RECOVERY OF LITHIUM FROM AQUEOUS SOLUTIONS
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United States of America Patent
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Issued Date -
Mar 28, 2024
app pub date -
Oct 22, 2021
filing date -
Oct 27, 2020
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Abstract
The present invention relates to a method for the recovery of lithium products from an aqueous solution, the method comprising the steps of: (i.) contacting the solution with an alkaline material to precipitate a target amount of magnesium in the brine solution and separating the precipitated solids from an intermediate solution; (ii.) contacting the intermediate solution with a controlled amount of a hydroxide salt to precipitate magnesium in the intermediate solution; (iii.) contacting the intermediate solution with a controlled amount of sodium carbonate to precipitate impurities and separating the precipitated solids from a purified solution; and (iv.) recovering lithium products from the purified solution.
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