Two stage lithium transport process

Details Two stage lithium transport process Two stage lithium transport process

1989-10-13

1991-12-10

Valentine, Donald R.

Chemistry: electrical and wave energy

Processes and products

204 68, 204 71, 204140, 75681, C25C 302, C25C 306

Patent

active

050715232

ABSTRACT:
The present invention provides a process for purifying aluminum and lithium including recovering aluminum and lithium through layered electrolysis through a lithium transport cell to form purified lithium metal and residual aluminum and purifying the residual aluminum through a second stage layered electrolysis through a second stage lithium transport cell to form purified aluminum metal. In one aspect, the process provides the second stage step for purifying the residual aluminum by chlorinating the residual aluminum to form a purified aluminum.
In one aspect, layered electrolysis is provided by a three-layered electrolysis cell including an end layer of molten aluminum-lithium alloy, a middle layer of molten salt electrolyte, and an opposite end layer of molten lithium.

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