Experimental Study on Smelting Si-Mn Alloy by Microwave Heating of Low-grade Manganese Ore
Received:March 19, 2019  Revised:March 25, 2019
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DOI:doi:10.3969/j.issn.1007-7545.2019.08.016
KeyWord:microwave heating; low-grade manganese ore; carbon ratio; alkalinity; mixed manganese ore
                 
AuthorInstitution
GAO Qi 钢铁研究总院
PANG Jianming 中国钢研科技集团有限公司资源应用与合金材料事业部
MA Yongning 陕西盛华冶化有限公司技术中心
WEI Yunlei 陕西盛华冶化有限公司技术中心
WEI Yunsong 陕西盛华冶化有限公司技术中心
LI Xingbo 陕西盛华冶化有限公司技术中心
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Abstract:
      Low-grade manganese ore containing carbon pellets reduction is smelted with microwave heating to prepare Si-Mn alloys. Effects of reductant type, carbon ratio and alkalinity on recovery rate of manganese were investigated. The results show that Si-Mn alloy can be smelted by microwave heating of carbon-containing low-grade manganese ore pellets. Manganese recovery rate is 63.3% with charcoal as reductant, whose smelting effect is obviously better than blue carbon. Carbon ratio and alkalinity have a significant effect on smelting effect. The optimum carbon ratio is 1.3 and the optimum alkalinity is 0.7. Increasing manganese content in mixed manganese ore by mixing high-grade manganese ore has no significant effect on manganese recovery rate.
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