nbsp 0183 32 Milling to a P80 of 150 181 m in a ball mill Sulphide flotation with regrinding of the bulk rougher concentrate to provide a cleaner flotation feed with a P80 of 38 181 m Dewatering of the sulphide flotation concentrate using a thickener followed by pressure filtration of the thickened concentrate to produce a concentrate moisture level suitable for shipment …