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1. (WO1989000444) PROCESS FOR SEPARATING METALLIC IONS FROM AQUEOUS SOLUTIONS
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1989/000444 International Application No.: PCT/EP1988/000637
Publication Date: 26.01.1989 International Filing Date: 13.07.1988
IPC:
B01D 11/04 (2006.01) ,B01D 61/40 (2006.01) ,C22B 3/38 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
11
Solvent extraction
04
of solutions which are liquid
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
61
Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
38
Liquid-membrane separation
40
using emulsion-type membranes
C CHEMISTRY; METALLURGY
22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
B
PRODUCTION OR REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
3
Extraction of metal compounds from ores or concentrates by wet processes
20
Treatment or purification of solutions, e.g. obtained by leaching
26
by liquid-liquid extraction using organic compounds
38
containing phosphorus
Applicants:
M&T CHEMICALS INC. [US/US]; One Woodbridge Center Woodbridge, NJ 07095, US (AllExceptUS)
MARR, Rolf [AT/AT]; AT (UsOnly)
LACKNER, Heinz [AT/AT]; AT (UsOnly)
BART, Hans-Jörg [AT/AT]; AT (UsOnly)
NICKL, August [AT/AT]; AT (UsOnly)
Inventors:
MARR, Rolf; AT
LACKNER, Heinz; AT
BART, Hans-Jörg; AT
NICKL, August; AT
Agent:
ANDRAE, Steffen; Andrae, Flach, Haug, Kneissl Steinstraße 44 D-8000 München 80 @, DE
Priority Data:
A 1763/8713.07.1987AT
Title (EN) PROCESS FOR SEPARATING METALLIC IONS FROM AQUEOUS SOLUTIONS
(FR) PROCEDE D'EXTRACTION D'IONS METALLIQUES CONTENUS DANS DES SOLUTIONS AQUEUSES
Abstract:
(EN) A process for separating metallic ions, in particular nickel ions, from aqueous solutions comprises a first stage in which the solutions undergo liquid membrane permeation and a second stage in which the enriched solutions undergo ordinary solvent extraction. The membrane phase from the first stage is used as the solvent phase during the second stage. The membrane phase contains a sulphur-containing organic phosphate compounds, the aqueous stripping phase has a mineral acid content between 1 and 5 mol/l, the ratio of the aqueous solution phase used to the solvent phase and the membrane phase is always greater than 1, and the liquid membrane permeation and the solvent extraction are carried out in a mixer-separator type of apparatus in which the separators are vertical and the static differential height between the mixer and separator can be chosen at will.
(FR) Selon un procédé d'extraction d'ions métalliques, notamment d'ions de nickel, contenus dans des solutions aqueuses, on soumet les solutions pendant une première étape à une perméation fluide à travers une membrane, puis on soumet les solutions ainsi enrichies pendant une deuxième étape à une extraction usuelle à l'aide d'un solvant. La phase de la membrane utilisée pendant la première étape est utilisée comme phase solvante pendant la deuxième étape. La phase de la membrane contient un composé organophosphorique sulfureux, la phase aqueuse d'extraction a une teneur en acide minéral comprise entre 1 et 5 mol/l, le rapport entre la phase aqueuse de solution utilisée d'une part et la phase de solvant et de membrane d'autre part est toujours supérieur à 1. La perméation fluide et l'extraction par solvant se font dans un appareil du type mélangeur-séparateur, avec des séparateurs verticaux, la hauteur différentielle statique entre le mélangeur et le séparateur étant librement sélectionnable.
Designated States: AU, JP, US
European Patent Office (AT, BE, CH, DE, FR, GB, IT, LU, NL, SE)
Publication Language: German (DE)
Filing Language: German (DE)
Also published as:
EP0324843AU1988021209