Optimization of pyroprocessing of zinc sulfide ore to produce ferroalloy and zinc Baktygul Makhanbetova, Viktor Shevko, Dosmurat Aitkulov, Boris Lavrov and Alexandra Badikova E3S Web of Conf., 531 (2024) 01025 Published online: 03 June 2024 DOI: 10.1051/e3sconf/202453101025