Segmented smelting method for high-rich multi-metal material
The invention discloses a segmented smelting method for a high-rich multi-metal material. Putting the low-grade lead ore, the multi-metal lead ore, the coal, the regenerated material, the flux and the soot into a cylinder granulator, adding water, and granulating to obtain a ball material; the pelle...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention discloses a segmented smelting method for a high-rich multi-metal material. Putting the low-grade lead ore, the multi-metal lead ore, the coal, the regenerated material, the flux and the soot into a cylinder granulator, adding water, and granulating to obtain a ball material; the pellets enter an oxidation furnace for oxidation smelting, and high-concentration SO2 flue gas, oxidation furnace soot, liquid-state high-lead slag and first-section deposited lead are produced through an oxidation smelting reaction; and the obtained liquid-state high-lead slag flows into a reduction furnace to be subjected to a reduction smelting reaction, second-stage lead deposition is achieved by controlling the temperature of a molten pool, the slag type and the coal-oxygen ratio, and liquid-state zinc-containing reducing slag and soot are produced. The produced soot is recycled as a raw material, and first-section deposited lead and second-section deposited lead are sent to an electrolysis process for refining and |
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