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Coal gangue ceramsite and preparation method thereof

A technology of coal gangue ceramsite and coal gangue, which is applied in the direction of ceramic products, clay products, and other household appliances, can solve the problems of low stability and strength, and achieve the effect of improving the overall strength and chemical stability

Inactive Publication Date: 2020-08-14
中云芯材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The gangue ceramsite prepared by the existing technology often has low stability and strength

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] A coal gangue ceramsite according to an embodiment of the present invention is characterized in that the raw materials of the coal gangue ceramsite are proportioned by weight percentage: 75-95% of coal gangue, 5-12% of fired clay, and 3% of sintering aid -9%, quartz tailings 15-25%, forming agent 1-5%, graphite powder 2-8%.

[0020] Through above-mentioned scheme of the present invention:

[0021] (1) Coal gangue, fired clay, sintering aid and quartz tailings are mixed according to the ratio described in claim 1;

[0022] (2) The raw materials in step 1 are fully ground and mixed;

[0023] (3) Add a molding agent corresponding to the above-mentioned ground raw material, and granulate and form;

[0024] (4) high temperature calcination;

[0025] (5) After the calcined ceramsite cools down, use screening machines with different particle sizes to sieve to obtain corresponding ceramsite products.

[0026] Through the above scheme of the present invention, the ratio of...

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PUM

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Abstract

The invention discloses coal gangue ceramsite, which is prepared from the following raw materials in percentage by weight: 75 to 95 percent of coal gangue, 5 to 12 percent of fired clay, 3 to 9 percent of a sintering aid, 15 to 25 percent of quartz tail mud, 1 to 5 percent of a forming agent and 2 to 8 percent of graphite powder. According to the coal gangue ceramsite and the preparation method thereof provided by the invention, the graphite powder is added in the ceramsite preparation process and calcined at the same time, so that the overall strength of the ceramsite is effectively improved,and meanwhile, the chemical stability of the ceramsite is also improved.

Description

technical field [0001] The invention relates to the field of ceramsite preparation methods, in particular to a coal gangue ceramsite and a preparation method thereof. Background technique [0002] Coal gangue is black waste rock with low carbon content discharged during the coal mining process. It is the solid waste with the largest discharge in my country. Its discharge and accumulation not only occupy a large amount of cultivated land, but also cause great pollution to the surface and the atmosphere. The chemical composition of coal gangue is similar to that of clay, and coal gangue contains relatively high carbon and sulfur, and the loss on ignition is relatively large. Only in a certain temperature range can a sufficient amount of molten material with suitable viscosity be produced and have expansion properties. According to its characteristics, my country has developed gangue ceramsite. [0003] Coal gangue ceramsite is produced by crushing, preheating, swelling, cool...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/00C04B33/13C04B33/132C04B33/32
CPCC04B33/131C04B33/132C04B33/1321C04B33/32C04B38/009C04B2235/425Y02P40/60
Inventor 齐正张振甲薛克娟于立安杨齐董立健齐春昊王宝立秦晋垣
Owner 中云芯材料有限公司