Zaychuk A. Porous glass-crystalline materials based on natural and recycled row materials

The thesis for the degree of doctor of technical sciences, specialty 05.17.11 - technology of refractory nonmetallic materials. - State Higher Educational Institution "Ukrainian State University of Chemical Technology", Dnipropetrovsk, 2014. The thesis is devoted to the development of scientific bases of technology slag containing ceramic pigments wide range of colors with a specifying mineralogical composition and high operational parameters. It was theoretically proved and experimentally implemented fundamental possibility of structure-directed synthesis diopside lilacs, greens uvarovite and pinks malayait pigments according to the systems СоО - CaO - MgO - Al2O3 - SiO2, CaO - MgO - Al2O3 - SiO2 - Cr2O3 and CaO - MgO - Al2O3 - SiO2 - - SnO2 - Cr2O3. The basic technological parameters (content of coloring components and mineralizing additive, firing temperature) and their impact on the performance properties of pigments. Scientific foundations of obtain low-temperature (firing temperature 1150-1200°С) spinel-type pigments of blue-green number in the CoO - MgO - CaO - Al2O3 - TiO2 and CoO - Cr2O3 - MgO - CaO - Al2O3 - TiO2 using slag aluminothermal production of ferrotitanium have been developed. The dependence of properties of their pigments crystal phase composition have been determined. The basic technological parameters of receipt and their influence on color indicators and mineralogical composition of the ceramic pigments brownish-black number from open hearth slag was proved. It is proved that the most effective components for the white color component оf gray pigments are compounds of zirconium (ZrO2 і ZrSiO4), which are characterized by inertia during high-temperature synthesis in relation to various oxides of metals of variable valence used in their composition, and high resistance to solvent action of glass melt.