TY JOUR TI Theoretical dependences of separation of crushed grain on perforated cone surface KW cone perforated surface KW the process of separation KW roller separator KW grinding KW passing particle KW grain KW particle velocity JO Forestry Engineering Journal AU Druzhinin, R.. AU Andrianov, E.A. AU Trufanov, V.. AU Solyannikov, M.. PY 2013 IS 3 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov