1973•OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information)Requires access
Separation of zirconium and hafnium thiocyanate complexes by extraction into neutral organophosphorus compounds (NOPC)
E.A. Pepelyaeva, O.A. Sinegribova, N.A. Shostenko, G.A. Yagodin
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Abstract
S>Translated from Zh. Prikl, Khim.; 46: No. 6, 1301-1305(Jun Extractive separation of Zr and Hf thiocyanates is generally effected from hydrochloric or sulfuric acid solutions. The distribution and separation coefficients depend to a considerable extent on the composition of the aqueous phase. In extraction from hydrochloric acid solutions into NOPC, metal extraction is considerable but the separation coefficient is very low; and use of sulfuric acid solutions leads to a sharp decrease of extractability, but with more effective separation. The causes of the influence of various factors on separation of Zr and Hf complexes are discussed. (auth)