Abstract:

In order to promote the effective development and utilization of China's lean  ，  fine and mis⁃

cellaneous refractory iron ore，according to the characteristics and development difficulties of domestic iron

ore resources，the current situation of refractory iron ore resources is described in detail.Beneficiation tech⁃

nology and methods of siderite，limonite，micro-fine hematite，ultra-lean magnetite，complex polymetallic

iron ore and related research results of mineral processing workers are summarized.Finally，the high-effi⁃

ciency separation technology of refractory iron ore is prospected in order to promote the efficient develop⁃

ment and utilization of lean，fine and mixed refractory iron ore in China.

Key words:

refractory iron ore, magnetization roasting, reverse flotation, magnetic separation, high

pressure roller mill