Hydrometallurgical processing of lead materials using fluotitanate
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United States of America Patent
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Jan 22, 2002
Grant Date -
N/A
app pub date -
Mar 10, 2000
filing date -
Apr 12, 1999
priority date (Note) -
Expired
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Abstract
Raw lead to be refined is leached in a leach apparatus with a leach solution containing fluoro compounds. During the leaching step, lead is dissolved, with ferric fluro compounds being reduced to ferrous fluro compounds. The leaching solution resulting from the leaching step is sent to the cathodic compartment of a diaphragm cell in which lead is deposited on a cathode, in compact, highly pure form. The solution that is depleted of lead is sent to the anodic compartment in which a suitable anode oxidizes the ferrous fluro compound to ferric fluro compounds that can be recycled to the leaching step.
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