Back to results
US 11,534,748 B2Granted
Process for recovery of lithium from brine
AssigneeStandard Lithium Ltd.
InventorCraig Johnstone Brown
Life of this patent
Estimating the term…
Abstract
A process for recovery of lithium ions from a lithium-bearing brine includes contacting the lithium-bearing brine with a lithium ion sieve (where that LIS includes an oxide of titanium or niobium) in a first stirred reactor to form a lithium ion complex with the lithium ion sieve, and decomplexing the lithium ion from the lithium ion sieve in a second stirred reactor to form the lithium ion sieve and an acidic lithium salt eluate.
Claims29
A process for recovery of lithium ions from a lithium-bearing brine, the process comprising:
- contacting the lithium-bearing brine with a lithium ion sieve in a first reactor to form a lithium ion complex with the lithium ion sieve;
- separating the lithium ion complex with the lithium ion sieve from the brine with a solid/liquid separation device;
- contacting the lithium ion complex with the lithium ion sieve with water before decomplexing in a second reactor;
- and
- decomplexing lithium ions from the lithium ion sieve in the second reactor to form an acidic lithium salt eluate solution separated from the lithium ion sieve;
- separating the lithium ion sieve from the acidic lithium salt eluate solution with a solid/liquid separation device;
- contacting the lithium ion sieve with water after decomplexing in the second reactor to obtain a regenerated lithium ion sieve and a dilute acid water wash;
- wherein the lithium ion sieve comprises an oxide of titanium or niobium;
- and
- wherein the process is conducted continuously.
7 more elements
Dependencies are inferred from the claim text.