| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a recovering method in which, at the time of recovering metal components from a slag of copper or a copper alloy, the recovery is inexpensively and easily performed. SOLUTION: Slag generated at the time of melting or casting copper or a copper alloy and a refining agent containing one or more kinds of compounds selected from the groups consisting of cryolite, barium chloride, potassium chloride, sodium chloride and calcium fluoride, and a residual agent substantially composed of boric acid are mixed in such a manner that the weight ratio between the slag and the refining agent is controlled to (2,000:1) to <(10:1) and are melted. The metal components in the slag and the refining agent are separated to recover purified metal components.</p> |
