Some Processing Techniques for Rhenium Isolation and Purification from Refractory Alloys
V. A. SHIPACHEV
Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences, Pr. Akademika Lavrentyeva 3, Novosibirsk 630090 (Russia)
E-mail: schipvl@niic.nsc.ru
Keywords: refractory alloy, hydrometallurgy, nonferrous metals, rhenium, segregation, separation, purification
Pages: 323–326
Abstract
Two variants are presented for the hydrometallurgical extraction of rhenium from the solutions of complicated composition, obtained via recycling the wastes of multicomponent refractory alloy ZhS-32. The applying of both schemes results in the formation of AR-0 grade NH4ReO4. The yield of the metal amounts to 99.2 % from the initial metal content in the alloy. The techniques used allow performing a single stage separation of the rhenium from impurity metals with eliminating the channels of the irretrievable loss thereof.
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