Key Laboratory of Ministry of Education of Efficient Mining and Safety of Metal Mines of Science and Technology Beijing 100083;
School of Earth Sciences China University of Technology 330013;
School of Civil and Resource Engineering of Science and Technology Beijing 100083;
National Key Laboratory of Nickel and Cobalt Resources Comprehensive Utilization Jinchuan Group Co.. 737100;
Jinchuan Nickel Cobalt Research and Design Institute Co.. 737100;
