Abstract: Main valuable minerals of a zinc-iron ore is zinc and ferrum，associated with Ag and Cd that can be comprehensively recovered.Due to the complex properties of the ore，main valuable minerals of sphalerite and magnetite are fine disseminated，and hardly to be liberated from its gangue，which belongs to refractory zinc-iron ore.Beneficiation experiment is carried out in order to provide basis for development and utilization of the ore.The results showed that at the grinding fineness of 85% -0.074 mm and regrinding fineness of 70% -0.038 mm，using lime as the modifier，copper sulfate as activator，and butyl xanthate as collector，zinc concentrate with zinc grade of 49.15% and recovery of 91.01% is obtained through one roughing-four cleaning-two scavenging flotation process.Ag of 162 g/t，and Cd of 0.25%，are enriched in zinc concentrate，with recovery of 58.12% and 92.58% separately.Iron concentrate with iron grade of 63.18% and recovery of 56.09% is received by dealing with tailings of flotation，through low intensity magnetic separation- two cleaning of low intensity magnetic separation at the regrinding fineness of 82% -0.043 mm for rough concentrate.

Key words: Zinc-iron ore, Flotation, Low intensity magnetic separation, Regrinding of rough concentrate