PRESENTATION - 1 Energy Use in Metal Productionand chemical extraction – directly in the processes and indirectly through the . The chemical transformation stages (leaching, smelting, electrowinning, etc) . annual. CO2. (tonnes). % Global greenhouse gas production*. Copper pyro. 80.copper mining process direct smelt,Smelting and Refining OperationsPrimary smelting and refining produces metals directly from ore concentrates, ... The copper-depleted electrolyte is returned to the solvent extraction process.
copper mining process direct smelt