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Building material converted from fly ash and preparation method thereof

A technology of conversion and treatment of building materials, applied in the direction of sustainable waste treatment, clay products, solid waste management, etc., can solve the problems that the brick-making process fails to achieve satisfactory results, cannot be well promoted and applied, and achieves Save precious land, reduce secondary pollution, and solve the effect of environmental protection

Inactive Publication Date: 2005-06-22
吴伟文 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some of the above-mentioned brick-making technologies using fly ash have not been well promoted and applied because they have not achieved satisfactory results in the brick-making process.

Method used

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  • Building material converted from fly ash and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

example 1-3

[0023] Example 1-3 is to prepare catalyst coagulant, and its composition and content are shown in Table 1.

[0024] Preparation method: Stir the raw materials well and evenly.

example 4

[0026] This example is to prepare a solid brick of 150×150×150mm. Raw material proportioning used: 100 kilograms of fine coal mine of Taizhou Power Plant (its chemical composition is shown in Table 2), 40 kilograms of catalytic coagulant of example 1, 60 kilograms of sand and 40 kilograms of water.

[0027] Preparation method: After mixing the raw materials in a mixer, pour them into a mold of 150×150×150mm, vibrate and extrude them, send the blanks out of the mold to the indoor curing room, heat and cure them with steam at 165°C for 13 hours, and then put them in the natural environment. Conservation yard, natural conservation for 28 days, to get the required products.

[0028] The product was tested by the material laboratory of Taizhou Highway Management Office: (1) load 520KN, single strength 23.1MPa; (2) load 530KN, single strength 23.6MPa; (3) load 560KN, single strength 24.9MPa, average strength 23.8 MPa.

example 5

[0030] This example is to prepare a sample of 240×115×53mm.

[0031] Raw material ratio used: 150 kilograms, 60 kilograms, 90 kilograms, 35 kilograms of water of the catalytic coagulant of Shanghai Minhang power plant fly ash (its chemical composition is shown in Table 2), example 2.

[0032] Preparation method: Mix the above raw materials in a mixer and inject them into a mold of 240×115×53mm, vibrate and extrude them, send the blanks out of the mold to the indoor curing room, heat and cure them with steam at 170°C for 10 hours, and then send them to The storage yard is naturally maintained for 28 days to obtain the required samples.

[0033] The samples were tested by the Construction Engineering Quality Inspection Station of Shanghai University.

[0034] Testing method: according to GB / 12542-92 compressive strength testing equipment, pressure testing machine, model NyL-600CT08, anti-analysis strength testing equipment, hydraulic universal testing machine, model WE-50GJ09. ...

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Abstract

The present invention relates to a building material made up by using fly-ash through the process of conversion treatment and its preparation method. The fly-ash, sand and catalytic coagulating agentformed from magnesite powder, magnesium chlorid aqueous solution, talcum powder, ferrous sulfate, sodium polyphosphate, phosphoric acid, aluminium trichloride and pigment pwoder are mixed, vibratino-extruded and formed, and cured so as to obtain the required building material. It can be substituted for clay sodid brick, and has extensive application range.

Description

technical field [0001] The invention relates to the utilization technology of fly ash, more specifically a technology for manufacturing building materials with fly ash. Background technique [0002] Industrial boilers such as thermal power plants discharge a large amount of fly ash that pollutes the environment every year. As we all know, the main component of fly ash is silicon dioxide, and it also contains a certain amount of radioactive elements and trace elements. Therefore, the impact of fly ash on the atmospheric environment and human health has aroused the concern of people from all walks of life. How to deal with it Governance and comprehensive utilization are getting more and more attention, a lot of research has been done, and there are some reports. At present, fly ash is mainly mixed with clay to produce fly ash clay bricks, but this technology still needs to consume a large amount of precious clay resources, and the calcination in the production process also ne...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/32
CPCC04B28/32C04B2111/00146Y02W30/91C04B14/042C04B14/06C04B18/08C04B22/12C04B22/149C04B22/16C04B22/165C04B40/0067C04B2103/54
Inventor 杨清沛吴伟文
Owner 吴伟文
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