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Small Scale Gold Mining In Zimbabwe Crusher Mill China General Mills 2008

Small Scale Gold Mining In Zimbabwe Crusher Mill China General Mills 2008

A method of grinding a mineralcontaining ore which includes grinding the mineralcontaining ore in a primary milling process and thereafter fine grinding the mineralcontaining ore in a secondary ballmill A composite grinding medium comprising a mixture of steel balls and pebbles is used in the secondary ballmill The pebbles have an average size which is relatively smaller than the

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