Applied Mineralogical Study of Intergrown Iron-molybdenum Oxidized Ore
The molybdenum ores currently utilized in China are mostly molybdenum sulfide ores, whereas oxidized molybdenum ores have not been exploited and utilized efficiently. The aim of this article is to study the applied mineralogy of an intergrown iron-molybdenum oxidized ore in order to provide a mineralogical basis for the ore beneficiation research.The ore occurred in a surface oxidized zone seam and contained 23.65 % Fe2O3 and 1.58% Mo.Various characterization techniques were employed to study the chemical composition and mineral composition of the ore, the particle size distribution of the minerals in the ore, and the texture and structure of the ore. The results showed that the iron-molybdenum ore occurred in a wet, soft and earthy state. The ore was composed mainly of several oxidized minerals and colloidal minerals, including wulfenite, barite, limonite and quartz. Wulfenite was one of the major and stable components in the ore and occurred as a separate mineral. Wulfenite, barite and quartz were granular minerals with particle size ranging from fine to coarse but mainly in the fine particle range. Limonite showed a crust and honeycomb-like colloidal state and composed the framework in the ore for the formation of the other minerals. They filled the pores in the framework and the size of the pores affected the size of the minerals formed in the pores and hence the recovery of wulfenite in ore beneficiation. According to the applied mineralogical properties of the oxidized molybdenum ore, a promising ore beneficiation process was proposed as follows:Magnetic separation should be carried out first to separate the magnetic iron minerals and then the molybdenum mineral will be recovered by gravity concentration or a combination process of gravity concentration and flotation, depending on the distribution of the molybdenum mineral in the product of the magnetic separation.
Applied mineralogy Iron-molybdenum ore Limonite Wulfenite Barite
W. H. Yong W. Q. Gong Y. S. Zhang
School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, 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
192-196
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）