Processing of lithium containing brines
AssigneeReed Advanced Materials Pty Ltd
InventorYatendra Sharma
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Abstract
A method (10) for the processing of lithium containing brines, the method comprising the method steps of: (i) Passing a lithium containing brine (12) to a filtration step (14) to remove sulphates; (ii) Passing a product (16) of step (i) to a first ion exchange step (18) to remove divalent impurities; (iii) Passing a product (20) of step (ii) to a second ion exchange step (22) to remove boron impurities; (iv) Passing a product (24) of step (iii) to an electrolysis step (26) to produce lithium hydroxide (28); and (v) Passing a product (30) of step (iv) to a crystallisation step (32) that in turn provides a lithium hydroxide monohydrate product (34).
Claims14
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 from the lithium brine to a level of less than 0.1 ppm;
- (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.
Dependencies are inferred from the claim text.