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Cost Of Milling Copper Ore

mount isa copper mine, queensland, australia,ore processing. the copper concentrator was rebuilt in 1973, with rod and ball milling and three-stage flotation, to supply the roaster and conventional blister copper smelter on site. in 1981, mount isa commenced anode casting as well. in 1988-1989, two 6.4mw ag/sag grinding mills replaced the rod and ball mills at a cost of a$35m..mine provides mining, gold, copper, coal,copper ore being loaded into a 300 ton truck for transport to the crusher. the primary crusher at a copper mine. the truck dumps ore into the crusher which crushes the ore. screens size and distribute the classified ore to a series of conveyors, like those above, for transportation to the mill.chapter 6 copper production technology,grade ores and continually reduce the costs of production. economies of scale have been real-ized in all phases of copper production. both ma-chine and human productivity have increased dramatically. this chapter briefly describes the technology for producing copper, from exploration, through mining and milling, to smelting and refining and cost comparisons of hpgr-based circuits | e & mj,at a grind of 80% passing 160 μm, the hpgr-ball mill circuit shows significant cost advantage over the sabc circuit with a npv of $33 million and an irr of 22% (see table 4). at a product size of 80% passing 75 μm, both options have costs advantages over the sabc option, although the hpgr-ball mill circuit had lower overall costs than the two-stage hpgr-stirred mill circuit..

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