国外某低品位含硫磁铁矿选矿试验

Beneficiation Experiments on a Low Grade Sulfur-bearing Magnetite Ore Abroad

为合理开发国外某低品位含硫磁铁矿，根据该铁矿石的性质特点及国内外类似铁矿选矿生产实践，进行了原矿（10～0 mm）湿式粗粒磁选预选抛尾—阶段磨矿—弱磁选—浮选脱硫工艺试验。试验获得了产率为45．37％、铁品位为65．39％、硫含量为0．22％、铁回收率为82．44％的铁精矿，还获得了产率为3．86％、铁品位为61．92％、硫含量为2．59％、铁回收率为6．64％的次铁精矿，选别指标较好，为该类含硫磁铁矿石的开发利用提供了技术依据。

In order to rationally develop a low grade sulfur-bearing magnetite ore abroad,discarding （-10 mm）by coarse wet magnetic separation-stage grinding-low intensity magnetic separation-desulfuriza-tion via flotation process was conducted based on the characteristics and the properties of the ore,and al-so beneficiation production practice on similar iron ore both at home and abroad.Iron concentrate with yield of 45.37%,65.39% Fe,0.22% S,and iron recovery of 82.44% was obtained and also second-grade concentrate with yield of 3.86%,61.92% Fe,2.59% S,and iron recovery of 6.64%.The index is good,and can provide technical basis for the development and utilization of the ore.