TY JOUR TI MODELLING OF BI-DIRECTIONAL ROTARY IMPACT ON THE MATERIAL IN THE SPHERICAL MIXING CHAMBER KW trajectory of material motion inside the mixing chamber KW mixer KW rotation around two the mutually perpendicular axis KW conical gears JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Yudin, K.A. AU Degtyar', A.N. AU Harin, N.P. PY 2017 IS 2 PB Belgorod State Technological University named after V.G. Shukhov