Method for producing easily volatile metals, such as zinc, lead, mercury and cadmium, of sulfidic raw materials
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United States of America Patent
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Apr 4, 1995
Grant Date -
N/A
app pub date -
May 13, 1993
filing date -
May 20, 1992
priority date (Note) -
Expired
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Abstract
The invention relates to a method for producing zinc, cadmium, lead and other easily volatile metals from sulfidic raw materials in a pyrometallurgical process. In the method, zinc sulfide concentrate is fed into molten copper in atmospheric conditions, at a temperature of 1,450.degree.-1,800.degree. C., so that the zinc, lead and cadmium are volatilized, and the iron and copper remain in the molten metal or in the metal sulfide matte created in the furnace.
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