Casting used sand composite brick and preparation method

A composite brick and old sand technology, which is applied in the field of casting old sand composite bricks and its preparation, can solve the problems of dust generation, air pollution, biological hazards, etc., and achieve the goals of reducing mass use, reducing pollution, effective treatment and recycling Effect

Inactive Publication Date: 2016-08-10
刘建荣
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If a large amount of fly ash is not treated, it will generate dust and pollute the atmosphere; if it is discharged into the water system, it will cause river silting, and the toxic chemicals in it will also cause harm to humans and organisms

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A cast old sand composite brick is made from the following raw materials: clay sand 55kg; fly ash 15kg; stone chips 25kg; quicklime 15kg; naphthalene-based water reducing agent 0.5kg.

[0024] Preparation method: weigh the raw materials according to the proportion and mix them evenly, add water during the mixing process to make a mixture, the water content of the mixture is 10%; then carry out aging treatment, the aging time is 12h; the aged The mixture is pressed and molded in the molding equipment to form a composite brick adobe. The molding pressure is 20MPa; the adobe is placed in the autoclaved equipment after standing for 24 hours. The pressing time is 5 hours for autoclave treatment to obtain cast old sand composite bricks.

Embodiment 2

[0026] A casting old sand composite brick is made of the following raw materials: 45kg of quartz sand; 25kg of fly ash; 15kg of stone chips; 10kg of quicklime; 3kg of cement; 1.5kg of polycarboxylate superplasticizer.

[0027] Preparation method: weigh the raw materials according to the proportion and mix them evenly, add water during the mixing process to make a mixture, the water content of the mixture is 15%; then carry out aging treatment, the aging time is 10h; the aged The mixture is pressed and molded in the molding equipment to form composite brick adobe, the forming pressure is 25MPa; the adobe is placed in the autoclaved equipment after standing for 12 hours, the autoclaved pressure is 1.2MPa, the autoclaved temperature is 100℃, and the autoclaved The pressing time is 10h for autoclave treatment to obtain cast old sand composite bricks.

Embodiment 3

[0029] A cast old sand composite brick is made from the following raw materials: resin sand 50kg; fly ash 20kg; stone chips 20kg; quicklime 13kg; cement 2kg; aliphatic water reducer 1kg.

[0030] Preparation method: weigh the raw materials according to the proportion and mix them evenly, add water during the mixing process to make a mixture, the water content of the mixture is 13%; then carry out aging treatment, the aging time is 8 hours; the aged The mixture is pressed and molded in the molding equipment to form a composite brick adobe. The molding pressure is 15MPa; the adobe is placed in the autoclaved equipment after standing for 5 hours. The pressing time is 8 hours for autoclave treatment to obtain cast old sand composite bricks.

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Abstract

The invention relates to a casting used sand composite brick and a preparation method. The brick is prepared with casting used sand, fly ash, stone chips, quick lime, cement and additives as raw materials and through the steps of mixing, aging, shaping, steam pressing and the like. The casting used sand composite brick is mainly produced from the casting used sand with maximum blending quantity reaching 55%, and also the fly ash emitted from power generation as a main raw material, so that industrial waste residue is utilized well and the casting used sand and the fly ash are effectively treated and recycled and reused, thereby reducing environmental protection emission load of enterprises. The composite creates considerable economic value. The method comprehensively utilizes the casting used sand very well and has excellent promoting prospect.

Description

technical field [0001] The invention belongs to the technical field of resource utilization of industrial waste residues, and in particular relates to a cast old sand composite brick and a preparation method thereof. Background technique [0002] As my country's land resources are in short supply, the country has gradually strengthened the protection of land resources, restricted the use of clay products or banned solid clay bricks, and the technology of using clay to sinter into bricks in the past will be eliminated and replaced by non-fired brick technology. Non-sintered brick technology is mainly high-pressure forming technology and autoclave curing technology, which is a green and environmental protection technology strongly advocated by the state. [0003] my country is a big country in foundry production. About 1 ton of waste sand is discharged for every ton of casting production. About 30 million tons of used foundry sand is produced domestically every year. A large a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/12
CPCC04B28/12C04B7/00C04B14/04C04B18/08C04B18/14C04B2103/302
Inventor 刘建荣
Owner 刘建荣
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