Separation Process Test of a Low Grade Refractory Iron Ore
The total iron grade of a refractory iron ore is 32.80%.The mineral composition is complex and the particle size of the mineral is fine.In order to determine the subsequent reasonable grinding pro-cess,the beneficiation process test is carried out.The test results show that the iron concentrate with yield of 39.47%,iron grade of 65.14%and iron recovery of 78.38%can be obtained by stage grinding-magnetic sep-aration-elutriation upgrading process under the conditions of grinding fineness of-74 μm 85%in the first stage and grinding fineness of-45 μm 75%in the second stage.The iron grade of tailings is 11.71%.Satisfac-tory test indexes are obtained.
micro-fine refractory iron orestage grindingelutriation and upgrading
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