Cu Process Plant - Lumwana - Zambian Copperbelt (sitios de interés)
Descripción del sitio
Flow sheet:
Trucks from the mine will tip directly into a 400 t capacity ROM dump hopper. The ROM pad will accept ore that cannot be directly dumped into the crusher feed hopper. The primary gyratory crusher will be used to crush the ROM ore from a nominal top size of 1 500 mm to less than 200 mm. Oversize material will be deposited on the ROM pad to be further broken by a mobile rock breaker. Crusher product is then conveyed via a 4.5 km overland conveyor to a conical crushed ore stockpile with 16 hours live capacity.
Ore is to be reclaimed via apron feeders onto a conveyor belt providing direct feed, at a rate of approximately 2 500 t/h, into the 38 ft x 18 ft SAG mill. The SAG mill trommel undersize discharges into a hopper and is pumped to conventional hydrocyclones,
operating in closed circuit with a 26 ft x 40 ft ball mill. The hydrocyclone overflow (P80 of 280 ?m) reports to flotation, whilst the underflow returns to the ball mill.
operating in closed circuit with a 26 ft x 40 ft ball mill. The hydrocyclone overflow (P80 of 280 ?m) reports to flotation, whilst the underflow returns to the ball mill.
The flotation plant consists of two parallel trains of rougher/scavenger cells. The rougher/scavenger concentrate reports to the regrind circuit to further liberate the copper minerals. Following regrinding, the concentrate is cleaned in a conventional cleaner/recleaner circuit to reach final concentrate grade. Final concentrate grades of approximately 44% and 29% copper are expected from Malundwe and Chimiwungo respectively.
The concentrate will be dewatered in a circuit consisting of high-rate thickening followed by pressure filtration to produce a filter cake suitable for transportation. The concentrate will be stored in a 7 day capacity storage shed from which it will be subsequently loaded onto trucks and transported to market for smelting and refining. Flotation tailings will be thickened and pumped to the tailings dam.
The majority of the Copper Plant water will be recovered and recycled from the thickener overflows and tailings dam return water. Fresh make-up water will be supplied from a river water dam as required.
376075mE, 8645900mN
-12° 14' 48.29", +25° 51' 38.25"
Lumwana Project (LML49)
100% Equinox Minerals Ltd (ASX:EQN, TSX:EQN)