OXIDIZED ZINC ORE REPROCESSING METHOD Russian patent published in 2003 - IPC

Abstract RU 2208059 C1

FIELD: zinc pyrometallurgy. SUBSTANCE: method involves providing sulfiding roasting of oxidized zinc ore by sulfidizer in water steam atmosphere at furnace temperature of 923-973 K. Sulfidizer used is substandard pyrite concentrate with sulfur content of at least 40%. Method may be employed in preparing difficult-to-concentrate oxidized and mixed zinc ores for flotation process. EFFECT: increased extent of sulfiding oxidized zinc minerals in ore, utilization of low-cost sulfidizer and involvement of difficult-to-concentrate zinc ores into process. 2 cl, 3 ex

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RU 2 208 059 C1

Authors

Guljashinov A.N.

Antropova I.G.

Kalinin Ju.O.

Khanturgaeva G.I.

Dates

2003-07-10—Published

2001-11-20—Filed