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METHOD FOR EXTRACTIVE SEPARATION OF TANTALUM AND NIOBIUM FROM HYDROFLUORIDE-SULFATE ACIDIC SOLUTIONS

2025-07-29 17:491580下载
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FIELD : rare and dispersed element metallurgy, in particular extractive separation of tantalum and niobium. SUBSTANCE : claimed method includes extractive separation tantalum from niobium with organic extractant. separation is carried out by using mixture of 70-85 vol % of tributyl phosphate and 30-15 vol % of aliphatic C1-C7-alkohol as organic extractant. Tantalum is transferred into organic phase, and niobium - into aqueous one. Then organic and aqueous is separated. EFFECT : increased tantalum recovery degree and improved tantalum and niobium separation degree. 6 tbl, 6 ex


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