Rare-earth ore beneficiation method

The invention belongs to the technical field of rare-earth ore production, and provides a rare-earth ore beneficiation method. Three times rough flotation and three times fine flotation are adopted, NaOH, water glass and alkyl hydroximic acid used as a first collecting agent are added in the first rough flotation, on the basis of sodium hydroxide, a surfactant of sodium potassium tartrate, sodiump-toluenesulfonate and a sodium cocoyl methyl taurate mixture are added into a fifth collecting agent, on the basis of the sodium hydroxide, a non-ionic surfactant of dodecyl glucoside and a sodium dodecyl sulfate mixture are further added into a sixth collecting agent. By adopting the rare-earth ore beneficiation method, final concentrate of the rare-earth ore grade (REO) obtained is 70% or above, the recovery rate is 85% or above, the impurities are low, and the rare earth ore grade, the recovery rate and the purity are all high; and in addition, the method does not need complex equipment, and the feasibility is hig