Additive for increasing early activity index of nickel slag and preparation method thereof

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United States of America Patent

PATENT NO 11142481
APP PUB NO 20200361822A1
SERIAL NO

16814262

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Abstract

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An additive for increasing an early activity index of nickel slag and a preparation method thereof, belonging to the field of additive technologies, are provided. The preparation method includes: successively adding maleic anhydride and triethanolamine to a reactor; setting the heating temperature to 50° C. for reaction, where a large amount of heat is released during the reaction; when the reaction temperature decreases to 60° C. after heat is released in the reaction, allowing triethanolamine maleate to react with a solution of bromine in carbon tetrachloride; adding water to the mixture, where the weight percentage content of the added water is 60%; separating and removing carbon tetrachloride from water; and conducting uniform stirring to obtain the additive. A molar ratio of the maleic anhydride, the triethanolamine, and bromine is (0.2-1):1:(0.2-1), and a molar ratio of the maleic anhydride to the bromine is 1:1.

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Patent Owner(s)

Patent OwnerAddress
BEIJING UNIVERSITY OF TECHNOLOGYNO 100 PINGLEYUAN CHAOYANG DISTRICT BEIJING 100124 100124

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Han, Yuanzhong Beijing, CN 1 0
Lv, Yunfang Beijing, CN 1 0
Wang, Jianfeng Beijing, CN 280 3358
Wang, Yali Beijing, CN 91 198
Wang, Zhenguo Beijing, CN 64 238
Zhang, Shichao Beijing, CN 9 0

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