Evaluation the Mineralogical Process of a Rich Iron Mine in Mongolia
In this paper, an evaluation about the process mineralogy of the rich iron mine in Mongolia with comprehensive methods is given; this provides foundation of the comprehensive recovery of iron and cobalt in the ore.The research shows that the irons grade is 61.23.%, Cos grade is 0.02%, the ore is rich iron ore and its Co content also reaches border mining grade. For the ore, if want get high grade iron concentrate powder, must identify the mineral composition and the occurrence of iron and take into account the recovery of Co content as associated resources.Chemical phase analysis results show that 86.35% of iron exists in magnetite, which means that the theoretical recovery ratio of iron is close to 86%. Minerals spectrum analysis confirmed that the magnetite containing a small amount of Mg, Al, and other impurities, the actual iron minerals to 70.28%, which means that theoretically iron grade iron concentrate only close to 70.28%.Based on the result of iron chemical phase analysis, by investigating the liberation of sulfide minerals and gangue, the recovery index of iron can be forecasted, when grinding fineness is 35%,45%, 55% and 65% bellow 0.074mm, theoretical content of Fe in iron concentrate separately is 67.71%, 67.88%, 68.78%, and 69.43%, accordingly the theoretical recovery of Fe is 87.38%,87.05%, 86.92% and 86.63%. From the perspective of process mineralogy, the forecast mineral beneficiation indicators show that the ore is easy sorting ore, iron processing operations have higher recovery rate, but wants sorting of high-grade iron ore concentrate still need appropriate grinding fineness.Furthermore, associated element Co, existing mostly in pyrite and pyrrhotite, is valuable in the ore. Pyrite and pyrrhotite have ideal liberation under grinding, so cobalt can be easily enriched in sulfide concentrate.
Process mineralogy Rich iron ore Chemical phase analysis Liberation degree Beneficiation indicators
H. D. Yu C. Y. Sun
University of Science and Technology Beijing, Beijing general Research Institute of Mining & Metallu Beijing general Research Institute of Mining & Metallurgy, Beijing China
国际会议
XXIV International Mineral Processing Congress(第24届国际矿物加工大会)
北京
英文
181-186
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）