A process for the extraction of a metal from an ore or concentrate comprises subjecting the ore or concentrate to pressure oxidation in the presence of oxygen and an acidic solution containing halogen ions and a source of bisulphate or sulphate ions, such as H.sub.2 SO.sub.4. The metals which can be extracted by the process comprises copper, as well as non-cuprous metals, such as zinc, and precious metals, such as gold and silver.

Процесс для извлечения металла от штуфа или шлиха состоит из подвергать штуф или шлих к оксидации давления in the presence of кислород и кислотное разрешение содержа ионы галоида и источнику ионов бисульфата или сульфата, such as H.sub.2 SO.sub.4. Металлы могут быть извлечены процессом состоят из меди, так же, как нон-medistye металлы, such as цинк, и драгоценныа металлы, such as золото и серебр.

 
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