Abstract: The formation and technical advantages of Preconcentration-Suspension Roasting-Magnetic separation (PSRM) technology have been pointed out with a brief analysis.Donganshan refractory iron ore was typical lean hematite with iron grade of 31.63%，through PSRM scale-up continuous test，iron concentrate with iron grade of 66.55%，total recovery of 77.01% was obtained.The East of Ansteel integrated tailings (TFe grade of 10.60%) was treated by PSRM scale-up continuous test，the iron concentrate with iron grade of 65.69% and total recovery of 55.33% was achieved.The JISCO fine ore was hard to be separated for its complex mineral composition，but using the PSRM technology，concentrate with iron grade of 60.30% and the recovery of 79.49% could be obtained.These refractory iron ores could be efficiently utilized by the PSRM technology.Good beneficiation index could be obtained via PSRM technology for Donganshan refractory iron ore，East of Ansteel integrated tailings，JISCO fine ore，and equipment operation is stable，concentrate indexes has greatly increased.PRSM technical is abig breakthrough in complex and refractory iron ore resources beneficiation technology.

Key words: Refractory iron ore, Suspension Roasting, Efficient utilization