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- W2896602236 abstract "The main objective of this study is to evaluate the use of different wastes as a raw material in the fabrication of insulation refractory. These wastes are fly ash, rice husk (RH), rice husk ash (RHA) and fired refractory grog. Various samples are prepared with different compositions based upon partial and fully replacement of clay by FA. Rice husk is used as an additive to produce the pores in the matrix. The specimens are prepared by semi dry process and sintering is performed at 800–1000 °C in air atmosphere. Numerous physical, mechanical and thermal characterizations like apparent porosity (AP), bulk density (BD), cold crushing strength (CCS), linear shrinkages, X-ray diffraction (XRD), scanning electron microscope (SEM) and thermal conductivity measurements of fired samples are done. The results show that the use of waste materials decreases the thermal conductivity and bulk density of the insulation refractory. Cold crushing strength of the 100 wt.% waste materials sample is around 15 MPa. This promising characteristic suggests that these wastes materials may lead to be used as a potential material for the preparation of insulation refractories. The use of waste materials may be economically attractive and technically feasible. El objetivo principal de este artículo es evaluar el uso de diferentes residuos como materia prima en la fabricación de aislantes refractarios. Estos desechos son cenizas volátiles, cascarilla de arroz (rice husk [RH]), cenizas de cascarilla de arroz (rice husk ash [RHA]) y grog refractario cocido. Se prepararon varias muestras con diferentes composiciones basadas en la sustitución parcial y total de arcilla por cenizas volátiles. La cascarilla de arroz se usó como un aditivo para producir poros en la matriz. Las muestras se prepararon mediante un proceso semiseco y la sinterización se realizó a una temperatura de 800 a 1.000 °C en atmósfera de aire. Se realizaron numerosas caracterizaciones físicas, mecánicas y térmicas, como porosidad aparente (apparent porosity [AP]), densidad aparente (bulk density [BD]), resistencia al aplastamiento en frío (cold crushing strength [CCS]), contracciones lineales, difracción de rayos X (X-ray diffraction [XRD]), microscopio electrónico de barrido (scanning electron microscope [SEM]) y mediciones de conductividad térmica de las muestras cocidas. Los resultados muestran que el uso de materiales de desecho reduce la conductividad térmica y la densidad aparente del aislante refractario. La resistencia al aplastamiento en frío de la muestra de materiales de desecho al 100% en peso es de unos 15 MPa. Esta prometedora característica sugiere que estos materiales de desecho podrían utilizarse como material potencial para la preparación de aislantes refractarios. El uso de materiales de desecho puede ser económicamente atractivo y técnicamente factible." @default.
- W2896602236 created "2018-10-26" @default.
- W2896602236 creator A5004776188 @default.
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- W2896602236 date "2019-05-01" @default.
- W2896602236 modified "2023-09-30" @default.
- W2896602236 title "Fabrication of sustainable insulation refractory: Utilization of different wastes" @default.
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- W2896602236 doi "https://doi.org/10.1016/j.bsecv.2018.09.002" @default.
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