Abstract: New process of high gradient high intensity magnetic separation-flotation is investigated on the Dalucao rare earth ore in Dechang of Sichuan Province，in view of the low recovery (30%~40%) in the process of gravity separation by shaking table-high gradient high intensity magnetic separation.The results indicated that，with the grinding fineness of 100% passing 0.12 mm(84.67% passing 0.075 mm) by the laboratory closed circuit grinding，the discarding rate of tailing reached 82.22% by the high gradient magnetic separation process of one roughing and one scavenging.Then，with sodium carbonate as pH modifier，sodium silicate as depressor，new oximeacid chelating GYF as collector，rare earth concentrate with REO grade of 60.20% and REO recovery of 63.00% was obtained by treating the rough concentrate above through the closed circuit flotation of one roughing，two cleaning and one scavenging.Recovery of REO is increased by 20%，compared with the previous production process.

Key words: Rare earth ore in Dechang Dalucao of Sichuan Province, Closed circuit grinding method in the lab, High gradient high intensity magnetic separation, Flotation, New oximeacid collector GYF