FIELD: production of building materials. SUBSTANCE: jet mill has acceleration pipe and converging tube. Acceleration pipe is made narrowing towards converging tube. Interrupting arrangement is placed between acceleration pipe and converging tube. Diameter of acceleration pipe mouth is equal to 0.2-0.5 of acceleration pipe inlet diameter. Size of particles after milling is up to 10 mcm. Capacity is 8-10 times higher. EFFECT: increased capacity. 1 dwg
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