Mishnyova Y. Pressed thermal shock redistant and vibrocast chromic oxide refractories from fine-dispersed mixes for glass fibre making furnaces

The subject of investigation - structure- and phase formation processes in pressed chromic oxide refractories, providing density and thermal shock resistance increase, technological vibrocast processes of chromic oxide refractories; the purpose of the investigation - development of scientific foundations and technological parameters of non-waste production from fine-dispersed masses of compact pressed large-dimension chromic oxide refractories with increased thermal shock resistance and vibrocast large-dimension chromic oxide products with thickness of more than 75 mm for glass fiber furnaces; the methods of research - chemical, petrographic, roentgen phase, electron-microscopic methods, standard properties investigation methods of raw material, masses and refractories; theoretical and practical results - scientific foundations and technological parameters of non-waste production from fine-dispersed masses of compact pressed thermal shock resistance chromic oxide refractories and vibrocast large-dimension chromic oxide products with thickness of more than 75 mm; novelty - an charge granulometric composition influence on increasing of chromic oxide refractories dense while combined application of metallurgical chromic oxide, ТіО2, cuttings and defective products and pulp from mechanical treatment of their products is established, an influence of monoclinic ZrO2 or zircon concentrate additions on phase- and structure-creation into chromic oxide refractories and increasing of their thermal shock resistance is determined, vibrocasting and drying chromic oxide refractories parameters are established; introduction extent - developed technological parameters for chromic oxide refractories production are introduced in Ukraine in OJSC "The Ukrainian Research Institute of Refractories named after A.S. Berezhnoy", where products trial lots output is realized; application field - linings of glass furnaces for glass fiber production from "E" glass.