Method of solvent extraction and apparatus therefor
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United States of America Patent
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Jul 27, 1999
Issued Date -
N/A
app pub date -
May 22, 1995
filing date -
May 18, 1988
priority date (Note) -
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Abstract
In a solvent extraction method a contactor comprises a forward extraction section comprising sub-sections thereof and a back extraction section comprising sub-sections thereof. To enable higher concentrations of solute to be obtained in the backwash liquor, the contactor is operated with recycle of partially-loaded solvent, via a line from a back extraction sub-section to a forward extraction sub-section.
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