| 摘要 |
A cathode (l) for use in an electrolytic cell for recovery of metal from mineral ores or concentrates, characterized by a conductive portion (l9), by a non-conductive covering (20) overlaying a portion of said conductive portion (l9), and by the non-conductive covering (20) comprising a perforated tubular member formed of heat shrinkable plastic material which is heat shrunk directly around said cathode (3) to leave only areas of said cathode (3) exposed which are positioned under perforations of said non-conductive covering. |
