Formation and characterization of dispersive Mg substituted CaCO3

Dispersive Mg substituted CaCO3 particles were synthesized via the modified carbonation method in which MgCl2 was added into the Ca(OH)2 suspension. The influence of MgCl2 on the morphology, dispersion, composition and structure of the carbonation product was investigated. The experimental results indicated that the addition of MgCl2 in the slaking step converted the agglomerated Ca(OH)2 to the dispersive slurry containing Mg(OH)2 and CaCl2, the carbonation of the resulting slurry led to the formation of the dispersive Mg substituted CaCO3.