1. Institute of Engineering Technology; University of Science and Technology Beijing; Beijing 100083 China
2. Chair of Ferrous Metallurgy; Montanuniversitaet Leoben; Franz-Josef-Straße 18 8700 Leoben Austria
3. School of Metallurgical and Ecological Engineering; University of Science and Technology Beijing; Beijing 100083 China
4. Technical Center; Hebei Xinji Aosen Steel Co. Ltd.; Hebei 052360 China