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A method for producing monodisperse spherical granules includes heating a dispersed chemically active material that contains at least one rare-earth metal, melting the material in a pot to form a melt, forming a laminar jet when the melt flows through a die made of a high-melting metal, forming a flow of monodisperse drops when the jet disintegrates under an action of perturbations applied with a set frequency, collecting any granules formed after switching to a stationary granulation mode, wherein, before the melt is fed to the die, an outer surface of the melt is covered with a film of an oxide of a dispersed chemically active material, helium is bubbled within the melt, mechanical impurities are removed from the melt.