摘要
云南某铁尾矿含铁17.11%,可选铁主要以磁铁矿的形式存在,其次是赤、褐铁矿,细度为-0.074 mm 42.51%,采用弱磁、强磁抛尾,抛尾粗精矿再磨至-0.074 mm 91%后经弱磁—摇床分选,可得到产率为11.48%,品位为59.51%,回收率为39.58%的铁精矿,可实现铁的综合回收利用。
The iron-ore tailings in Yunnan has an iron grade of 17. 11%,the recoverable iron exists mainly in the form of magnetite,followed by hematite and limonite,the fineness being 42. 51%,-0. 074 mm. An iron concentrate product with the yield of 11. 48%,the grade of 59. 51% and the recovery of 39. 35% can be obtained by using the process of low-intensity magnetic and high-intensity magnetic separations for rejecting tailings,re-grinding,low-intensity magnetic separation and shaking table gravity concentration,to achieve the recovery of iron.
引文
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