Abstract:Inhibitors and are usually used to inhibit fluorite and gangue minerals during the beneficiation of fluorite type rare earth ore, and the rare earth minerals can be preferentially separated from fluorite and gangue minerals by using oxime collector, then the purify rare earth concentrate can be obtained from rare earth flotation concentrate by means of magnetic separation technology. The fluorite is recovered from the rare earth flotation tailings. Although the rare earth minerals in fluorite type rare earth ore has been recoveried efficiently through this process and reagents,however, oxime collectors have certain toxicity, and the floatability of fluorite is strongly inhibited during the rare earth preferential flotation operation, which is not conducive to the recovery of fluorite again from the rare earth flotation tailings. Therefore, non-toxic flotation reagent and rare earth fluorite synchronous flotation - mixed concentrate of rare earth and fluorite separation technology was used to carry out test research on a complex refractory fluorite type rare earth ore in this paper. The beneficiation principle process is as follows: raw ore grinding - sulfur floating - rare earth and fluorite synchronous flotation from sulfur floating tailings –separation ofrare earth and fluorite mixed concentrate by using flotation and magnetic process.The flotation separation operation of mixed concentrate eliminates the adverse effect of non-selective heteroagglomerates formed by interaction of different mineral particles with collector, the index of rare earth concentrate was obviously improved. The raw ore of fluorite type rare earth ore with REO grade of 1.51% and CaF2 grade of 16.13% was dealt with process including sulfurfloating, one timesynchronous primaryflotation for sulfur floating tailings, six times synchronous clean flotation, four times flotation separation and two magnetic separation for rare earth and fluorite mixed concentrate when the raw ore grinding finness of -0.074 mm accounts for 85%. The REO grade and recovery rate of rare earth concentrate was 53.81% and 52.56% respectively, the CaF2 grade and recovery rate of fluorite concentrate was 92.03% and 67.77% respectively in the closed-circuit test. The green synchronous recovery of rare earth and fluorite from the fluorite type rare earth ore was realized, furthermore,a reference method for separation and purification of rare earth and fluorite mixed concentrate was also provided.