B - Operations – Transporting – 22 – F
Patent
B - Operations, Transporting
22
F
B22F 9/22 (2006.01) B22F 1/00 (2006.01) C22C 19/07 (2006.01)
Patent
CA 2238281
The invention concerns metal powder granulates comprising one or a plurality of the metals Co, Cu, Ni, W and Mo. The invention further concerns a method for the production of these granulates and the use thereof. The production method is characterized in that a metal compound comprising one or a plurality of the groups comprising oxides, hydroxides, carbonates, hydrogenocarbonates, oxalates, acetates, formiates with binder and optionally in addition between 40 and 80 % solvent, relative to the solids content, is granulated as the starting component, and the granulates are thermally reduced in a hydrogen-containing gaseous atmosphere to form the metal powder granulates, the binder and the solvent, if used, being removed completely.
L'invention concerne des granulés de poudre métallique renfermant un ou plusieurs des métaux ci-après: Co, Cu, Ni, W et Mo, leur procédé de préparation, ainsi que leur utilisation. Le procédé de préparation est caractérisé en ce qu'on effectue la granulation d'un composé métallique, utilisé comme composant de départ, comprenant un ou plusieurs des groupes ci-après: oxydes, hydroxydes, carbonates, hydrogénocarbonates, oxalates, acétates, formiates, avec un liant et, éventuellement avec, en plus, 40 à 80 % d'un solvant, par rapport à la teneur en matières solides, en ce qu'on réduit thermiquement les granulés en atmosphère gazeuse renfermant de l'hydrogène, de manière à former des granulés de poudre métallique, le liant et le solvant étant ensuite éliminés complètement.
Gries Benno
Hohne Matthias
Fetherstonhaugh & Co.
H.c. Starck Gmbh & Co. Kg
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