Process for controlling the permeability of diaphragms in the preparation of polyvalent metals by electrolysis and an electrolysis cell for carrying out the process
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United States of America Patent
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Jul 12, 1983
Grant Date -
N/A
app pub date -
Oct 20, 1981
filing date -
Nov 27, 1980
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The process according to the invention concerns the production of polyvalent metals such as titanium by electrolysis of molten halides. It comprises controlling the permeability of the diaphragm which separates the anolyte from the catholyte, by causing growth or re-dissolution of a deposit of the metal to be produced. The process is applied in particular to the production of titanium by electrolysis from TiCl.sub.4.
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