Preconcentration strategies in the processing of nickel laterite .
WEBAug 15, 2017 · The total quantity of Ni ore reserves comprising both lateritic and chromite overburden has been estimated at around 230 million tonnes containing –% Ni (Bhoi et al., 2011). While mining 1 tonne of chromite ore, around 6–7 tonnes of chromite overburden must be removed. A number of attempts have been documented to recover .