Abstract: Investigation on the reduction roasting and synchronous dephosphorization for a iron mine with complex composition, fine dissemination and high content of phosphorus in Yunnan Huimin area was made to determine the appropriate temperature and time of reduction roasting, the dosage of reducing agents and dephosphorization agent.The results showed that when the mass ratio of coal and ore is 2∶5, mass ratio of dephosphorization agent and ore is 1∶2 for reduction time at 50 min and reduction temperature at 950 ℃, by which iron concentrate products with Fe grade of 93.46%,phosphorus content of 0.05% were obtained from the reduction products by grinding-low intensity magnetic separation. 

Key words: High-phosphorus iron ore, Reduction roasting, Magnetic separation, Reducing agent, Dephosphorization agent