Influence of alkaline additives on main minerals in Baotou rare earth tailings in the process of coal-based magnetizing roastingBo Zhang, Xiangxin Xue, He Yang, Xiaowei Huang and Gongjin ChengMetall. Res. Technol., 116 3 (2019) 308DOI: https://doi.org/10.1051/metal/2018078