| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method for obtaining a crude Bi metal by removing Cu from a Bi-Cu metal having a Cu content of 5 to 30 mass%. <P>SOLUTION: In the method for recovering Bi, anhydrous sodium sulfide with a high melting point is added to a Bi-Cu metal in a melted state having a melting point of 700 to 870°C and having a Cu content of 10 to 20 mass%, for removing Cu. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
