Storchay N. Physical and chemical bases of producing the modified wall ceramics at the lowered temperatures of burning

Subject of inquiry is the process of formation of structure and properties of wall ceramics on the basis of the activated silica-alumina raw materials modified by Na-Fe-containing compounds. Thesis objective is the creation of physical and chemical bases of production of wall ceramics at the lowered roasting temperatures due to modification of the activated silica-alumina raw materials modified by Na-Fe-containing compounds. Research methods: methods of the physical and chemical analysis (X-ray phase, differential and thermal, dilatometry, electronic and microscopic); standard methods of determination of physics mechanical properties of the received materials; mathematical methods of planning of experiment and processing of results. Theoretical and practical results: consistent patterns of creation of composite wall ceramics due to modification of the natural and technogenic activated silica-alumina raw materials of Na-Fe-containing compounds are determined. Novelty of the research: consistent patterns of dispergating of part of silica-alumina raw materials; it is revealed that modification the silica-alumina of systems by silt containing surfactant in the structure promotes an intensification of process of drying; consistent patterns of change of durability and average density depending on a ratio and a type of input products are determined. Implementation extent: results of trial introduction in the conditions of "Novooleksandrivskyi brick works". Range of application: production of wall ceramics for industrial and civil engineering.