Invention Grant
- Patent Title: Process for producing crystallized metal sulfates
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Application No.: US17066769Application Date: 2020-10-09
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Publication No.: US10995014B1Publication Date: 2021-05-04
- Inventor: Robert John Fraser , Evangelos Stamatiou , Mark Joseph Machado , Henry Christian Immo von Schroeter , Mahmood Alemrajabi
- Applicant: Hatch Ltd. , Northvolt AB
- Applicant Address: CA Mississauga; SE Stockholm
- Assignee: Hatch Ltd.,Northvolt AB
- Current Assignee: Hatch Ltd.,Northvolt AB
- Current Assignee Address: CA Mississauga; SE Stockholm
- Agency: Finnegan, Henderson, Farabow, Garrett & Dunner, LLP
- Main IPC: C01G53/10
- IPC: C01G53/10 ; C01G51/10 ; C01G45/10 ; C22B26/12 ; H01M10/0525 ; C22B7/00 ; C22B3/00 ; H01M10/54
Abstract:
A process for generating a metal sulfate that involves crystallizing a metal sulfate from an aqueous solution to form a crystallized metal sulfate in a mother liquor with uncrystallized metal sulfate remaining in the mother liquor; separating the crystallized metal sulfate from the mother liquor; basifying a portion of the mother liquor to convert the uncrystallized metal sulfate to a basic metal salt; and using the basic metal salt upstream of crystallizing the metal sulfate. So crystallized, the generated metal sulfate may be battery-grade or electroplating-grade.
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