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Outotec offers new partial roasting process to purify contaminated copper and gold concentrates

International Mining | December 30, 2011 | 12:13 am Base Metals Precious Metals Europe Copper Gold 

Outotec has developed a two-stage partial roasting process to remove impurities - such as arsenic, antimony and carbon - from copper and gold concentrates as a pre-treatment to actual extraction processes. It has also established a new continuous pilot plant at...

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