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In order to refine blister copper it is melted in a furnace and is stirred with green logs of wood. The purpose is
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To reduce the metallic oxide impurities with hydrocarbon gases liberated from the wood.
The blister copper is melted in reverberatory furnace and stirred with poles of green wood. Any oxide of copper formed is reduced to metallic copper by the reducing hydrocarbons of the wood. The process is called fire refining or poling.
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