7TH EUROPEAN COKE AND IRONMAKING CONGRESS - ECIC 2016

Primetals successfully established the Hybrid Flotation Technology, which differs from the standard pneumatic flotation cells, on the non-ferrous mining market. The growing demands for high grade pellet feed with low content of silica and sulfur also makes that technology very interesting for the use in iron ore beneficiation. Primetals conducted a laboratory campaign with the in-house laboratory Hybrid Flotation Cell. The cell was used for a test campaign to remove sulfur from an iron concentrate containing 67% Fe and 1.3% S. 80% of the mass was smaller than 97μm while 30% of the mass was smaller than 20μm. The target was to reduce the sulfur content in the final iron concentrate to less than 0.4% by meeting a Fe-recovery of at least 95%. The test results show an overachievement of the target and the potential of the Hybrid Flotation applied as rougher-cleaner combination to produce an iron concentrate with significantly reduced sulfur content.