Method for preparing light magnesium oxide and calcium oxide and application thereof for preparing calcium-magnesium composite expanding agent

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United States of America Patent

PATENT NO 11548818
APP PUB NO 20210163352A1
SERIAL NO

17044298

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Abstract

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Disclosed are a method for separately preparing light magnesium oxide and calcium oxide by using dolomite and an application thereof in preparation of a calcium-magnesium composite expanding agent. In the method for preparing light magnesium oxide and calcium oxide, based on the difference in decomposition temperature between magnesium carbonate and calcium carbonate during the calcination and decomposition of dolomite and the difference in the weight of the materials after decomposition, the effective separation of magnesium oxide and calcium oxide is realized by a one-step method, thus separately preparing light magnesium oxide and light calcium oxide. The calcium-magnesium composite expanding agent is prepared by using the foregoing light magnesium oxide and calcium oxide. On the one hand, the present invention solves the problem of the limited origin of the light magnesium oxide raw material of the magnesium expanding component in the calcium-magnesium composite expanding agent.

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Patent Owner(s)

Patent OwnerAddress
SOBUTE NEW MATERIALS CO LTDNO 118 LIQUAN ROAD CHUNHUA STREET JIANGNING DISTRICT NANJING JIANGSU 211103 NANJING CITY JIANGSU PROVINCE 211103
ZHENJIANG SOBOTE NEW MATERIALS CO LTDNO 1 BISHAN INDUSTRIAL CONCENTRATION ZONE YIZHUANG VILLAGE BIANCHENG TOWN JURON ZHENJIANG 212416

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Liu, Jiaping Nanjing, CN 19 8
Wang, Rui Nanjing, CN 821 4323
Wang, Yujiang Nanjing, CN 39 84
Zhang, Shouzhi Nanjing, CN 1 0
Zhang, Yong Nanjing, CN 774 4505

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