Method for preparing baking-free brick from industrial solid waste

A technology of solid waste and manufacturing method, applied in the field of non-steamed building non-burning bricks and its preparation, preparation of non-burning, which can solve the problems of endangering human health, silting river courses, affecting biological growth, etc.

Inactive Publication Date: 2018-10-02
遵义联合建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some wastes even silt up the river, pollute the water system, affect the growth of organisms, and endanger human health

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The present embodiment utilizes the method for unburned bricks of industrial solid waste, and by weight percentage, its raw material composition comprises: iron tailings (grain size is greater than 180 order particle weight accounts for 20% of total weight) 40%, fly ash 10%, Ceramsite 30%, water glass 13% (water glass modulus 2.8), polyaluminum phosphate accounts for 3% of water glass weight, sodium sulfate accounts for 1% of water glass weight, commonly used polycarboxylate water reducer (solid content is 40wt%) 0.5%, the balance of water.

[0020] The method for using unburned bricks from industrial solid waste, the process steps of the method are: raw material metering and mixing-vibration (or pressure) forming-curing-demolding-curing-finished product; after the above-mentioned raw materials are fully mixed, the Put the mixture into the burn-free brick mold, vibrate it compactly, and maintain it at 20°C for 24 hours, demould after curing, and continue curing at room ...

Embodiment 2

[0022] The present embodiment utilizes the method for unburned bricks of industrial solid waste, and by weight percentage, its raw material composition comprises: copper tailings (grain size is greater than 180 order particle weight accounts for 25% of total weight) 40%, fly ash 15%, Coarse sand 25%, water glass 9% (water glass modulus 2.6), sodium sulfate accounts for 2% of the weight of water glass, commonly used lignin water reducer 0.5%, water balance.

[0023] The method for using unburned bricks from industrial solid waste, the process steps of the method are: raw material metering and mixing-vibration (or pressure) forming-curing-demolding-curing-finished product; after the above-mentioned raw materials are fully mixed, the Put the mixture into the burn-free brick mold, vibrate it compactly, and maintain it at 20°C for 2 days, demould after curing, and continue to maintain it at room temperature for 28 days to obtain a finished product with a porosity of 45% and a compre...

Embodiment 3

[0025] Present embodiment utilizes the method for unburned brick of industrial solid waste, and by weight percentage, its raw material composition comprises: boron mud (grain size is greater than 180 order particle weight accounts for 18% of total weight) 57%, cement 10%, coarse sand 5% %, silicon phosphate 20%, commonly used polycarboxylate superplasticizer 1%, calcium formate 2%, and the balance of water.

[0026] The method for using unburned bricks from industrial solid waste, the process steps of the method are: raw material metering and mixing-vibration (or pressure) forming-curing-demolding-curing-finished product; after the above-mentioned raw materials are fully mixed, the The mixture was put into a non-fired brick mold, and pressure-molded at 5MPa, cured at 30°C for 24 hours, demolded after curing, and continued to be cured at room temperature for 28 days to obtain a finished product with a porosity of 43%. The compressive strength is 13.2MPa.

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Abstract

The invention relates to the field of a baking-free brick prepared from solid waste, and particularly relates to a method for preparing the baking-free brick from industrial solid waste, in particularto a baking-free and non-steamed brick prepared from industrial iron tailings, copper tailings, boric sludge and the like and a preparation method of the baking-free and non-steamed brick. The baking-free brick is prepared from raw materials in percentage by weight as follows: 25%-75% of industrial tailings, 5%-25% of at least one of cement, pulverized fuel ash and mineral waste residues, 0-60% of aggregate, 0-30% of an inorganic adhesive and 0-10% of other additives, wherein water accounts for 3%-20% of the sum of weight of the industrial solid waste and at least one of the cement, pulverized fuel ash and mineral waste residues. The industrial tailings are mixed with at least one of the cement, pulverized fuel ash and mineral waste residues, molding is performed by vibrating or under thepressure, demoulding is performed after maintenance, and when a product is maintained at the room temperature for 28 days or after strength reaches 5 MPa or higher, the baking-free brick is obtained.The baking-free brick prepared with the method has the characteristics of high strength, good freezing resistance and the like, and recycling of the industrial solid waste can be realized.

Description

technical field [0001] The invention relates to the field of industrial solid waste non-burning bricks, in particular to a method for manufacturing non-burning bricks using industrial solid waste, in particular to the preparation of non-burning and non-burning bricks by using industrial waste such as iron tailings, copper tailings, and boron mud. Steamed building unburned brick and its preparation method. Background technique [0002] The passive stockpiling of industrial solid waste not only occupies a large amount of land, causing a waste of manpower and material resources, but also many industrial waste residues contain water-soluble substances, which pollute soil and water bodies through leaching. Powdery industrial wastes fly with the wind, polluting the atmosphere, and some emit foul and poisonous gas. Some wastes even silt up river courses, pollute water systems, affect biological growth, and endanger human health. Contents of the invention [0003] The purpose of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/34
CPCC04B28/34C04B2111/00017C04B2201/50C04B18/12C04B18/08C04B18/027C04B12/04C04B22/147C04B2103/302C04B14/06C04B18/0418C04B7/00C04B24/04
Inventor 司传华
Owner 遵义联合建材有限公司
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