Change of Formation Yield and Characterization of PCC Particle Synthesized with Impurity Ions Contents by Carbonation Process

摘要

The effect of the impurity ions Al~(3+), Fe~(3+) and Mg~(2+) on the formation yield and crystal properties of precipitated calcium carbonate(PCC) produced by the carbonation process was investigated in Ca(OH)_2-H_2O-CO_2 system. The effect of the impurity ions Al~(3+), Fe~(3+) and Mg~(2+) on the formation yield using particle size distribution and morphology of PCC were discussed. The particle size distribution of PCC was increased with increase of impurity ions. The morphology was transformed in order of spheroidal, scalenohedral, rhombohedral calcite for Al~(3+), Fe~(3+) and rhombo-spheroidal, spherical, scalenohedral for Mg~(2+) with increase of impurity ions.