TY JOUR TI CALCULATION OF OPTIMAL DIAMETER OF THE SCREW FEEDER TO FEED MATERIAL INTO THE GRINDING CHAMBER OF THE MILL KW cage mill KW productivity KW screw tube KW material JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Voronov , V.. AU Semikopenko, .. AU Yurchenko , D.. PY 2017 IS 2 PB Belgorod State Technological University named after V.G. Shukhov