FIELD: chemistry.
SUBSTANCE: method involves acid leaching under the effect of alternating current to obtain a precipitate and a solution containing perrhenic acid and nitrates of non-ferrous metals, followed by precipitation of the obtained solution with sodium or ammonium sulphide in the presence of a reducing agent - hydroxylamine sulphate and washing with water and treating the sulphide precipitate with aqueous hydrochloric acid solution. The insoluble rhenium sulphide remaining after treatment with hydrochloric acid is filtered and dissolved in ammonia solution of hydrogen peroxide. The obtained solution is taken for extraction of the desired product.
EFFECT: extraction of rhenium with high output and degree of purity using a technologically simple and cheap method.
4 cl, 1 dwg, 2 ex
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