吉林临江难选铁矿石焙烧磁选试验研究

Experimental Study on Roasting-magnetic Separation for Linjiang Refractory Iron Ore of Jilin

吉林临江羚羊铁矿石含赤铁矿、磁铁矿、褐铁矿和菱铁矿等含铁矿物,铁矿物组成和构造极为复杂,脉石矿物鲕绿泥石极易泥化,故该矿石是一种极为难选的铁矿石。通过对该矿石进行焙烧—磁选试验表明,在适宜的条件下,焙烧—磁选可以使精矿品位最高达到60.83%,尾矿品位27.60%,精矿回收率64.10%。该试验研究为吉林临江羚羊铁矿石的利用奠定了基础。

Lingyang iron ore of Jilin linjiang contains the hematite, magnetite,limonite and siderite,which has a complex Fe composition and structure. And the gangne mineral as chamosite was easy to be slimed. So this kind of ore is a refractory one. The experiments of roasting-magnetic separation for the iron ore showed that at a suitable condition, the Fe concentrate reached up to 60.83% at an iron recovery of 64.1% and Fe grade in tailing of 27.60% by the roasting-magnetic separation, thus laying a foundation for application of Lingyang iron ore in Jilin Linjiang.