B - Operations – Transporting – 22 – F
Patent
B - Operations, Transporting
22
F
B22F 9/24 (2006.01) C22B 3/42 (2006.01) C22B 3/44 (2006.01) C22B 5/00 (2006.01) C22B 23/00 (2006.01)
Patent
CA 2390356
The invention relates to a method for the precipitation of nickel from an aqueous solution containing its sulphate as a metallic powder suitable as an alloying element for refined steel. In this method, nickel reduction takes place continuously in one or several autoclaves at a temperature of 80 - 180 °C and hydrogen pressure of 1 - 20 bar, whereby the production capacity can be raised significantly, compared to batch processes made in correspondingly dimensioned devices or equipment.
L'invention concerne un procédé relatif à la précipitation du nickel à partir d'une solution aqueuse dans laquelle son sulfate est une poudre métallique appropriée comme élément d'alliage pour l'acier raffiné. La réduction s'effectue en continu dans un ou plusieurs autoclaves à une température comprise entre 80 DEG C et 180 DEG C et sous une pression d'hydrogène comprise entre 1 et 20 bar, moyennant quoi il est possible d'augmenter de façon significative la capacité de production, par rapport aux procédés discontinus reposant sur l'utilisation de dispositifs ou équipements dimensionnés en conséquence.
Fugleberg Sigmund
Hamalainen Matti
Knuutila Kari
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
Outokumpu Oyj
Outotec Oyj
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