Patent ID: 11932550
Assignee: REED ADVANCED MATERIALS PTY LTD.
Field: Chemical engineering (Chemistry)
Classification: CPC C  B  H  Y | IPC B  C  H

Claim 0:
1. A method for the processing of lithium containing brines, the method comprising the method steps of:
(i) Passing a lithium containing brine to a filtration step to remove sulphates;
(ii) Passing a product of step (i) to a first ion exchange step to remove divalent impurities;
(iii) Passing a product of step (ii) to a second ion exchange step to remove boron impurities;
(iv) Passing a product of step (iii) to an electrolysis step to produce lithium hydroxide; and
(v) Passing a product of step (iv) to a crystallisation step that in turn provides a lithium hydroxide monohydrate product, wherein the crystallisation step (v) utilises high vacuum low temperature multiple effect crystallisation.