Metadata
Author: patents-wipo
Data
English[en]
It concerns a comprehensive recovery and utilization of laterite-nickel ore, comprising the following steps: A) subjecting the laterite-nickel ore to a smelting process of sulfuration to produce low grade nickel matte; B) subjecting the molten slag coming directly from the sulfuration process to a smelting process of reduction in an submerged arc furnace to produce a semi-finished steel with Fe content higher than 80%, which is then refined into qualified steel in a converter; or, putting the molten slag into an arc furnace to produce qualified steel straight away; C) subjecting the low grade nickel matte to a sulfating roasting-acid solution leaching process to produce sulfuric acid and Fe concentrate with a grade higher than 60%; D) treating the Ni/Co leaching liquor by solvent extraction to produce cobalt containing salt.
French[fr]
On peut aussi mettre la laitier fondu dans un four à arc électrique pour obtenir directement l'acier de qualité normalisée. C) On soumet la matte de nickel à faible teneur à une lixiviation par une solution acide de grillage sulfatant donnant de l'acide sulfurique et un concentré de Fe d'une teneur supérieure à 60%. D) On soumet la liqueur de lixiviation du Ni/Co à extraction par solvant donnant un sel contenant du cobalt.