Shown below is a flowsheet of a concentrator processing ore to produce a copper concentrate. Identify the unit operations which best fit into the flowsheet at the appropriate locations from A to P. Select the unit operations from the following; thickener, secondary screen, scavenger flotation cells, tertiary crusher, hydrocyclones, regrind ball mill, dryer, rougher flotation cells, 2nd stage cleaner flotation cells, filter secondary crusher and rod mill. [8]
