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Method for producing environment-friendly light-weight brick by utilizing wollastonite tailing

A wollastonite and non-burning brick technology, applied in the chemical industry, can solve problems such as unenvironmental protection and waste of resources, and achieve the effect of good pressure resistance and full utilization of resources

Inactive Publication Date: 2017-05-31
大连环球矿产股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because wollastonite is widely used in ceramics, chemical industry, metallurgy, papermaking, plastics, coatings and other fields, Dalian wollastonite tailings are produced during use, resulting in waste of resources and not environmentally friendly

Method used

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Embodiment Construction

[0015] The method of the present invention utilizing wollastonite tailings to produce environmentally friendly light-weight non-burning bricks comprises the following steps:

[0016] (1) Grind wollastonite tailings into powder, fully mix with industrial waste aluminum oxide powder, expanded perlite, and cement in proportion, grind wollastonite tailings into powder, particle size is 30-200 mesh, silica fume The amount of stone tailing powder added is 30-70% of the dry weight of the whole mixture. The waste industrial aluminum oxide powder has a particle size of 30-200 mesh, and the addition amount is 10-50% of the dry weight of the whole mixture. The particle size of expanded perlite is controlled at 15-100 mesh, and the loose density is 20-80kg / m 3 , the amount added is 3-30% of the dry weight of the whole mixture. The cement is 32.5R or 425R early-strength cement for construction, and the addition is 5-40% of the weight of the whole mixture dry material;

[0017] (2) Put w...

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Abstract

The invention provides a method for producing environment-friendly light-weight brick by utilizing wollastonite tailing. The method comprises the following steps: (1) grinding wollastonite tailing into powder, and fully mixing the wollastonite tailing, industrial waste aluminium oxide powder, expanded perlite and cement in proportion; (2) adding water into the mixture of the wollastonite tailing, the industrial waste aluminium oxide powder, the expanded perlite and the cement, and stirring the mixture in a stirring machine, wherein the stirring speed of a baking-free brick stirring machine is 10 to 120 rpm, and the stirring time is 3 to 50 minutes; (3) pressing into a blank by using a brick pressing machine; (4) curing and naturally drying, namely, naturally drying and curing for 3 to 9 days. According to the method for producing the environment-friendly light-weight brick by utilizing the wollastonite tailing disclosed by the invention, the wollastonite tailing is fully utilized; the manufactured light-weight baking-free brick is high in compression resistance; resources are fully utilized; the method is energy-saving and environment-friendly.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular to a method for reusing wollastonite tailings. Background technique [0002] Wollastonite belongs to a kind of chain metasilicate, and it is also fibrous and needle-like. Because of its special crystal structure, its properties are determined. Wollastonite has good insulation, high whiteness, good dielectric properties, and high heat resistance and weather resistance. Because wollastonite is widely used in ceramics, chemical industry, metallurgy, papermaking, plastics, coatings and other fields, wollastonite tailings are generated during use, which causes waste of resources and is not environmentally friendly. Contents of the invention [0003] In order to make full use of the wollastonite tailings, the invention provides a method for producing environmentally friendly light-weight non-burning bricks by using the wollastonite tailings. [0004] The technical solution adopted by ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00
CPCC04B28/00C04B2201/50C04B18/04C04B14/185C04B18/12
Inventor 姜山张梦显刘万龙
Owner 大连环球矿产股份有限公司
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