1. Department of Ferrous MetallurgySchool of MetallurgyNortheastern UniversityShenyang 110819P. R. China
2. Department of Chemical and Metallurgical EngineeringSchool of Chemical EngineeringAalto UniversityAalto FI‐00076Finland
3. Thermal and Flow Engineering LaboratoryÅbo Akademi UniversityÅbo FI‐20500Finland