METHOD FOR SEPARATION OF METALS FROM ORE

摘要

A method for the separation of a metal value, other than titanium, from aqueous solution. The method comprises extracting the metal values from the aqueous solution with an organic phase and subjecting the organic phase thus obtained to heat to distill one of the organic phase and the metal value from the other thereof. The difference in boiling points between the metal value and the organic phase is sufficient to permit fractional distillation at least 50°C. Examples of metal values are gallium trichloride, tantallum pentafluoride and niobium pentafluoride. Examples of the organic solvent are crown ethers, phosphine oxides, tertiary and quaternary ammonium salts.