Process for isolating tantalum and niobium

Details Process for isolating tantalum and niobium Process for isolating tantalum and niobium

C - Chemistry, Metallurgy

22

B

C22B 34/24 (2006.01)

Patent

CA 2090919

The present invention relates to a hydrometallurgical process for isolating tantalum and niobium from raw materials containing tantalum and niobium by treatment with pure hydrofluoric acid or a mixture of hydrofluoric acid and sulphuric acid, followed by solvent extraction of the tantalum and niobium fluoro-complexes from the treatment solution using methylisobutyl ketone (MIBK) and steam distillation of the organic ketone phase containing tantalum and niobium, to produce a new aqueous which is contactable by fresh MIBK to selectively extract tantalum.

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