TY JOUR TI MODERN TECHNOLOGIES OF MATERIALS FOR PROTECTION THE WORKING SURFACES OF HYDROCLONE AGAINST WEAR KW portland cement KW hydrocyclone KW wear KW performance KW work efficiency KW durability KW wear-resistant materials KW classification KW stone casting KW elastomers KW high-manganese steel KW wear-resistant surfacing and coatings JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Fadin, Y.M. AU Hahalev, P.A. AU Trapeznikova, E.G. PY 2019 IS 4 PB Belgorod State Technological University named after V.G. Shukhov