Abstract
espanolPara conocer el efecto del tamano de particula de nefelina sienita sobre las propiedades fisicoquimicas de los anillos Raschig ceramicos, este fundente fue molido a diferentes tiempos. Las composiciones se prepararon mediante la mezcla de la arcilla caolinitica illitica y las particulas pre-molidas. Los anillos se obtuvieron en una extrusora de laboratorio y luego fueron sinterizados a 1200 oC. La fiabilidad mecanica de las muestras sinterizadas se describe matematicamente por la teoria de Weibull y el efecto de pre-molienda del fundente en el modulo de Weibull se evaluo midiendo la resistencia a la compresion diametral. El modulo de Weibull y la resistencia fueron los criterios para seleccionar el rango de tamano de particula adecuado de nefelina sienita para la fabricacion de los anillos que se determino estaba entre 53 y 75 μm comprobandose que influye considerablemente en la microestructura de los mismos. La fiabilidad alcanzada fue muy valiosa para la utilizacion de estos anillos como relleno en ldistintos tipos de torres. EnglishIn order to understand the effect of nepheline syenite particle size on physico-chemical properties of ceramic Raschig rings, the fluxing agent was grinded at different milling times. The compositions were prepared by blending the illitic-kaolinitic clay and pre-grinded particles. The rings were shaped by a laboratory extruder and then were sintered at 1200 oC. The mechanical reliability of sintered specimens was mathematically described by Weibull theory and the effect of pre-grinding of fluxing agent on Weibull modulus was evaluated by measuring the diametrical compression strength. Weibull modulus and strength were the criteria for selecting the suitable particle size range of nepheline syenite. It was found that the pre-grinding of nepheline syenite acts as fairly strong parameter on microstructure of rings. The investigation concludes that reliable rings can be fabricated if the particle size of nepheline syenite is arranged between 53 and 75 μm. This enhancement in reliability is valuable in packed towers.
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