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1. (WO1989000613) MAGNESIUM PRODUCTION
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1989/000613 International Application No.: PCT/GB1988/000560
Publication Date: 26.01.1989 International Filing Date: 11.07.1988
Chapter 2 Demand Filed: 27.02.1989
IPC:
C22B 26/22 (2006.01) ,C22B 4/00 (2006.01) ,C22B 5/04 (2006.01) ,C22B 9/22 (2006.01)
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
26
Obtaining alkali, alkaline earth metals or magnesium
20
Obtaining alkaline earth metals or magnesium
22
Obtaining magnesium
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
4
Electrothermal treatment of ores or metallurgical products for obtaining metals or alloys
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
5
General processes of reducing to metals
02
Dry processes
04
by aluminium, other metals, or silicon
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
9
General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
16
Remelting metals
22
with heating by wave energy or particle radiation
Applicants:
THE UNIVERSITY OF MANCHESTER INSTITUTE OF SCIENCE [GB/GB]; AND TECHNOLOGY; P.O. Box 88; Manchester M60 1QD, GB (AllExceptUS)
CAMERON, Andrew, Miller [GB/GB]; GB (UsOnly)
Inventors:
CAMERON, Andrew, Miller; GB
Agent:
ATKINSON, Peter, Birch; Marks & Clerk Suite 301 Sunlight House Quay Street Manchester M3 3JY, GB
Priority Data:
871631910.07.1987GB
Title (EN) MAGNESIUM PRODUCTION
(FR) PRODUCTION DE MAGNESIUM
Abstract:
(EN) Magnesium is produced by the metallothermic reduction of MgO in a molten slag bath comprised of MgO, Al2O3 and CaO together with oxide formed from the reducing metal. The composition of the slag is controlled during at least a first stage of the reduction so that it is wholly within the periclased region of its phase diagram and, at least in the surface region, has a substantially constant liquidus temperature. The surface region of the slag is maintained by direct heating (e.g. by a plasma) at or close to the liquidus temperature.
(FR) On produit du magnésium par la réduction métallothermique de MgO dans un bain de scories en fusion se composant de MgO, Al2O3 et CaO ensemble avec de l'oxyde formé à partir du métal de réduction. On contrôle la composition de la scorie pendant au moins une première étape de la réduction de manière à ce qu'elle se trouve intégralement à l'intérieur de la région périclasée de son diagramme d'équilibre et, au moins dans la région de surface, à une température de liquidus sensiblement constante. La région de surface de la scorie est maintenue à une température égale ou proche de la température de liquidus par chauffage direct (par exemple au moyen d'un plasma).
Designated States: AU, BR, JP, NO, US
European Patent Office (AT, BE, CH, DE, FR, GB, IT, LU, NL, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
NO19900100EP0366701US5090996AU1988019933