Upgrading of low-grade manganese ore based on reduction roasting and magnetic separation technique

作者：Gao, Lihua; Liu, Zhenggen^*; Chu, Mansheng^*; Wang, Ran; Wang, Zhihao; Feng, Cong

来源：SEPARATION SCIENCE AND TECHNOLOGY, TAYLOR & FRANCIS INC, 530 WALNUT STREET, STE 850, PHILADELPHIA, PA 19106 USA, 195-206, 2019-01-02.

DOI：10.1080/01496395.2018.1504795

• Low-grade manganese ore
• selective reduction
• magnetic separation
• thermodynamics

The selective reduction of low-grade manganese ore followed by magnetic separation was proposed to produce rich-manganese ore. The optimized parameters include a roasting temperature of 1050 degrees C, a roasting time of 6 h, a manganese ore size of 8-13 mm, and an FC/O ratio of 2.5. The reduction roasting products of low-grade manganese ore, mainly comprising of MnO, metallic iron, and residual gangue, could be separated effectively to obtain rich-manganese ore and magnetic product. The RMn, RFe, and TMn can reach the peak values of 71.00%, 93.60%, and 56.20wt%, respectively, at a rational magnetic field strength of 100 mT. In particular, the Mn/Fe ratio is up to 10.85, which meets the requirements of ferromanganese alloy smelting.

• 出版日期2019-1-2
• 单位东北大学