Abstract: In order to provide basic information to the in-depth study on the efficient beneficiation of oxidized ores from Yuanjiacun Iron Mine, research tests of beneficiation practicability for three main oxidized ores including quartz-type oxide ore, quartz-specularite oxide ore, and amphibole oxide ore were made. The results showed that: the quartz and the quartz-specularite oxide ores have a relative good optional condition. Under the final grinding fineness of  85% -0.037 mm, iron concentrate with Fe grade of 65.65% and 65.23% and Fe recovery of 78.03% and 79.45% were obtained respectively by the stage grinding process of low-intensity magnetic separation-high gradient high intensity magnetic separation-anionic reverse flotation. However, the amphibole oxide ore shows a poor performance in separation, and is difficult to be concentrated by the traditional physical beneficiation methods. And it requires to carrying out the study of the magnetic roasting or deep reduction method.  

Key words: Yuanjiacun Iron Mine, Oxidized ore, Low intensity magnetic separation, High gradient high-intensity magnetic separation, Anionic reverse-flotation