摘要
某高硅低品位氧化铁矿石铁品位为25%左右。该铁矿石筛分成粉矿、块矿后进行预选抛尾。粉矿预选精矿磨矿后进行强磁选,精矿铁品位可达41.20%以上,SiO_2含量16.22%以下。块矿预选精矿经阶段磨矿阶段弱磁选-反浮选,精矿铁品位可达61.20%以上,SiO_2低至8.82%以下。
The Fe grade of a high silicon low grade iron oxide ore is about 25%. Tailings were partially discarded after divided to powder ore and lump ore. After grinding and concentrate of powder ore, the grade of concentrate iron can reach 41.20% and the content of SiO2 is below 16.22%. The ore grade of concentrate is 61.20% or higher and the SiO2 is as low as 8.82% after stage grinding, weak concentrate and reverse flotation for the pre-selected concentrate lump ore.
作者
秦丽娜
秦彩霞
QIN Li-na QIN Cai-xia(Gansu Provincial Key Laboratory for Iron Ore Resource Utilization Technology Center of Jiuquan Iron and Steel （Group） Co.ration, Jiayuguan, Gansu, 735100)
关键词
高硅
低品位
氧化矿
选矿
high silicon
low grade
oxidized ore
beneficiation
