Abstract
Diagrams of accumulativemagnetic susceptibility distribution are used to evaluate the suitability of four sulphide ores for magnetic methods of beneficiation. The investigated materials are Garpenberg, Aitik and Kedtrask. The samples were divided into susceptibility classes each of which was characterized by its mineral content. The results are presented as diagrams showing mineral appearance in the whole susceptibility range of the ore. The obtained accumulative susceptibility diagrams can be used to predict the outcome of magnetic separation.The accumulative susceptibility diagrams indicate that the Garpenberg and possibly the Kedtrask materials are suited for magnetic separation, possibly as the primary concentration method. The other investigated materials contain iron-bearing silicates magnetic susceptibility of which is higher than that of valuable mineral and will thus report into the magnetic product making further separation necessary.