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Rev. LatinAm. Metal. Mat. 2021, 41(2): 139-148

FABRICACIÓN DE LADRILLO DE ARCILLA COCIDA CON RELAVES DE HIERRO Y ESCORIA DE ACERO

Suzy Magaly Alves Cabral de Freitas, Leila Nobrega Sousa, Tamires Estevam, Máximo Martins, Paulo Santos Assis

Online: 09-09-2021

GA-1058

Abstract


Ha habido una creciente preocupación ambiental y económica sobre el destino final de los residuos industriales. Este artículo tiene como objetivo evaluar el efecto de incorporar relaves de mineral de hierro (IOT) y escoria de acero en ladrillos de cerámica roja. El procedimiento para producir los ladrillos cocidos incluye formar los ladrillos comprimiéndolos en un molde bajo una presión especificada y calcinación (950 °C). En este estudio, se investiga la influencia de la alta sustitución (50%) de arcilla con escoria IOT y BOF utilizando resistencia a la flexión y microscopio electrónico de barrido (SEM). A la masa de arcilla se le agregaron diferentes proporciones de residuos, siendo: 25% de escoria y 25% de relaves en T25.I25; 50% de escoria y 0% de relaves en T50.I0; 0% de escoria y 50% de relaves en T0.I50; 35% de escoria y 15% de relaves en T35.I15; y, 15% de escoria y 35% de relave en T15.I35. Los resultados muestran que las escorias BOF y relaves IOT pueden usarse juntas para producir ladrillos de arcilla cocida con una sustitución de alto nivel, sin embargo, se requieren algunos ajustes dependiendo de la aplicación final. Este estudio contribuye a la valorización de los residuos, contribuyendo a la planificación y gestión de residuos basados en principios de sostenibilidad y con el objetivo de reducir las emisiones de gases de efecto invernadero.


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