| 摘要 |
The invention provides a method of refining lithium-containing aluminum scrap metal. An electrolytic cell is formed using molten scrap as the anode (13,20), lithium or Al-Li as the cathode (12,24) and a chloride-based lithium electrolyte (14,21). The cell is operated at a temperature of about 700 DEG C and the lithium is transferred from the scrap (13,20) to the cathode (12,24). The depletion of lithium in the scrap (13,20) is signalled by an abrupt rise in voltage of the cell. The remaining scrap (13,20) at the anode can be used in the same way as conventional aluminum scrap and the pure Li or Al-Li alloy formed at the cathode (12,24) can be used as new material for the Al-Li alloy market. |
