Title:
HIGH-IRON AND LOW-CALCIUM SILICATE CEMENT AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2021/190045
Kind Code:
A1
Abstract:
A high-iron and low-calcium silicate cement and a preparation method therefor. The preparation method comprises: mixing Bayer process red mud and limestone uniformly, grinding, and then sheeting to obtain a green sheet; calcining the green sheet and then quickly cooling to obtain cement clinker; and then, mixing with gypsum uniformly and grinding to prepare a high-iron and low-calcium silicate cement. The early strength of the cement is high, the later strength continuously increases, mechanical properties are good, and the amount of Bayer process red mud in the cement clinker is large, thereby greatly improving the utilization rate of Bayer process red mud solid waste; moreover, the burning temperature of the cement clinker is lower, thereby reducing the production costs of the cement, and reducing the emissions of polluting gases such as CO2, SO2, and NOx in a production process.
Inventors:
LIU SONGHUI (CN)
GUAN XUEMAO (CN)
WANG YULI (CN)
ZHU JIANPING (CN)
ZHANG HAIBO (CN)
GOU MIFENG (CN)
SHI CAIJUN (CN)
GUAN XUEMAO (CN)
WANG YULI (CN)
ZHU JIANPING (CN)
ZHANG HAIBO (CN)
GOU MIFENG (CN)
SHI CAIJUN (CN)
Application Number:
PCT/CN2020/141077
Publication Date:
September 30, 2021
Filing Date:
December 29, 2020
Export Citation:
Assignee:
UNIV HENAN POLYTECHNIC (CN)
International Classes:
C04B7/345; C04B7/24; C04B7/36
Foreign References:
| CN111393047A | 2020-07-10 | |||
| CN104003633A | 2014-08-27 | |||
| CN105658599A | 2016-06-08 | |||
| CN101891406A | 2010-11-24 | |||
| CN102092971A | 2011-06-15 | |||
| CN101439938A | 2009-05-27 | |||
| US20140311386A1 | 2014-10-23 | |||
| KR100404337B1 | 2003-11-01 |
Attorney, Agent or Firm:
BEIJING WUZHOUYANGHE & PARTNERS (CN)
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