| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a refining method for copper, which effectively removes Fe without employing an electrolytic refining step, and to provide a method for manufacturing a copper wire rod with the use of the molten copper obtained through the refining method. <P>SOLUTION: This refining method comprises a melting step of melting copper containing Fe, and a refining step of removing Fe from the molten metal while controlling the concentration of oxygen in the molten metal containing the molten copper to 1,000 to 3,000 ppm by weight ratio. The concentration of Fe in the molten copper metal containing Fe becomes lowest in an oxygen concentration range of 1,000 to 3,000 wt. ppm. Accordingly, Fe can be efficiently removed from the molten copper metal containing Fe, by controlling the concentration of oxygen in the molten metal to the above range. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
