Abstract
A procedure developed by the US Bureau of Mines to recover rhenium in the form of electrolytic flakes by electrowinning the metal from a solvent-extraction strip solution is described. The recovered rhenium contains only about 0.1 % Mo and spectrograph traces of other impurities, such as copper, aluminum, calcium, chromium, iron, platinum, and silicon. The uses and properties of rhenium are discussed, and conventional recovery methods are reviewed.
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