Abstract:Chemical analysis method,Refection Polarizing Microscope(PMR POL),X-ray Diffraction(XRD),analysis type Scanning Electron Microscope(SEM), and Electron Microprobe Analysis(EMPA) were conducted to study the technological mineralogy and sorting properties such as the elements composition,Smineral species and composition,disseminated and inclusions characteristics ,and the occurrence state of beneficial and harmful elements of a high phosphorus and high iron manganese ore in Yunnan,and on this basis, the research of manganese ore beneficiation technology was carried out. The results show that the technological type of this ore belongs to high phosphorus and high iron manganese ore and the grade of manganese ore is Mn 14.77%, TFe 9.39%, P 0.20%, P/Mn=0.0135, Mn/TFe=1.57.The main manganese minerals are pyrolusite, a small amount of manganese are grossularite, other metal minerals are limonite, the main gangue minerals are quartz, sericite, chlorite.SSPyrolusite is closely connected with limonite and quartz, and the intercalation relationship is complicated.SManganese exists mainly in the form of the pyrolusite, and a small amount in the form of the grossularite.Iron is mainly in the form of the limonite. The harmful element phosphorus occurs mainly in the form of isomorphism or absorption in pyrolusite, grossularite and limonite, and partly in the form of inclusion in quartz and other minerals.The results of experimentalSstudySon mineral processingSofSthe manganese ore show that manganese concentrate grade of 29.52% 、 recovery of 79.37% and P/Mn=0.088 was achieved through the high gradient magnetic separation process, which was once rough grinding and grinding fineness of -74μm accounted for 65% , once roughing and once cleaning to the rough concentrate.