METHOD OF REPROCESSING OF THE MATERIALS CONTAINING MINERALS, IN WHICH NICKEL IS PRESENT IN PROTOXIDE FORM Russian patent published in 2008 - IPC C22B23/00 C22B3/06 

FIELD: nonferrous hydrometallurgy; other industries; methods of reprocessing of materials containing nickel in its protoxide form.

SUBSTANCE: invention is pertaining to the hydrometallurgy of non-ferrous metals and may be used at development of the production processes of refining of the converter mattes and reprocessing of other material containing nickel in its protoxide form. The method includes dissolution of these products in solutions of inorganic acids at potential of no less than 1.2 V of the hydrogen electrode, for what they introduce into the initial mash the oxidant, which if necessary is used in the course of production process for maintaining of the necessary value of the redox potential. The method allows to leach the persistent mineral forms containing nickel protoxide in the atmospheric conditions with production of solutions, containing less than 10 g/dm³ of the free acid at the variable concentration of nickel. The technical result of the invention is the increased extraction of the nickel into the solution at simplification of the production method.

EFFECT: invention ensures the increased extraction of the nickel into the solution at simplification of the production method.

2 cl, 3 tbl, 4 ex