The kinetics of pore formation processes in pressed products of the system cullet? Clay? colemanite, fired at different heating rates. It has been established that moderate heating rates (2.5-3 & # 176; C / min) bring the processes occurring during firing closer to equilibrium and provide, already at 680 & # 176; C, the production of glass-crystalline materials with a uniform fine-pored structure and satisfactory properties and make it possible to maintain shape of products
The conditions for obtaining and the regularities of changing the color parameters of ceramic pigments in the system CaO-MgO-Al 2 O 3 -SiO 2 -Cr 2 O 3 . The main phase of such pigments is chrome garnet, which is formed with the direct participation of blast-furnace slag minerals. It has been shown that with an increase in the acidity of pigment mixtures by equimolecular replacement of free silicon dioxide in their composition with phosphorus (V) oxide, the purity and intensity of the green color of uvarovite pigments increase, and their firing temperature also decreases to 1100 ... 1150 & # 176; С
The possibility of producing expanded clay gravel based on clay from the Bainovskoye deposit is considered. Compositions and main technological parameters of expanded clay production with the required physical and mechanical properties have been developed
