Abstract

The effect of microwave radiation upon the mineralogy and magnetic processing of a massive Norwegian ilmenite ore is presented. Short exposure to microwave radiation has been demonstrated to cause fractures within the ore matrix. Increased exposure to microwave radiation is shown to cause localised sample melting. The microwave treated samples have subsequently undergone a multi-stage magnetic separation process which produced concentrates of significantly higher grade and also better recovery of valuable mineral, when compared to those that are nontreated. Conclusions are made regarding further development and implementation of this technology.