FIELD: hydrometallurgy. SUBSTANCE: concentrate decomposition is carried out in autoclave in the presence of nitric acid and oxygen following by denitration of molybdenum-rhenium-containing solution in autoclave due to reductant properties of the parent concentrate. Nitrogen oxides evolving at denitration were fed into autoclave for decomposition by gravity owing to excessive pressure. Method is used in processing of different molybdenum-containing raw. EFFECT: improved method of extraction. 1 dwg
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