Process for recovery of lithium from brine
AssigneeAquatech International Corporation
InventorCraig Johnstone Brown
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Abstract
A process of recovering lithium from a brine containing lithium. The process comprises: providing the brine to a lithium-selective sorbent for adsorbing the lithium to the lithium-selective sorbent; eluting the lithium from the lithium-selective sorbent to form an eluate containing the lithium and multi-valent ions; exchanging the multi-valent ions in the eluate for monovalent ions to form a softened lithium solution; and crystallizing the monovalent ions to form a crystallized product and a concentrated lithium product.
Claims24
A process of recovering lithium from a brine containing lithium, the process comprising
- providing the brine to a lithium-selective sorbent for adsorbing the lithium to the lithium-selective sorbent;
- eluting the lithium from the lithium-selective sorbent to form an eluate containing the lithium and multi-valent ions;
- exchanging the multi-valent ions in the eluate for monovalent ions to form a softened lithium solution using a strong acid cation exchange resin;
- and
- crystallizing the monovalent ions to form a crystallized product and a concentrated lithium product,
- further wherein the process includes a step of combining the crystallized product with water to form a regenerant solution and wherein the regenerant solution is provided to the strong acid cation exchange resin for regenerating the resin after the exchanging step.
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Dependencies are inferred from the claim text.