2.1.3. Mine Tailings (MT)

In this study mine tailings from barite mine were collected and subjected to calcination to remove water, organic matter and to improve reactivity. The parameters of the calcination process were the same as those used for the kaolin calcination. However, according to the oxide chemical composition analysis, the MT used in this study exhibit a high content of Fe oxides and a much lower content of SiO2 and Al2O3 than CA or MK. The mine tailings used in the study had a particle size distribution of 46 μm (d50), a specific surface area of 0.33 m2/g and a bulk density of 2.83 ± 0.01 g/cm3.
