Development and practice of the Falconbridge chlorine leach process

CIM Bulletin, Vol. 94, No. 1051, 2001

E.O. Stensholt, O.M. Dotterud, E.E. Henriksen, P.O. Ramsdal, F. StŒlesen and E. Thune, Falconbridge Nikkelverk AS, Kristiansand, Norway

The development and commercial operation of the Falconbridge chlorine leach process have been described in papers in 1985 and 1987. Since this time, various process improvements have been implemented and the capacity of the Kristiansand refinery has been increased to 85 000 t/y Ni, 40 0000 t/y Cu and 4500 t/y Co. The focus has been on continuous improvements in productivity, the use of energy and other costs. Several environmental issues have also been eliminated or reduced since 1987.
Keywords: Falconbridge, Kristiansand refinery, Chlorine leach process, Capacity increases, Operating improvements, Environmental improvements.