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Light refractory aggregate resistant to thermal shock
The invention discloses a production process of a light refractory aggregate resistant to thermal shock. The production process comprises the steps that by weight, 65-71 parts of alumina, 18-21 parts of fused magnesia, 2-3 parts of quartz sand, 0.5 part of sialon powder, 0.8-1.1 parts of silicon carbide micro-powder, 1.2 parts of 99.9% by mass of alpha-Al2O3 micro-powder, 0.9 part of kyanite micro-powder and 0.3 part of sericite are used as main raw materials, the temperature is kept to be 35 DEG C after uniform ball milling, then 28 parts of Suzhou clay, 0.8-1.1 parts of SDBS foaming agent, 0.5 part of sodium tripolyphosphate and 6 parts of dextrin are added and are continuously and uniformly stirred to prepare mixed slurry; the prepared slurry undergoes casting molding in a mold, demolding is performed after natural drying, the dried wet blank is fired in an electric furnace, firing operation is divided into two steps, heat preservation is carried out for 2 hours, and then a finished product is obtained with cooling of the furnace. The light refractory aggregate has very outstanding thermal shock resistance performance, better water resistance performance, relatively higher strength and good thermal insulation performance.
Light refractory aggregate resistant to thermal shock
The invention discloses a production process of a light refractory aggregate resistant to thermal shock. The production process comprises the steps that by weight, 65-71 parts of alumina, 18-21 parts of fused magnesia, 2-3 parts of quartz sand, 0.5 part of sialon powder, 0.8-1.1 parts of silicon carbide micro-powder, 1.2 parts of 99.9% by mass of alpha-Al2O3 micro-powder, 0.9 part of kyanite micro-powder and 0.3 part of sericite are used as main raw materials, the temperature is kept to be 35 DEG C after uniform ball milling, then 28 parts of Suzhou clay, 0.8-1.1 parts of SDBS foaming agent, 0.5 part of sodium tripolyphosphate and 6 parts of dextrin are added and are continuously and uniformly stirred to prepare mixed slurry; the prepared slurry undergoes casting molding in a mold, demolding is performed after natural drying, the dried wet blank is fired in an electric furnace, firing operation is divided into two steps, heat preservation is carried out for 2 hours, and then a finished product is obtained with cooling of the furnace. The light refractory aggregate has very outstanding thermal shock resistance performance, better water resistance performance, relatively higher strength and good thermal insulation performance.
Light refractory aggregate resistant to thermal shock
ZHU XIAOMING (author)
2016-02-03
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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