FIELD: ore concentration, chemical industry, metallurgy. SUBSTANCE: drum mill has driven lined drum, charging and discharging trunnions secured in supports. Support of charging trunnion is installed on guides parallel to axis of drum rotation for movement and fixing in required position. Mill has lined ring inserts installed between drum and movable charging trunnion. Ring inserts are made of different lengths, multiple of length of shortest insert. EFFECT: enlarged operating capabilities. 2 dwg
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