公开(公告)号：WO2022119565A1

公开(公告)日：2022-06-09

申请号：PCT/US2020/062855

申请日：2020-12-02

Applicant: U.S. BORAX INC.

Inventor： PATWARDHAN, Amit ,  SHINDE, Sandip ,  WATTENBARGER, Allen ,  SUASNABAR, Daniel

IPC: C22B26/12 ,  C22B26/00 ,  C22B3/26

Abstract: A method of extracting lithium from a lithium-bearing material including: (i) mixing the lithium-bearing material, gypsum, a sulfur-containing material, and a calcium-containing material and forming a feed mixture having a predetermined composition; (ii) roasting the mixture and forming a roasted mixture including a water-soluble lithium compound; and (iii) leaching lithium from the water-soluble lithium compound and forming a lithium-containing leachate by mixing the aqueous solution and the water-soluble lithium compound.

公开(公告)号：WO2022119927A2

公开(公告)日：2022-06-09

申请号：PCT/US2021/061415

申请日：2021-12-01

Applicant: U.S. BORAX INC.

Inventor： PATWARDHAN, Amit ,  SHINDE, Sandip ,  WATTENBARGER, Allen

IPC: C01D15/08 ,  C25B1/16 ,  C25B15/08 ,  B01D2009/0086 ,  B01D9/0022 ,  B01D9/004 ,  B01D9/0063 ,  C01D7/24 ,  C01D7/26 ,  C01P2006/80

Abstract: A method of forming lithium carbonate from a lithium-bearing solution including: evaporating the lithium-bearing solution to precipitate a first group of impurities; removing the first group of impurities to form a first purified solution; and performing a flash crystallisation step within a predetermined temperature range to crystallise a second group of impurities from the first purified solution; removing the second group of impurities from the first solution to form a second purified solution, wherein at least 90wt% of lithium is recovered from the first purified solution; and reacting the second purified solution with a metal carbonate to form lithium carbonate of at least 90wt% purity.

公开(公告)号：WO2022119921A1

公开(公告)日：2022-06-09

申请号：PCT/US2021/061406

申请日：2021-12-01

Applicant: U.S. BORAX INC.

Inventor： PATWARDHAN, Amit ,  SHINDE, Sandip ,  WATTENBARGER, Allen ,  SUASNABAR, Daniel

IPC: C22B26/12 ,  C22B3/04 ,  C22B3/06

Abstract: A method of extracting lithium from a lithium-bearing material including: (i) mixing the lithium-bearing material, gypsum, a sulfur-containing material, and a calcium-containing material and forming a feed mixture having a moisture content of at least 20 wt%; (ii) drying the feed mixture to form a dried mixture having a moisture content of less than 20wt%; (iii)roasting the dried mixture and forming a roasted mixture including a water-soluble lithium compound; and (iv) leaching lithium from the water-soluble lithium compound and forming a lithium-containing leachate by mixing the aqueous solution and the water-soluble lithium compound.

公开(公告)号：WO2022119564A1

公开(公告)日：2022-06-09

申请号：PCT/US2020/062844

申请日：2020-12-02

Applicant: U.S. BORAX INC.

Inventor： PATWARDHAN, Amit ,  SHINDE, Sandip ,  WATTENBARGER, Allen

IPC: C01D15/08 ,  C22B3/44 ,  C22B26/12 ,  B01D9/02

Abstract: A method of forming lithium carbonate from a lithium-bearing solution including: evaporating the lithium-bearing solution to precipitate a first group of impurities; removing the first group of impurities to form a first purified solution; and performing a flash crystallisation step within a predetermined temperature range to crystallise a second group of impurities; removing the second group of impurities from the first solution to form a second purified solution, wherein at least 95wt% of lithium is recovered from the first purified solution; and reacting the second solution with a metal carbonate to form lithium carbonate of at least 90wt% purity.