METHOD OF PYROMETALLURGICAL PROCESSING OF ZINC-CONTAINING MATERIALS Russian patent published in 2005 - IPC

FIELD: nonferrous metallurgy; pyrometallurgy.

SUBSTANCE: the invention presents a method of pyrometallurgical processing of zinc-containing materials and is dealt with nonferrous metallurgy, in particular, with processing of zinc cakes by a rotary-kiln processing. The method of pyrometallurgical processing of zinc-containing materials provides for production of a mixture from zinc-containing material and a solid carbonaceous reducing agent, the mixture agglomeration and a consequent rotary-kiln processing of the agglomerated mixture together with the solid carbonaceous reducing agent. The indicated mixture also contains fractions of crushed fossil rock in an amount of 2-10 % from the weight of a zinc-containing material. Agglomeration of the mixture is realized by its pressing, at that before the operation of mixing or simultaneously with it crushing of the zinc-containing material is realized providing an increase of the contents of zinc in the rotary-kiln oxidation, decrease of the carbonaceous reducing agent consumption and simplification of technology of the zinc-containing materials processing.

EFFECT: the invention ensures increased production of zinc in the rotary-kiln oxidation process, decreased consumption of the carbonaceous reducing agent, simplification of technology of the zinc-containing materials processing.

5 cl, 4 tbl, 4 ex