chalcopyrite milling grinding
Chalcopyrite Flotation and Liberation Characteristics . The Copper Concentrator at Mount Isa Mines Limited treats on average 18 000 tonnes day of chalcopyrite ore containing typically three per cent copper The main gangue minerals are iron sulphides per cent and non sulphide gangue per cent In August 1991 the comminution flowsheet was changed from a conventional circuit crusher rod mill two