Refining of Antimony

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Antimony removal of coarse impurities, output of pure antimony metallurgical process, as an important part of antimony smelting process.Different antimony smelting method of coarse impurity content difference is bigger, such As antimony sulfide precipitation output of crude antimony smelting iron ore concentrate is high, its content (the mass fraction (omega / %) As follows: Sb 80 ~ 95, the As 0.2 ~ 3, Fe 3 ~ 15, 0.1 ~ 5 Pb, Cu 0.02 ~ 0.2, and 0.02 ~ 0.1 Na, S 0.2 ~ 3; antimony oxide reduction smelting production of crude antimony compounds (mass fraction omega / %) As follows: Sb 90 ~ 98, the As 0.2 ~ 5, 1 ~ 7 Fe, Cu 0.01 ~ 0.1, and 0.02 ~ 0.1 Na, S 0.1 ~ 1; electrolytic deposition (see alkaline wet smelting antimony) output cathode antimony sodium is higher, but the other impurity content is low, its content (the mass fraction omega / %) As follows: Sb 96 ~ 99, As0.01 ~ 0.15, Fe 0.03 ~ 0.5, Cu 0.0002 ~ 0.005, and 0.1 ~ 1 Na, S 0.01 ~ 1. Antimony main producing countries of China, the United States, Japan, Yugoslavia antimony product standards listed in the table.
Crude antimony with fire and electrolytic refining method.Antimony fire refining is widely used in industry refining method, mainly conducted in reverberatory furnace and short drum rotary kiln.Antimony electrorefining aqueous electrolysis refining and molten salt electrolysis refining two methods, aqueous electrolysis refining is often used in refining crude antimony containing precious metals, to recover gold and silver.Molten salt electrolysis refining since the 1970 s, has been at the industry and industrial test stage, is a kind of new method is very promising.

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Refining of Antimony

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