Canadian Patents Database

Patent Summary

(12) Patent:	(11) CA 2289965
(54) English Title:	METHOD FOR SEPARATION OF METALS FROM ORE
(54) French Title:	METHODE POUR SEPARER DES METAUX DU MINERAI

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English Abstract

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.

French Abstract

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.

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Patent Details

(51) International Patent Classification (IPC):	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)
(72) Inventors (Country):	LAKSHMANAN, VAIKUNTAM IYER (Canada) SRIDHAR, RAMAMRITHAM (Canada)
(73) Owners (Country):	CANADIAN TITANIUM LIMITED (Canada)
(71) Applicants (Country):	PROCESS RESEARCH ORTECH INC. (Canada)
(74) Agent:	SIM & MCBURNEY
(45) Issued:	2010-02-16
(22) Filed Date:	1999-11-17
(41) Open to Public Inspection:	2000-05-17
Examination requested:	2004-11-09
(30) Availability of licence:	N/A
(30) Language of filing:	English

Patent Cooperation Treaty (PCT):	No

(30) Application Priority Data:
Application No. Country Date 2254345 Canada 1998-11-17

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View Patent Image	Download Patent Image in PDF Format	Size of Image (KB)	Number of Pages
Cover Page	Cover Page	32	1
Abstract	Abstract	18	1
Claims	Claims	27	1
Description	Description	166	4
Drawings	Drawings	N/A	N/A
Representative Drawing	Representative Drawing	N/A	N/A