Method for operating a smelting-roasting furnace for treating leaching residues

Abstract

The application discloses a kind of operation methods of smelting furnace-fuming furnace processing leaching residue cold material, it is related to metallurgical technical field, comprising the following steps: step one, oxygen-enriched pulverized coal side-blown smelting furnace operation content, step two, fuming furnace operation content, the step two includes into slag stage, blowing stage and slagging stage;Through the operation of oxygen-enriched pulverized coal side-blown smelting furnace and fuming furnace mutual matching, oxygen-enriched pulverized coal side-blown smelting furnace and fuming furnace are in series, ladder arrangement, side-blown furnace continuous feeding, intermittent slagging, fuming furnace intermittent feeding, intermittent slagging operation, two furnace combined blowing, Zn recovery rate > 80%, Pb recovery rate is greater than 97%, Ag recovery rate > 92%, fuming water quenching final slag contains Zn < 1.8%, contains Pb < 0.1%, operation method reaches smelting intensity, flue gas volume is less, coal rate is lower Effect, and can be widely applied to the operation of oxygen-enriched pulverized coal side-blown smelting furnace and fuming furnace.