Effect of pretreatment on the extraction of valuable metal from vanadium-bearing titanomagnetite by ammonium sulfate roastingZhenzhong Bian, Yali Feng, Haoran Li, Qian Zhang, Chenglong Xu, Haosheng Li and Zhengyao LiMetall. Res. Technol., 118 6 (2021) 607DOI: https://doi.org/10.1051/metal/2021054
