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- W2292005311 abstract "The different treatment steps comprising alkaline dissolution are examined, putting tantalum, niobium, and a group of impurities in solution, and successively extracting tantalum and niobium by hexone. The degree of purity and the yields obtained for tantalum and niobium are given, as well as the yields from the treatment of the depleted effluent for tungsten recovery. The production of pure salts and oxides starting with pure solutions of tantalum and niobium in hexone is described, with reagent consumptions being given. The preparation of tantalum and niobium in metallic powder form is briefly examined with some examples of igneous electrolysis and sodium burning. (tr-auth)" @default.
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- W2292005311 date "1960-10-31" @default.
- W2292005311 modified "2023-09-26" @default.
- W2292005311 title "TREATMENT OF COMPLEX Ta-Nb-Fe MATERIALS FOR VERY-PURE SALTS, OXIDES, AND METALS OF Ta AND Nb: RESULTS AT THE HOBOKEN PILOT PLANT" @default.
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