Abstract: In order to efficiently utilize the potential fluorite resources of Bayan Obo tailings，aiming at the problems of fine particle size of tailings，complex test process of comprehensive recovery of fluorite and low recovery efficiency of fluorite，the superconducting tailings treated by permanent magnet-electro⁃ magnetic-superconducting process of Bayan Obo main east mine tailings were used as raw materials to car⁃ ry out the beneficiation process test of comprehensive recovery of fluorite from tailings. The test results show that the two-stage combined flotation process is adopted with 2# as the regulator，acidified sodium silicate as the inhibitor and sodium oleate as the collector. The first stage flotation adopts one roughing and three cleaning flotation process，and the second stage flotation is the re-purification of the first stage flota⁃ tion concentrate by one roughing and one cleaning. Finally，high-grade fluorite concentrates with CaF2 grade of 90.82% and CaF2 recovery of 30.14% can be obtained，which provides theoretical guidance for the subsequent comprehensive recovery of fluorite from fine-grained Bayan Obo tailings.

Key words: micro-fine particle, fluorite, Bayan Obo tailings, flotation