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

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

Xiaopeng An

Min Wang

Yang Yu

Wen Ji Huang

Guang Yao

Xin Shen

Zhaijun Wen

Kunyue Zhang

Xiao Zhi

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

Xiaopeng An