To efficiently and rationally utilize gold telluride ore,systematic process mineralogy studies were carried out on gold ore in Gansu using chemical multi-element analysis,MLA,scanning electron microscopy,and other methods.The research results showed that gold in the ore mainly exists in the form of needle telluride gold-silver minerals,with the grain size mainly distributed below 0.037 mm;the main metal sulfides in the ore are pyrite and the main gangue mineral is quartz,and pyrite is the main carrier mineral.The occurrence forms of gold are mainly pyrite intergranular gold,pyrite fracture gold,and pyrite inclusion gold.The ore contains a certain amount of easily slime-forming minerals (such as sericite and chlorite),which are easy to float up with the concentrate during the flotation process,lowering the concentrate grade.Moreover,the ore has the characteristics of difficult dissolution and dissociation during the leaching process,which requires fine grinding,high alkalinity,and large air infusion capacity to achieve effective recovery and utilization.Considering all factors,the best mineral processing indicators can be achieved by grinding the ore to a particle size distribution of 95 %-0.074 mm.