Invention Grant
- Patent Title: Process for production of refined lithium metal
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Application No.: US17998591Application Date: 2022-01-21
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Publication No.: US12180602B2Publication Date: 2024-12-31
- Inventor: Maciej Jastrzebski
- Applicant: Li-Metal Corp.
- Applicant Address: CA Markham
- Assignee: Li-Metal Corp.
- Current Assignee: Li-Metal Corp.
- Current Assignee Address: CA Markham
- Agency: Williams Mullen
- Agent F. Michael Sajovec
- International Application: PCT/CA2022/050095 WO 20220121
- International Announcement: WO2022/155755 WO 20220728
- Main IPC: C25C3/02
- IPC: C25C3/02 ; C25C7/04 ; C25C7/06

Abstract:
A process for producing refined lithium metal can include: a) processing a lithium chemical feedstock material using an electrowinning apparatus to produce a crude lithium metal having a first purity; b) combining the crude lithium metal with a carrier material to create a lithium-rich feed alloy; c) introducing the lithium-rich feed alloy as a feedstock material to an electrorefining apparatus and processing the lithium-rich feed alloy using the electrorefining apparatus to separate lithium metal from the carrier material thereby producing i) a refined lithium metal having a second purity that is greater than the first purity and ii) a lithium-depleted alloy that comprises the carrier material and less lithium metal than the lithium-rich feed alloy; and d) extracting the lithium-depleted alloy from the electrorefining apparatus and recycling at least a portion of the lithium-depleted alloy to provide at least a portion of the carrier material used in step b).
Public/Granted literature
- US20230349061A1 PROCESS FOR PRODUCTION OF REFINED LITHIUM METAL Public/Granted day:2023-11-02
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