Beneficiation research on a low grade linnaeite ore with hema-tite-pyrite type Xinfang Zhang, Qinqin Wang, Chengdong Wang, Lang Zhu, Shujie Shi, Niao Wang, Chunying Li and Guiming Shi E3S Web Conf., 136 (2019) 02008 Published online: 10 December 2019 DOI: 10.1051/e3sconf/201913602008