PROCESSING METHOD OF ZINC-IRON-CONTAINING DUSTS OR SLURRIES OF METALLURGICAL PRODUCTION Russian patent published in 2012 - IPC C22B7/00 C22B19/30 

FIELD: metallurgy.

SUBSTANCE: zinc-iron-containing dusts or slurries are mixed with carbon-bearing reducing agent in order to obtain the charge; formation and drying of charge forms is performed. High-temperature processing of charge forms is performed in calcinator by supplying the heat carrier with liberation and collection of zinc oxide. Charge forms are pressed with thickness of 4-10 mm with corrugated surface, and high-temperature processing of pressed charge forms in the furnace is performed at 900-1100°C on gas-permeable conveyor belt. At that, charge forms are laid mainly in one layer, and supply of heat carrier to calcinator is performed through gas-permeable conveyor belt.

EFFECT: higher efficiency and processing of zinc-containing dusts and slurries owing to reducing power consumption and increasing the zinc removal degree.

2 cl, 9 ex