A proposal for reducing F and Cl emission in the brick industry using new formulations

Abstract Emissions of F and Cl by the brick and tile industry of Bailen (Jaen, Spain) can be reduced by preparing mixtures of the three clays traditionally used in that area (white, and blonde Tertiary loams and Triassic red loam), which F content ranges between 850 and 1200 ppm, with an Al-rich clay of low F content ( 30% because its higher F initial content and its lower proportion of carbonate produce higher emissions. For Cl, the initial content is very low (