Experimental study on magnetic roasting-separation of refractory hematite limonite

In this paper,tests of mineral processing were finished on the ref ractory hematite limonite of Shanxi with iron content about 24.05%,rate of magnetism(FeO/ TFe) about 0.6%.Grindability and tech-nique of mineralogy of this iron ore were described.The major study was put attention on efficiency of magnetic separation at high intensity and reducing roasting-magnetic separation.Tests of reducing roasting-magnetic separation could attained good results as: concentrate iron grade be about to 58%,recovery of iron above 60%.