2nd Assignee: China National Building Material Group Co., Ltd.

1st Assignee: China Building Materials Academy Co., Ltd.

China National Building Material Group Co., Ltd.

Qinhuangdao Glass Industry Research and Design Institute Company Limited

Xiao Zhi

Min Wang

Yang Yu

Wen Ji Huang

Guang Yao

Xin Shen

Zhaijun Wen

Kunyue Zhang

Fu Chen

Xiaopeng An

Guoyong Xi

Jian Wang

A method for preparing Portland cement includes: respectively weighing iron slag, copper slag, vanadium slag, and nickel slag and grinding, to yield prefabricated iron slag, prefabricated copper slag, prefabricated vanadium slag, and prefabricated nickel slag; weighing mica and kaolinite, mixing, and grinding to obtain aluminous raw materials; evenly mixing the prefabricated iron slag and the aluminous raw materials, and calcining, to yield an iron-aluminum eutectic mineral; weighing the marble, fluorite, dolomite, and quartz, evenly mixing the marble, fluorite, dolomite, and quartz with the prefabricated copper slag, prefabricated vanadium slag, and prefabricated nickel slag to yield a first mixture; grinding the iron-aluminum eutectic mineral to yield powders, and calcining a second mixture of the first mixture and the powders, to yield the cement clinker; and cooling the cement clinker, and grinding a third mixture of the cooled cement clinker and the gypsum, to yield the Portland cement.

Method for preparing portland cement featuring early strength, low shrinkage, and low heat

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Beijing, China

Xiao Zhi