METHOD FOR RECOVERING GALLIUM

摘要

PURPOSE:To recover easily Ga from a strongly basic aqueous soln. contg. Ga in a high yield by adding a metallic ion capturing agent having a specified functional group to the soln. and by applying a bubble separation method. CONSTITUTION:Gas is blown into a strongly basic aqueous soln. contg. Ga in the presence of a bubbling agent and a metallic ion capturing agent having an amidoxime group and/or group contg. a metallic salt of amidoxime. By this method, a very small amount of Ga ions in the strongly basic soln. contg. a large amount of Al and Na ions such as a sodium aluminate soln. can be recovered. Any compound having an amidoxime group and/or a group contg. a metallic salt or amidoxime may be used as the metallic ion capturing agent.