贵州赫章高铝鲕状赤铁矿铝铁分离研究

摘要

贵州赫章高铝鲕状赤铁矿主要铁矿物为赤铁矿和褐铁矿,含铝矿物三水铝石以细粒集合体和隐晶质被赤铁矿包裹,铁铝赋存关系复杂.研究表明,添加YS -1,采用直接还原—干式磁选工艺能有效地实现高铝鲕状赤铁矿中铝和铁的分离,当原矿全铁含量为42.56％,Al2O3含量为12.30％时,可获得全铁品位为93.16％,Al2O3,含量为2.02％的还原铁产品,铁回收率为88.45％.%Iron minerals are hematite and limonite mainly of High-aluminum oolitic hematite of Cuizhou Hezhang, gibbsite of aluminum-bearing minerals enwrapped by hematite as fine granules and cryptocrystalline,the existential relation between iron and aluminium in the ore is complex. Studies show that adding YS-1 .most of aluminum can be removed by direct reduction-dry magnetic separation process. Reduced iron product bearing 93.16%TFe,2.02% A12O3 can be obtained by processing a raw ore with 42.56%TFe,12. 30% Al2O3 ,and the iron recovery reaches 88. 45%.