Abstract: As harmful element phosphorus concentrated in iron particles during reduction of oolitic iron ore， the reaction process of phosphorus migration was investigated. During the reaction process， reaction time is 80 min and reaction temperature are 1200， 1225， 1250 and 1275℃， respectively. Phosphorus distribution are analyzed in slag phase and metal phase and phosphorus migration route is also discussed. The results show below 1225℃ phosphorus content gradually increases from slag phase to phase interface， but decreases from phase interface to inner metal phase， and phosphorus content increases from phase interface to inner metal phase while temperature increases above 1250℃. Phosphorus migration route is also confirmed eventually. Firstly phosphorus exists in phosphate， phosphate reacts with carbon when the reaction begins， and then simple substance phosphorus is created and migrates into metal phase.

Key words: oolitic iron ore, phosphorus, distribution regularities, migration route