Building brick produced by using fly ash or residues obtained after burning domestic wastes, and production method thereof

A domestic waste incineration and waste incineration technology, applied in the field of building materials, can solve the problems of low utilization rate of fly ash, complicated process, high cost, etc., and achieve the effect of low cost, simple process and qualified frost resistance

Active Publication Date: 2015-12-16
SICHUAN FANGDA NEW BUILDING MATERIAL DEV CO LTD
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Problems solved by technology

The patent process is complicated, and the utilization rate of the fly ash after waste incineration is not high, and because the fly ash after waste incineration has complex components and light weight, in the prior art, it can only be processed by high-temperature sintering into bricks, which is different from steaming. Compared with pressing and curing into bricks, the cost is higher and the process is more difficult

Method used

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  • Building brick produced by using fly ash or residues obtained after burning domestic wastes, and production method thereof
  • Building brick produced by using fly ash or residues obtained after burning domestic wastes, and production method thereof
  • Building brick produced by using fly ash or residues obtained after burning domestic wastes, and production method thereof

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preparation example Construction

[0044] Wherein, the preparation method of described building brick comprises the following steps:

[0045] a. Raw material preparation: Weigh the ingredients according to the specified weight of the building bricks; and grind the cementing material into fine powder, so that more than 95% of the fine powder particle size is ≤0.08mm; the slag after domestic waste incineration should be divided into Sorting, crushing, and grading meet the requirements for use;

[0046] b. Digestion by adding water: add water to the raw material prepared in step a, stir and mix it into a uniform wet material, and enter the digestion bin to absorb water for digestion;

[0047] c. Pressing adobe: add water and stir the wet material from the digestion bin to form a molding material, and then send it to a brick press to press into adobe;

[0048] d. Curing: The adobe obtained in step c is cured in an autoclave with saturated steam with a gauge pressure ≥ 1.5 MPa to obtain an autoclaved brick; wherein...

Embodiment 1

[0053] 1. Preparation of autoclaved bricks

[0054] a. Raw material preparation: According to the number 1 to 4 in Table 1, the raw materials of each component are mixed, weigh each component, and grind the cementing material into a fine powder, so that more than 95% of the fine powder has a particle size of ≤0.08mm; domestic waste The slag after incineration should be sorted, crushed and classified to meet the requirements for use;

[0055] b. Digestion by adding water: add water to the raw material prepared in step a, stir and mix it into a uniform wet material, and enter the digestion bin to absorb water for digestion;

[0056] c. Pressing adobe: add water and stir the wet material from the digestion bin to form a molding material, and then send it to a brick press to press into adobe;

[0057] d. Curing: Curing the adobe obtained in step c in an autoclave with a gauge pressure ≥ 1.5MPa of saturated steam to obtain autoclaved wall bricks or floor tiles; wherein, the satura...

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Abstract

The invention relates to a building brick produced by using fly ash or residues obtained after burning domestic wastes, and a production method thereof, and belongs to the field of building materials. The building brick comprises, by weight, 45-50 parts of aggregates, 10-15 parts of a cementing material, 0-10 parts of an alkaline exciting agent and 30-35 parts of silica sand (with the SiO2 content being not smaller than 65%), wherein the aggregates are at least one of fly ash and residues obtained after burning domestic wastes; the cementing material comprises at least three of quicklime, quartz sand, coal ash, slag and waste bricks; and the alkaline exciting agent comprises at least two of cement, water glass, water quenching slag and soda ash. The building brick produced in the invention has excellent performances, and fully and highly utilizes fly ash and residues obtained after burning the domestic wastes, coal ash, slag and other industrial waste residues, the above produced product has the advantages of only need of high pressure saturated steam maintenance, energy saving, and cost reduction, and the pollutant toxicity leaching concentration of the solidified and stabilized product is low.

Description

technical field [0001] The invention discloses building bricks prepared from fly ash or slag after domestic garbage incineration, in particular autoclaved wall bricks and floor bricks, and a preparation method thereof, belonging to the field of building materials. Background technique [0002] With the rapid development of my country's economy, the speed of urbanization continues to accelerate, the people's living standards continue to improve, and the generation of urban domestic waste continues to increase. The harmless disposal of waste has become a top priority. Incineration has the advantages of fast processing speed, small footprint, good reduction and harmless effects, and has become one of the main methods of waste disposal. Another question. Since the fly ash left after domestic waste incineration contains a large amount of toxic and harmful heavy metals and salts such as Cd, Pb, Cu, Cr, Hg, etc., which can be leached by water, the fly ash after domestic waste inci...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/10C04B14/06C04B18/08C04B18/10
CPCY02W30/91
Inventor 黄华大方炎章潘朝权袁静裴亚弟向文朱兆铮
Owner SICHUAN FANGDA NEW BUILDING MATERIAL DEV CO LTD
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