Experimental Study on Magnetic Flotation Combined Beneficiation Process of a High Sulfur Iron Mine Abroad
In order to provide a technical basis for the development and utilization of a high sulfur iron ore resource abroad,a detailed process mineralogy study was firstly conducted on the raw ore.On this basis,beneficiation process tests were conducted and the optimal beneficiation process flow was determined.Finally,the quality of obtained iron concentrate was examined.The research results of process mineralogy are concluded as follows.The main useful element of iron content in the raw ore is 35.96％,of which 89.35％is magnetic iron.The main harmful element of S content is 0.45％,and it mainly exists in the form of sulfides,accounting for 55.56％.The main target mineral recovered from the raw ore is magnetite,with a content of 44.62％.The particle size distribution is uneven,mainly consisting of medium and fine particles,with a distribution rate of 55.58％in the-0.07 mm particle size range.The results of the beneficiation process tests show that the process scheme of wet pre-magnetic separation before grinding,grinding,low intensity magnetic separation for iron,and desulfurization through flotation for the raw ore has obtained an iron concentrate with a yield of 45.37％,an iron grade of 65.39％(sulfur content of 0.22％),and an iron recovery rate of 82.44％.The beneficiation indicators are relatively good.The product inspection results show that the S,P,F,K2O+Na2O of iron concentrate all meet the quality standards of iron concentrate.
万方数据
维普
