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A silver/lead/zinc mine in Queensland, Australia was originally designed to treat 1.5 million wet metric tonnes per annum. The original grinding circuit consisted only of primary autogenous milling.

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May 26, 2018· Ball mill. A ball mill is a type of grinder used to grind and blend materials for use in mineral dressing The ball mill can grind various ores and other materials either wet or dry. batch and continuous operation, similarly it is suitable for open as well as closed circuit grinding and is applicable for materials of all degrees of hardness.

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