| 摘要 |
An improved method for extracting lithium from aluminum-lithium alloys includes providing an electrorefining cell which contains a cathode comprising a pure molten tin pool and a source of lithium from a molten aluminum-lithium alloy. The lithium is extracted from the Al-Li alloy by applying an electric current through the electrorefining cell whereby lithium dissolves from the molten Al-Li alloy into the tin pool and forms a tin-lithium alloy. The formed Sn-Li alloy may be recovered by casting under a salt layer and cooled to solidification. In a further aspect, the recovered Sn-Li alloy may be processed to further recover lithium therefrom by either electrolytic recovery in a separate electrolytic cell, vacuum distillation or a chemical extraction process.
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