Abstract: The content of Li₂O and Rb₂O in fluorite tailings abroad is 0.49% and 0.37%， respectively. Lithium and rubidium in mica minerals accounted for 55.56% and 56.14% of total lithium and rubidium， while the rest were found in other aluminosilicate minerals. Since the particle size of mica minerals is mainly 0.01 to 0.15 mm and the liberation degree is as high as 87%， subsequent grinding does not require re-grinding. In order to determine the lithium and rubidium recovery process， mineral processing experiment was conducted. The results show that with slurry pH=4.5， dodecylamine （280 g/t） used as collector， sodium dodecyl benzene hydride （60 g/t） used as foaming regulator， lithium-rubidium mixed concentrates with Li2O and Rb2O grade of 1.07% and 0.79%， and Li2O and Rb2O recoveries of 46.32% and 45.29% were obtained via one rough three cleaning and middlings back to the flowsheet in return process. Therefore， the comprehensive recovery of lithium rubidium was achieved.

Key words: Rubidium oxide, Lithium oxide, Mica, Flotation, Comprehensive utilization.