Energy contribution of coal waste recycled with limestone to produce a Portland clinker

D. Belkheiri; S. Chhaiba

doi:10.3989/mc.2024.376924

Autores/as

D. Belkheiri Preparatory Classes for High Engineering Schools https://orcid.org/0000-0002-2196-5763
S. Chhaiba Instituto de Ciencias de la Construcción Eduardo Torroja IETcc-CSIC https://orcid.org/0000-0003-0856-1358

DOI:

https://doi.org/10.3989/mc.2024.376924

Palabras clave:

Residuos de carbón, Valorización, Clinker, Ganancia de energía, Ecología

Resumen

El análisis ha revelado que los residuos de carbón marroquí consisten en sílice, arcillas y carbón, lo que los convierte en un sustituto viable de la arcilla en la producción de clínker. Nuestro estudio previo demostró que la clinkerización de una mezcla cruda de cemento con un 18.5% de residuos de carbón y piedra caliza produjo un buen clínker de Portland. Este clínker fue similar al obtenido por una mezcla cruda de un cemento Portland. Los residuos de carbón contienen alrededor del 8.8-11.8% de carbón, tienen un valor calorífico de 3.77 MJ/kg y muestran un efecto exotérmico de 67.3 J/g según el análisis DSC. El objetivo de este estudio es estimar la contribución energética de los residuos de carbón en la producción de clínker mediante la comparación de los balances de energía termoquímica durante la clinkerización hasta 1450°C para los dos materiales crudos de clínker, LG y RR; nuestros cálculos indican una ganancia energética de aproximadamente 2.13%.

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