TY JOUR TI METHODOLOGICAL FEATURES OF DETERMINATION THE SPECIFIC SURFACE ENERGY OF MINERAL QUARTZ-CONTAINING POWDERS KW highly dispersed powders of quartz sand KW specific surface energy KW OWRK method KW coefficient of determination KW pressing force JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Frolova, M.A. PY 2022 IS 7 PB Belgorod State Technological University named after V.G. Shukhov