TY JOUR TI Technological features of the use of glass in the manufacture of glass materials KW glass materials KW cullet KW energy and resource saving KW heterogeneity KW impurities KW beneficiation KW glass-making JO Technique and technology of silicates AU Min’ko, N.I. AU Dobrinskaya, O.A. PY 2019 IS 26 PB Individual Entrepreneur Svetlana Vasilievna Samchenko