Fully automatic current control for metal depletion cells
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United States of America Patent
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Nov 8, 1994
Grant Date -
N/A
app pub date -
Sep 3, 1992
filing date -
Mar 3, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An electrolytic cell, for demetallization of a solution containing metal ions, has a hydrogen sensor connected to a control and monitoring unit which controls the intensity of current applied across the cell's electrodes. Whenever the hydrogen concentration above the solution surface in the cell reaches a predetermined undesirably high level, the control unit makes a stepwise reduction in the applied current. This stepwise reduction continues until the ions in the solution are depleted to a predetermined level, at which point the solution is replaced.
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