Method for granulating amorphous boron powder

The invention discloses a method for granulating amorphous boron powder, and in particular relates to a method for kneading and granulating amorphous boron powder for fuel-rich propellant. The method for granulating amorphous boron powder comprises the following steps: (1) premixing ethyl acetate, liquid polyurethane adhesive prepolymer, isocyanate curing agents and curing catalyst well according to a mass ratio which is 40-50:8-9:1-2:0.1-0.05 and controlling material temperature to between 35 and 40 DEG C; (2) mixing the amorphous boron powder with the premixed material; and (3) passing the obtained granular material through a 30-mesh standard sieve and drying the obtained granular material. In the process of granulating the amorphous boron powder, the method adopts the ethyl acetate which has little harm to environment and low dosage as a solvent for dispersing adhesive, and adopts a star-type stirring paddle to ensure that agglomerate mixtures can be denser under the cutting and extruding action of the sti