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small scale copper mineral processing methods

The four major steps in the production of marketablecopperare mining, concentrating, smelting, and refining. In a few instances, however, leaching takes the place of concentrating, smelting, and refining. At present, although considerable leaching and direct-smelting ores are produced, the bulk of thecopperore mined is concentrated. The milling ofcopperores as practiced in the larger ...

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