| 摘要 |
1297894 Producing aluminium by fusion electrolysis SWISS ALUMINIUM Ltd 29 April 1971 [1 May 1970] 12201/71 Heading C7B In a process for recovering Al from an alumina-containing fluoride melt in an electrolytic cell, each anode is replaced in turn by a fresh anode set in position at a height initially determined as the height at which it attains its normal current intensity in about one day. |
