial and civil buildings due to its light weight and good thermal insulation performance. It is currently a new type of wall material with the most mature production technology and application technology. Autoclaved aerated concrete blocks are light in weight, divided into 300-800kg / m3 according to different grades, which are only about 1 / 3 of clay bricks. High-rise buildings in areas with low ground resistance...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/02C04B38/02C04B18/08C04B18/04C04B22/06
CPCY02W30/91
Inventor 李毅毕敏何欣李长林张军陈国军胡益国张海芶人波邓琳琳李勇
Owner 贵州源隆新型环保墙体建材有限公司
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