Effect of Nucleating Agents on the Crystallization and Microstructural Characteristics of Blast Furnace Slag Derived Glass-Ceramics

Materiales vitrocerámicos obtenidos a partir de residuos sólidos tales como cenizas, escorias y vidrio: revisión

“…En algunos casos es necesario implementar agentes nucleantes para favorecer la cristalización en las muestras. Das et al (2012) desarrollaron vitrocerámicas a partir de escoria de alto horno y evaluaron el efecto de tres agentes nucleantes por separado TiO 2 , ZrO 2 , y P 2 O 5 en una proporción del 4 % en peso . Los resultados evidenciaron que la escoria de alto horno se puede convertir en vitrocerámica utilizando agentes nucleantes, siendo la gehlenita la fase cristalina principal detectada en la muestra de vitrocerámica con P 2 O 5 como agente nucleante y sin ningún aditivo (muestra 100 % escoria), mientras que la melilita es la fase cristalina principal en la muestra de vitrocerámica con TiO 2 , ZrO 2.…”

Behavior of Crystallization on a Continuous Solidification Process of Blast Furnace Slag

“…Various analyses of the vitrification and crystallization behaviors of blast furnace slag have been carried out. For example, observation of the crystallization temperature, crystal phase and crystal shape when various additives were added to blast furnace slag was performed by differential thermal analysis, and a kinetic analysis of crystal growth was conducted [6][7][8][9] The activation energy of crystallization of glass was also analyzed by differential scanning calorimetry. [10][11][12][13] The hot thermocouple method is a method for evaluating the crystallization region, and TTT (Time Temperature Transformation) and CCT (Continuous Cooling Transformation) diagrams have been prepared using actual slags for the purpose of effectively utilizing the sensible heat and latent heat of blast furnace slag.…”

Preparation and characterization of glass–ceramic under various sintering atmospheres

“…Much work has been carried out on the production of glass-ceramics based on solid wastes [1,4,9,10]. However, little work has been conducted with regard to the effect of sintering atmosphere, i.e.…”