Based on the mineralogical characteristics of a difficult to select low-grade iron ore,a mineral processing experiment was conducted using the"high-pressure roller milling-SLon large par-ticle strong magnetic pre disposal-grinding-SLon strong magnetic impurity removal-reverse flotation desilication and refinement"process.The results show that under the optimal conditions,high-quality iron concentrate with TFe grade of 66.12％,SiO2 grade of 2.06％,and Fe recovery rate of 62.48％can be obtained on the basis of Fe content of 35.75％and SiO2 content of 36.14％in the original ore.The tailings obtained from large particle pre selection and disposal can be used as building materials.The comprehensive utilization of difficult to select low-grade iron ore has been achieved.
关键词
铁矿石/预选抛废/SLon高梯度磁选机/反浮选脱硅/磁浮联合
Key words
iron ore/pre-selection discard/SLon VPHGMS/reverse flotation desiliconization/magnetic separation-flotation combined process
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