TY JOUR TI TO THE QUESTION OF CLEANING OF EXHAUST OIL FROM NON-SOLUBLE IMPURITIES IN A HYDROCYCLONE KW hydrocyclone KW oil purification KW forces acting on the particle KW separation criterion KW geometric parameters JO Vestnik of Kazan State Agrarian University AU Gluschenko, A.A. AU Molochnikov, D.E. AU Yakovlev, S.A. AU Gayaziev, I.. PY 2018 IS 13 PB Kazan state agrarian University