Beneficiation of High Alumina Indian Iron Ore Slimes by Magnetic Carrier Technology
The separation of iron values from a typical Indian iron ore slimes containing 57.2% Fe, 5.81%SiO2 and 7.05% Al2O3 by wet magnetic separation and selective magnetic coating is investigated.The iron phases, which are mostly paramagnetic in nature, have been coated with magnetite or colloidal magnetite in presence of surfactant by manipulating the surface properties of the minerals.The studies have indicated that an iron concentrate containing 62.32% Fe with 66.5% iron recovery can be obtained at medium magnetic intensity of 7.8 kG which is much less compared to normal magnetic intensity of 13 kG to 14 kG required for hematite-goethite separation. The performance of this technique with respect to both grade and recovery is superior to conventional magnetic separation or flotation of iron ore slimes.
Iron ore slimes Beneficiation Colloidal magnetite Magnetic carder technology Selective coating
B. Das S. Prakash B. K. Mishra
Institute of Minerals and Materials Technology, Formerly Regional Research Laboratory,Council of Scientific and Industrial Research CSIR, Orissa, India
国际会议
XXIV International Mineral Processing Congress(第24届国际矿物加工大会)
北京
英文
768-773
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）