of;
Electronic;
Information;
and;
Electrical;
Engineering,;
Shangluo;
University,;
Shangluo;
726000,;
China;
Shaanxi;
Key;
Laboratory;
of;
Comprehensive;
Utilization;
of;
Tailing;
Resources;
(Shangluo;
University),;
Shangluo;
726000,;
China;
Key;
Laboratory;
of;
Gansu;
Advanced;
Non-Ferrous;
Metal;
Materials;
(Lanzhou;
University;
of;
Technology),;
Lanzhou;
730050,;
China;