Abstract: Main valuable mineral of a fluorocarbon cerium rare earth ore from Sichuan is bastnaesite，dissemination relationship among useful minerals and gangue minerals is complex.For the development and utilization of the ore，experimental study on the ore dressing.A bastnaesite with complex disseminated relationship of gangue minerals and containing a amount of mudding.Beneficiation experiments were carried out for development and utilization of the ore.Results show that at the grinding fineness of 85% passing 0.074 mm，with sodium silicate as the adjusting agent，modified hydroxyl oxime acid as collector，via two roughing-two cleaning-one scavenging closed circuit flotation process，flotation concentrate with REO grade of 42.30% and recovery of 72.59% was obtained，flotation concentrate through one stage pulsating high gradient high intensity magnetic separation operation at background magnetic induction intensity of 1.0 T，rare earth concentrate with REO grade of 60.20%，recovery to the operation of 93.00%，recovery to the run-of-mine ore of 67.10% was finally obtained，effective separation of the fluorocarbon cerium rare earth ore was obtained.

Key words: Bastnaesite ore, Modified hydroximic acid, Flotation-pulsating high gradient high intensity magnetic separation