Dephosphorization of high-level phosphorus iron ore by gas-based reduction and melt separation

作者：Zhao Zhi Long; Tang Hui Qing; Guo Zhan Cheng^*

来源：Journal of University of Science and Technology Beijing, 2009, 31(8): 964-969.

• Co-reduction
• Dephosphorization
• High phosphorus iron ore
• Hubei Province
• Melt separation
• Metal samples
• Metallurgical process
• Mineral phasis
• Numerical simulation
• Phosphorus contents
• SEM and EDS analysis
• Technical route
• Thermodynamic simulations

The traditional methods of mineral and metallurgical processes are very difficult in treating the high-level phosphorus iron ore from west Hubei Province of China to meet the requirements of the iron and steel industry. A new technical route, gas-based reduction and electrical furnace melt separation, was proposed and demonstrated. Based on the mineral phases, thermodynamic simulation (performed with HSC) was carried out first, and then gas-based reduction experiment and electrical furnace melt separation experiment were conducted. Gas-based reduction results agree with the numerical simulation. The phosphorus content decreases from 1.28% in the ore sample to 0.27% in the final metal sample by using CO reduction and melt separation; and it decreases from 1.27% in the ore sample to 0.33% in the final metal sample by using H2 reduction. The melt separation SEM and EDS analyses of metal samples after melt separation show P exists as impurities. These impurities can be removed by refining methods in the melting stage to meet the requirements of steelmaking.

• 出版日期2009
• 单位北京科技大学