Physical-chemical properties of ceramic mix using Nizhneuvel’skoe clay

The results of replacing Ukrainian clayey raw material with Nizhneuvel’skoe clay (Russia) in ceramic mix are presented. The physical-chemical properties of the mix developed are determined. Ceramic articles were obtained with sintering temperature 1070°C with water absorption no more than 3% and total lineal shrinkage less than 13%. Most ceramic producers in Russia use high-quality clays, which are expensive, from deposits in Ukraine. Thus the question of replacing such clays with clays from deposits in Russia in the mixes used for manufacturing ceramic articles is important. Technological studies of the possibility of replacing in ceramic mix the “Vesko-Prima” clay from the Veselovskoe deposit in Ukraine by Nizhneuvel’skoe clay from Chelyabinsk Oblast’ have been performed. The “Keramika” JSC (in Glazov) uses for the production of ceramic articles with a relatively complicated shape a mix consisting of “VeskoPrima” clay (27.2% 3 ), Sholokovskoe clay from a deposit in Udmurtia (47.4%), nepheline-syenite (13.2%), quartz sand (8.4%), and cullet (3.8%).