Method for preparing haydite of coal slack

A technology of coal gangue ceramsite and coal gangue, which is applied in ceramic products, clay products, applications, etc., can solve the problems of damage to the environment, high firing temperature, large energy consumption, etc., to save cultivated land, reduce land, and save energy. Effect

Inactive Publication Date: 2006-12-06
CHINA UNIV OF GEOSCIENCES (WUHAN)
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

However, the raw materials of the ceramsite preparation method include clay, which damages the environment; the amount of coal gangue added is small, and the consumption of coal gangue is small; the firing temperature is high, and energy consumption is large

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0041] The preparation method of high-volume coal gangue ceramsite of the present invention, its method step is:

[0042] (1) The raw materials are mixed, grinded, and passed through a 80-200 mesh sieve; the raw materials include coal gangue and feldspar, and the raw materials also include quartz or / and iron tailings; the weight percentage ratio of each component in the raw material is: coal gangue 30-95%, feldspar 5-70%, quartz 0-5%, iron tailings 0-10%.

[0043] The specific steps are: coarsely crush the raw materials with a vibrating mill and pass through a 40-mesh sieve; mix and pour into a ball mill tank, and add water 0.6-1 times the total weight of the raw materials, and wet ball mill; dry; 80-200 mesh sieve.

[0044] (2) Mix water into balls; directly drop water of 30% of the total weight of raw materials into the powder, and manually or mechanically form into balls (in industrial production, balls can be formed into balls).

[0045] (3) drying; place in an oven and ...

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Abstract

This invention relates to a method for manufacturing ceramic particles from coal gangues. The method comprises: (1) mixing the raw materials, grinding, and sieving with a 80-200 mesh sieve; (2) adding water and granulating; (3) drying; (4) heating to 900-1150 deg.C, and sintering; (5) cooling to obtain the final product. The method does not need much clay, and save the cropland.

Description

technical field [0001] The invention relates to a preparation method of ceramsite for construction, in particular to a preparation method of ceramsite with coal gangue as the main raw material. Background technique [0002] Ceramsite is a granular ceramic material made of clay with certain special properties as raw material, which releases gas after high-temperature melting, expands, and is finally roasted. The surface of ceramsite forms a layer of skin due to vitrification, and after cooling, it forms a light, hard product with obvious peak and nest structure, and its particle capacity is generally 750-1200kg / m 3 . The ceramsite produced by the rotary kiln is generally round in shape, with a black crest-like structure inside, and the outer skin is chestnut red and cyan. [0003] Clay is the main raw material for the production of ceramsite at first. At present, more and more industrial waste residues, waste materials, discarded mineral wastes, low-quality shale, etc. are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/13C04B33/132C04B14/04
CPCC04B38/009
Inventor 郭立王焰新严春杰
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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