Method and system for producing low-alkalinity sulphoaluminate cement with new mineral system using steel slag

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United States of America Patent

PATENT NO 11396478
APP PUB NO 20210130234A1
SERIAL NO

17257112

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A method and system for producing low-alkalinity sulphoaluminate cement with a new mineral system using steel slag. The method includes the following steps: evenly mixing and homogenizing ground steel slag with dry desulfurization gypsum, aluminum ash and carbide slag according to a set ratio; and conveying the homogenized raw meal to a rotary kiln for calcination to obtain cement clinker, where the calcination temperature is 1200° C.-1270° C., and the calcination time is 20-60 min; the alkalinity modulus of the homogenized cement raw meal is 0.81-0.9, and the Fe2O3 content is 8-13%. The method breaks through the requirements on contents of calcium, aluminum and iron in traditional sulphoaluminate cement production, and realizes application of a large amount of steel slag.

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SHANDONG UNIVERSITYNO 17923 JINGSHI ROAD LIXIA DISTRICT SHANDONG JINAN 250061

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Li, Jingwei Jinan, CN 58 1195
Mao, Yanpeng Jinan, CN 2 0
Wang, Wenlong Jinan, CN 31 100
Wang, Xujiang Jinan, CN 2 0
Wu, Changliang Jinan, CN 2 2
Zhang, Chao Jinan, CN 580 7261

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