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USING SEM FOR COMPARING TRENDS TO FORM CENOSPHERES IN SPRAY DRYING PROCESSES
Cenosphere formation is a current phenomenon when spray drying suspensions. An impervious crust is formed as the surface of sprayed droplets is dried by the hot gas, and the residual water inside the droplet is overheated, and breaks part of the…
Development of Iron Oxide-Rich Frits and Glazes for Application on Ceramic Tiles
In this study, different frit compositions were prepared in the SiO2–CaO–Fe2O3 system. The amounts of Fe2O3 were varied between 10 mass-% and 40 mass-%. The frits were melted and characterized using several different techniques in order…
Effect of Fluxing Additives in Iron-rich Frits and Glazes in the Fe2O3–SiO2–CaO–Al2O3 System
Glasses in the Fe2O3–SiO2–CaO system are potential candidates for many technological applications due to their ferrimagnetic and semiconductive properties, which have been extensively studied; in this sense, the effect of adding different…
SMOOTHING IRON OXIDE-BASED GLASS PARTICLES WITH AN OXYACETYLENIC FLAME
Milled particles from a (SiO2-CaO-Fe2O3) glass were smoothed by flame spraying, focusing on the elimination of superficial roughness or angularity without reaching complete fusion of the glass. The purpose of this study is the further application to…
Optimización de la preparación de barbotina en plantas de baldosas
Cuando el objetivo de una empresa cerámica es alcanzar una mayor producción, sin invertir en nuevos equipos, su principal preocupación es la optimización del rendimiento de producción de la maquinaria disponible. En…
Caracterización y reducción del“sucio de pared” en la atomización-secado de suspensiones arcillosas
El efecto llamado “sucio de pared” consiste en la acumulación de gotas de suspensión, en general parcialmente secadas en vuelo, sobre las paredes internas del atomizador. A nivel industrial, este efecto suele alterar la…
Particles Spreading Phenomena in the Case of Glass Thermal Spraying
The spreading phenomena of particles during thermal spraying are quite difficult to observe given the kinetics of the process. In this work, the splat formation of glass and alumina is theoretically compared, showing that glass transition and…
Cavitation-erosion of 3Y-TZPs obtained at different sintering
temperatures
The cavitation-erosion resistance of tetragonal zirconia polycrystals with 3 mol% Y2O3 (3Y-TZPs) has been studied in specimens sintered in the temperature range from 1500 to 1590 ºC. The study presents mass loss measurements after exposure to…
Colour matching in decorative thermally sprayed glass coatings
Coloured coatings were obtained on steel by plasma spraying without severe in-flight alteration of pigments, taking profit of the low thermal conductivity of the glassy matrix of glaze particles. Colour matching was studied by mixing 3 different…
RELEVANCIA DEL FACTOR “MATERIA PRIMA” EN UN PROCESO CERAMICO INDUSTRIAL: UN CASO DE ESTUDIO VENEZOLANO
Frente a los problemas de calidad experimentados en producción por muchas empresas cerámicas venezolanas, una de las respuestas consiste en realizar, en los diversos sectores de las minas proveedoras, un análisis no solamente de…