TY JOUR TI DETERMINATION OF DESIGN PARAMETERS OF A STEP DISK MILL KW material KW particle KW disk mill KW grinding KW grinding chamber JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Semikopenko, I.A. AU Voronov, V.P. AU Latyshev, S.S. AU Sevost'yanov, V.S. AU Rybak, L.A. AU Sevostyanov, A.E. AU Vavilov, D.V. PY 2021 IS 6 PB Belgorod State Technological University named after V.G. Shukhov