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Powder solid waste granulation baking-free brick and preparation method thereof

A technology of unburned bricks and powders, which is applied in the field of resource utilization of solid waste building materials, can solve the problems that the real mechanical properties are not fully exerted and the strength of powder solid waste unburned bricks is low, so as to improve the strength and solve the problem of brittleness. , the effect of improving ductility and crack resistance

Pending Publication Date: 2021-08-27
徐州佳汇新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The stress of the microcracks cannot be released, resulting in pressure concentration, which causes a single microcrack to expand rapidly under a small load until it penetrates the matrix and undergoes structural damage. However, the true mechanical properties established by the active solid waste powder molding have not been fully utilized. , so that the strength of powder solid waste unburned bricks is very low

Method used

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  • Powder solid waste granulation baking-free brick and preparation method thereof
  • Powder solid waste granulation baking-free brick and preparation method thereof
  • Powder solid waste granulation baking-free brick and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Preparation of red mud aggregate particles

[0027] Taking the Bayer process red mud produced by the aluminum plant as the treatment object, by weight percentage, take 80% of the Bayer process red mud, 20% of P.O42.5 ordinary Portland cement, add water and water reducer to granulate, and obtain granules Solid waste particles with a diameter of 1~30mm; (2) Preparation of cementitious materials

[0028] In terms of weight percentage, take 80% of Bayer process red mud and 20% of P.O 42.5 ordinary portland cement, and mix them uniformly to obtain a cementitious material;

[0029] (3) Preparation of unburned bricks

[0030] In terms of weight percentage, take 20% of the cementitious material, 40% of the solid waste particles with a particle size of less than 5mm, and 40% of the solid waste particles with a particle size of greater than 5mm, add water and water reducer to mix, and use a brick making machine to press and form it. To avoid burning bricks.

Embodiment 2

[0032] (1) Preparation of red mud aggregate particles

[0033] The Bayer red mud produced by the aluminum plant is used as the processing object, and its particle size is less than 200 microns. In terms of weight percentage, take 90% of Bayer red mud, 10% of P.O 42.5 ordinary Portland cement, add water and water reducer to granulate, and make solid waste particles with a particle size of 1~30mm;

[0034] (2) Preparation of gelling material

[0035] In terms of weight percentage, take 70% of Bayer process red mud and 30% of P.O 42.5 ordinary Portland cement, and mix them uniformly to obtain a cementitious material;

[0036] (3) Preparation of unburned bricks

[0037] In terms of weight percentage, take 30% of the cementitious material, 20% of the solid waste particles with a particle size of less than 5mm, and 50% of the solid waste particles with a particle size of greater than 5mm, add water and water-reducing agent to mix, and use a brick making machine to press and form i...

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Abstract

The invention discloses a powder solid waste granulation baking-free brick and a preparation method thereof, and belongs to the technical field of solid waste building material resource utilization. The preparation method comprises the following steps: taking 80-90% by weight of powder solid waste and 10-20% by weight of a hydraulic cementing material, and adding water and a water reducing agent for granulation to prepare solid waste particles with the particle size of 1-30mm; taking 70-80% by weight of powder solid waste and 20-30% by weight of a hydraulic cementing material, and mixing the powder solid waste and the hydraulic cementing material to prepare a cementing material; and preparing the baking-free brickby taking the following components in percentage by weight: 20-30% of a cementing material, 20-40% of solid waste particles with the particle size of less than 5mm and 30-60% of solid waste particles with the particle size of greater than 5mm, adding water and a water reducing agent, mixing and molding. According to the method, powder solid waste granulation is used for blocking crack propagation, the mechanical property established by active solid waste powder forming can be exerted to the maximum extent, and a more practical and reliable new path is provided for powder solid waste recycling.

Description

technical field [0001] The invention belongs to the technical field of utilization of solid waste building material resources, and in particular relates to a powder solid waste granulated burn-free brick and a preparation method thereof. Background technique [0002] With the gradual development of industry, my country discharges a large amount of various industrial powder solid wastes including slag, fly ash, red mud, etc. every year. However, at present, the effective utilization rate of these powdery solid wastes in my country is very low, and they are usually disposed of by landfills and storage yards. In recent years, with the continuous discharge and accumulation of powder solid waste, it has occupied a large amount of agricultural land and caused serious pollution and damage to the surrounding ecological environment. How to effectively deal with the continuous accumulation of powder solid waste has become a difficult problem restricting the further development of s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B111/34
CPCC04B28/04C04B2201/50C04B2111/343C04B2111/00017C04B18/0409C04B2103/302C04B20/0016C04B20/0076
Inventor 薛琦姬永生秦梦赵行行张赫仇群彤马明明宋雷徐之山张洁张忠哲
Owner 徐州佳汇新材料科技有限公司
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