2019 Spring International Conference on Mineral Processing and Metallurgical Engineering (MPME-S), to be held, in Xiamen, China, April 22-24, 2019, is one of the special tracks within the 2019 Spring World Congress on Engineering and Technology (SCET 2019). The purpose of the MPME-S 2019 is to bring together researchers, engineers and practitioners interested in the advances and applications of Mineral Processing and Metallurgical Engineering.