Extraction and separation of manganese and iron from ...
Jan 15, 2019· According to the Chinese industrial classifications of manganese oxide ores and carbonate ores by Mn/Fe mass ratio (Yao, 1996, Fan and Yang, 1999, Tan et al., 2004), manganese ores are divided into three types, namely rich Mn ores (higher Mn grade), FeMn ores and poor Mn ores (lower Mn grade) (as listed in Table 1).