C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
C22B 58/00 (2006.01) C22B 3/00 (2006.01) C22B 3/26 (2006.01) C22B 34/24 (2006.01) C22B 19/04 (2006.01)
Patent
CA 2289965
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.
Méthode pour séparer une valeur métallique, autre que le titane, d'une solution aqueuse, La méthode consiste à extraire des valeurs métalliques de la solution aqueuse au moyen d'une phase organique et d'assujettir la phase organique ainsi obtenue à la chaleur pour distiller la phase organique et la valeur métallique l'une de l'autre. L'écart des points d'ébullition entre la valeur métallique et la phase organique est suffisant pour permettre une distillation fractionnelle d'au moins 50 degrés celcius. Le trichlorure de gallium, le pentafluoride de tantale et le pentafluoride de niobium sont des exemples de valeurs métalliques . Les éthers couronnes, les oxydes phosphiniques et les sels d'ammonium tertiaires et quaternaires sont des exemples de solvant organique.
Lakshmanan Vaikuntam Iyer
Sridhar Ramamritham
Canadian Titanium Limited
Process Research Ortech Inc.
Sim & Mcburney
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