Kunming applied for the patent of removing cobalt from nickel chloride solution, which has a good separation effect on impurity ions such as cobalt ions and nickel in nickel chloride solution

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According to the information of the State Intellectual Property Office, Kunming Leaden New Material Technology Co., Ltd. applied for a patent entitled "Method of removing cobalt from nickel chloride solution", adding nickel chloride solution to the extraction organic phase for extraction, cobalt ions are moved to the supported organic phase, and nickel ions are retained in the water phase raffinate; The extractant in the extracted organic phase comprises N235, P507 and Cyphos IL 101 (trihexyltetradecylphosphine chloride). This method uses N235, P507 and Cyphos IL 101 as co-extractors to extract nickel chloride solution, which has a good separation effect on impurity ions such as cobalt ions in nickel chloride solution and nickel, and avoids the saponification step of traditional extraction, reduces the use of alkali and the discharge of waste lye. Therefore, it is economical and environmentally friendly, and can be applied to complex systems. The addition of Cyphos IL 101 ionic liquid in the collaborative extraction system can improve the stability of the whole extraction system, enhance the extraction ability of organic phase, and reduce the impact on the environment.

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