1 | State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming, 650093, Yunnan, PR China |
2 | Faculty of Land Resources Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan, PR China |
3 | Faculty of Information Engineering and Automation, Kunming University of Science and Technology, Kunming, 650093, Yunnan, PR China |