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公开(公告)号：US20210163309A1
公开(公告)日：2021-06-03
申请号：US17053299
申请日：2019-05-03
Applicant: RIO TINTO IRON AND TITANIUM CANADA INC.
Inventor： Michel Paquin , Dimitrios Filippou
Abstract: The present disclosure provides a process for polishing at least one metal contaminant from a stock solution comprising Sc comprising the steps of a) contacting the stock solution with an ion exchange resin capturing Sc and the at least one metal contaminate so as to produce a metal ion exchange resin complex, and b) scrubbing the metal resin complex with a scrubbing solution comprising a carboxylate ion, so as to produce a Sc ion exchange resin complex and a spent carboxylate solution, which can be treated by electrodialysis to regenerate the carboxylate ion required for scrubbing.
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公开(公告)号：US12145855B2
公开(公告)日：2024-11-19
申请号：US17053299
申请日：2019-05-03
Applicant: RIO TINTO IRON AND TITANIUM CANADA INC.
Inventor： Michel Paquin , Dimitrios Filippou
Abstract: The present disclosure provides a process for polishing at least one metal contaminant from a stock solution comprising Sc comprising the steps of a) contacting the stock solution with an ion exchange resin capturing Sc and the at least one metal contaminate so as to produce a metal ion exchange resin complex, and b) scrubbing the metal resin complex with a scrubbing solution comprising a carboxylate ion, so as to produce a Sc ion exchange resin complex and a spent carboxylate solution, which can be treated by electrodialysis to regenerate the carboxylate ion required for scrubbing.
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