Recovery of Cr.sub.2 O.sub.3 from a chromium bearing solution

摘要

Method for the recovery of high purity Cr.sub.2 O.sub.3 from a Na.sub. 2 CrO.sub.4 or Na.sub.2 Cr.sub.2 O.sub.7 solution by producing (NH.sub.4). sub.2 CrO.sub.4 by solvent extraction, evaporating the aqueous (NH.sub.4). sub. 2 CrO.sub.4 and igniting the resulting solids to provide high purity Cr.sub. 2 O.sub.3.