System and Method For Recovering Boron Values From Plant Tailings
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United States of America Patent
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Issued Date -
Oct 18, 2012
app pub date -
Apr 15, 2011
filing date -
Apr 15, 2011
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Abandoned
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Abstract
A method is provided for recovering boric acid from a solution containing boric acid and at least one lithium compound. The method comprises (a) passing the solution through an ion exchange resin such that boric acid accumulates on the resin; (b) removing the boric acid from the resin with an aqueous alcohol solution, thus obtaining a first solution comprising an alcohol, boric acid, and water; (c) converting at least a portion of the boric acid to trimethyl borate, thereby obtaining a second solution; (d) distilling an azeotrope from the second solution, wherein the azeotrope contains trimethyl borate; and (e) recovering boric acid from the azeotrope.
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