FIELD: recovery of artillery pyroxilyn tubular gun powder. SUBSTANCE: apparatus for grinding tubular gun powders to produce roll-shaped pellets of uniform size has gravitational chute with set of knives and roller with elastic-deformation surface. Roller is spaced from set of knives by distance less than diameter of powder tube. Prior to grinding, annular recesses are cut in powder tubes. Final separation is effectuated by disks on rotors. EFFECT: increased efficiency in recovery of gun powder, simplified construction and enhanced reliability in operation. 3 dwg
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