Beneficiation Processing of Magnetite ore from Lampung as Dense Media for Dense Medium Separator in Coal Washing PlantIsmi Handayani, Muhammad Abdur Rasyid, Rifdah Fadhilah and Hyang Iman Kinasih GustiE3S Web Conf., 543 (2024) 01006DOI: https://doi.org/10.1051/e3sconf/202454301006