TY JOUR TI Study of the effect of impurity compounds on phase formation in the synthesis of calcium-aluminoferrite clinker KW calcium-aluminoferrite clinker KW calcium monoaluminate KW calcium aluminoferrite KW gelenite KW minor phases KW impurity compounds JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Novosyolov, A.G. AU Nikitina, M.A. AU Dreer, Y.I. AU Tarallo, Z.V. AU Manuilov, V.E. PY 2025 IS 10 PB Belgorod State Technological University named after V.G. Shukhov