Patent ID: 9222148
Filing Date: 2015-12-29
Classification: C01D,C22B,C25B

Abstract:
1. A method for producing a lithium product or intermediate product comprising: pre-treating a first feed liquid comprising lithium hydroxide to precipitate a lithium hydroxide hydrate from the first feed liquid; recovering the lithium hydroxide hydrate precipitate; re-solvating the lithium hydroxide hydrate precipitate using a solvent to produce a second feed liquid comprising lithium hydroxide in solution; feeding the second feed liquid to an electrolysis cell, the cell comprising at least one inorganic solid electrolyte membrane comprising ceramic material configured to selectively transport the lithium ions, the membrane positioned between an anolyte compartment configured with an anode and a catholyte compartment configured with a cathode; transporting the lithium ions from the second feed liquid, wherein lithium is transported through the inorganic solid electrolyte membrane under the influence of an electric potential to produce said lithium product or intermediate product; and wherein the polarity of the electrolysis cell is periodically reversed.