INDIUM RECOVERY METHOD AND RECOVERED INDIUM

摘要

PROBLEM TO BE SOLVED: To provide a method for efficiently recovering high-grade In in which the mixing amounts of Cd and Sn can be minimized, from In scrap containing Cd and Sn and also to provide recovered In.

SOLUTION: The indium recovery method includes: a step of dissolving In scrap in hydrochloric acid (hydrochloric acid dissolution step); a step of adding metal In to the resultant solution to precipitate Sn and remove it (Sn removal step); a step of adding a sulfide source to the above solution to precipitate Cd sulfide and remove it (Cd removal step); and a step of recovering In from the solution (In recovery step). The recovered high-grade In which is recovered by using the method is also provided.

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