METHOD OF PROCESSING OF HARD-FLOATABLE NICKEL-PYRRHOTINE MATERIALS BEARING NOBLE METALS Russian patent published in 2005 - IPC

FIELD: methods and the equipment for production of briquettes out of different powder materials.

SUBSTANCE: the invention presents a method, which is dealt with the field of flotation of hard-floatable nickel - pyrrhotine materials bearing noble metals, which may be used for extraction of nickel, copper and noble metals from the storage ores and products of flotation. The technical result consists in an increased level of end-to-end extraction of non-ferrous and noble metals in a shared concentrate due to an increased efficiency of the floatation activity of sulfide minerals in the process of preparation of the hard-floatable nickel - pyrrhotine materials to a flotation. The method provides for a preliminary preparation of the material to a flotation, introduction of a sulfhydryl collector in the pulp and a flotation of sulfides. The preliminary preparation of the material to a flotation is realized in two stages. At that at the first stage the material is exposed to mechanical activation in a shredding apparatus at the presence of an abrasive dispersible material particles of 74-500 microns sizes. At the second stage of the pulp agitation a chemical activation of the ground material in the apparatus is conducted with stirring at the presence of an alkaline reagent up to the value of рН 7.0-10.8 for 3-10 minutes. The flotation of sulfides is conducted at a mass ratio of pyrrhotine and the sulfhydryl collector from 1:0.0004 up to 1:0.0028.

EFFECT: the invention ensures an increased level of end-to-end extraction of non-ferrous and noble metals in a shared concentrate.

2 cl, 22 ex, 1 tbl