| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To avoid the difficulty of peeling-off of electrodeposited copper after planned blackout in an copper electro-refining plant using a permanent cathode (PC) system. <P>SOLUTION: In the copper electro-refining method by carrying out the planned blackout in the copper electro-refining plant for the electro-refining of copper by the PC system and after the periodical inspection, performing power recovery for returning current caused to flow in a copper electro-refining vessel to a normal operation value and starting the electro-refining again, the power recovery after the blackout is carried out by gradually increasing the current in multistage of two or more stages. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
