Оптимизация технологических параметров получения облицовочных керамических материалов на базе кальций-силикатного техногенного сырья

Directed synthesis of crystalline mineral phases in the stage of crystallization structures is promising for obtaining products with minimal firing shrinkage and. To create a low shrinkage and high strength structures is preferable to use natural or synthetic wollastonite CaO SiO2, and its synthesis at the stage of firing mainly CaO and SiO2. The main influence on the yield of wollastonite have a molar ratio of CaO/SiO2, the dispersion of the raw materials, the temperature and duration of isothermal holding, and the manner and molding pressure. For the direct synthesis of wollastonite as a promising material investigated nepheline sludge generated during the extraction of alumina from nepheline rocks. In the optimal ratio between the maximum intensity provided CaO/SiO2 wollastonite crystallization peak intensity for d/n = 0,297; 0,383; 0,352 nm. The optimum area CaO/SiO2 ratio corresponds to the molecular composition of the charge, providing the necessary properties of the ceramic crock.