SCANDIUM CONCENTRATE PRODUCTION METHOD

摘要

The present invention effectively recovers a scandium concentrate from an Al-Sc alloy. This scandium concentrate production method includes: a molten mixture production step (S1) in which an alloy that contains aluminum and scandium is brought into contact with chlorine and melted in order to produce a molten mixture of aluminum chloride and scandium chloride; a first electrolysis step (S2) in which the molten mixture is subjected to first electrolysis at a potential that is between the potential that causes aluminum to form a metal and the potential that causes scandium to form a metal and molten aluminum is produced; and a second electrolysis step (S3) in which, after the step in which molten aluminum is produced, the molten mixture is subjected to second electrolysis at a potential that makes it possible to recover scandium and a scandium concentrate is produced.