Process for selective liquid-liquid extraction of germanium
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United States of America Patent
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Feb 4, 1986
Issued Date -
N/A
app pub date -
Jan 4, 1982
filing date -
Aug 15, 1980
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A process for selective liquid-liquid extraction of germanium from an aqueous acidic liquor containing, besides germanium, at least one other metal selected from the group which comprises cadmium, zinc, cobalt, iron, arsenic and nickel. This process includes extracting germanium from said aqueous liquor by contacting said liquor with an organic medium containing a diluent and an extractant, said diluent being immiscible with said aqueous liquor. The major part of germanium passes from said aqueous liquor to an organic phase which is subsequently submitted to a stripping step by contacting with an alkaline medium, with formation of an aqueous phase containing the major part of germanium from said aqueous liquor.
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