TUBULAR MILL Russian patent published in 1994 - IPC

FIELD: manufacture of industrial building materials. SUBSTANCE: tubular mill has main revolving drum housing coaxially mounted auxiliary drum and milling charging in which auxiliary drum is located inside the main drum in dead zone of milling charging and material. The drum is plugged on both sides and is provided with cylinder-shaped members freely positioned on its outer side surface along the whole its perimeter. EFFECT: enhanced operating capability. 2 cl, 2 dwg