Lithium recovery
AssigneeNovalith Technologies Pty Limited
InventorsAndrew HARRIS, Mohammad ASSEFI, Jonathan GOODMAN
Life of this patent
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Abstract
According to the present invention there is provided processes for the recovery of lithium from end-of-life lithium-ion batteries and battery matter. A representative process resides in a process for separating lithium from lithium ion batteries before undertaking hydrometallurgical or pyrometallurgical processing, the process comprising: providing a black mass (BM) or shredded battery material (SBM) that includes cation and anion components; commixing the BM or SBM with an admixture that includes water and supercritical carbon dioxide; and separating an aqueous leachate and a lithium-leached BM or SBM, where the aqueous leachate includes a lithium carbonate and/or bicarbonate.
Claims27
A process for separating lithium from lithium ion batteries before undertaking hydrometallurgical or pyrometallurgical processing, the process comprising:
- providing a black mass (BM) or shredded battery material (SBM) that includes cation and anion components;
- commixing the BM or SBM with an admixture that includes water and supercritical carbon dioxide;
- and
- separating an aqueous leachate and a lithium-leached BM or SBM, where the aqueous leachate includes a lithium carbonate and/or bicarbonate.
A process comprising:
- comminuting a plurality of lithium-ion cells in water thereby providing a slurry that includes a black mass (BM) or shredded battery material (SBM) and water;
- commixing the slurry with supercritical carbon dioxide;
- and
- separating an aqueous leachate and a lithium-leached BM or SBM, where the aqueous leachate includes a lithium carbonate and/or bicarbonate.
A process comprising:
- comminuting a plurality of lithium-ion cells in a solution of water and carbon dioxide thereby providing a slurry that includes a black mass (BM) or shredded battery material (SBM), lithium bicarbonate, water, and carbon dioxide;
- and
- separating an aqueous leachate from the BM or SBM, where the aqueous leachate includes the lithium bicarbonate.
Dependencies are inferred from the claim text.