METHOD FOR SEPARATING AND RECOVERING Sb AND Bi

摘要

PROBLEM TO BE SOLVED: To provide a method by which Sb and Bi in a copper electrolytic solution can be separated and recovered using simple equipment with superior selectivity and the reuse of an eluate is made possible.

SOLUTION: The copper electrolytic solution is brought into contact with a chelate resin to make the chelate resin adsorb Sb and Bi, and a hydrochloric acid type eluate is brought into contact with the chelate resin to elute Sb and Bi. An Sb metal is recovered by dry treatment from Sb neutralized slag recovered by neutralizing the resultant Sb- and Bi-containing eluant within a pH range of 1.5 to 3.0. Then a Bi metal is recovered by dry treatment from Bi neutralized slag recovered by neutralizing the eluant within a pH range of 4 to 5. Further, the concentration of chlorine in the liquor after the Bi neutralization is regulated to 6 mol/L, and the liquor is reused as a chelate resin eluate.

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