Abstract:
With the rapid socio-economic development of the world, the demand for nickel has continuously registered an upward trend. As primary nickel deposits are characterized by high ore-grade with less gangue, coupled with easy mineability, beneficiation and smelting, nickel extraction from primary nickel deposits has formed approximately 60% of the world’s total nickel production. However, due to the upsurge in nickel production over the years and the threatening depletion of primary nickel resources/reserves, the focus of stakeholders the world-over has been shifted to exploration and mining of laterite nickel deposits. Unfortunately, problems associated with exploitation of this type of deposit have not been accorded enough attention. This paper through the discussion of genesis and morphology of humidified laterite nickel deposits, applicable mining techniques, processing and smelting requirements of the run-off-mine ore; elaborates selective mining for laterite nickel and ore blending. Dust suppression, dewatering of mining areas and rehabilitation of mined-out areas are also introduced.