1. Department of Civil, Environmental and Natural Resource Engineering, Process Metallurgy, Minerals and Metallurgical Engineering, Luleå University of Technology, 97187 Luleå, Sweden
2. Central Metallurgical Research and Development Institute, P.O. Box 87, Helwan 11421, Egypt
3. SWERIM AB, Aronstorpsvägen 1, 97437, Luleå, Sweden