The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 10, 2023
Filed:
Aug. 07, 2019
Sobute New Materials Co., Ltd., Nanjing, CN;
Zhenjiang Sobute New Material Co., Ltd., Zhenjiang, CN;
Jiaping Liu, Nanjing, CN;
Shouzhi Zhang, Nanjing, CN;
Yong Zhang, Nanjing, CN;
Yujiang Wang, Nanjing, CN;
Rui Wang, Nanjing, CN;
SOBUTE NEW MATERIALS CO., LTD, Nanjing, CN;
ZHENJIANG SOBOTE NEW MATERIALS CO., LTD., Zhenjiang, CN;
Abstract
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.