The object of study: the processes of directed formation of phase composition and structure of high strength aluminochromite refractory cements and concretes in the multi-component system (Mg, Ca, Sr, Ba)O-Al2O3-Cr2O3. Objective: the creation of the theoretical foundations and the development of technology of refractory unshaped materials with high strength, refractoriness and resistance to aggressive media on the base of aluminates and chromites of alkaline earth elements. Research Methods and apparatus: thermodynamic, geometrical, topological, X-ray diffraction, differential thermal, infrared spectroscopy, petrographic and electron microscopy. Physical, mechanical and technical properties were determined in accordance with international standards. The experimental data were processed by performed using the methods of mathematical statistics. Theoretical and practical results: the scientific postulates were developed and experimental data concerning development of the compositions creation of aluminochromite cements technology with using chemical industries waste, as well as high-strength, refractory concretes which are characterized by high performance, were obtained. The technical manuals for productions of pilot experimental batches aluminochromite cements were developed. Novelty: theoretical foundations of refractory unshaped materials obtaining on the base of aluminates and chromites of alkaline earth elements were created. Given foundations are based on the determination of physical and chemical regularities of phase equilibria evolution in the subsolidus structure of multi-component system (Mg, Ca, Sr, Ba)O-Al2O3-Cr2O3. Degree of integration: developed unshaped materials have been approved as lining in high-temperature units of the Kharkiv National University named after V.N. Karazin, LLC RPE "Zorya" (Rubizhne, Luhansk region), RPE "DOMINANTA" (Konstantinovka, Donetsk region), RPE "TEPLOREMSTROY" (Kharkov). Theoretical results have been incorporated in the practice of educational process of department "Technology of ceramics, refractories, glass and enamels" NTU "KhPI" for training of students of specialty 05130104 - "Chemical technology of refractory non-metal and silicate materials". Application: developed technology can be applied in plants of the cement industry without involving heavy investments, and concretes - in the metallurgical and chemical plants as lining of heat-released areas of high-temperature plant items; obtained theoretical regularities can be used in the fundamental researches of multi-component oxide systems, at the development of principles for creating of newest refractory nonmetallic materials of initial phase composition; research results are recommended for using in high schools at the training of specialists in technology of refractory non-metal and silicate materials.
