Warner
Warner : A novel process for extracting zinc from sulfide ores. Two linked furnaces are used. In the first, the ore is reacted with metallic copper: ZnS + 2Cu + Zn + Cu2S. The resulting zinc vapor is condensed to liquid and run off. The copper sulfide is oxidized to copper metal in the second furnace: CuS + O2 + Cu + SO2. The molten copper is circulated back to the first furnace. The sulfur dioxide is converted to sulfuric acid for sale. Overall, the process uses much less energy than other processes. (Check source for accuracy of chemical formula)
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