Przemysl Chemiczny, Vol.89, No.10, 1357-1360, 2010
Precipitation of calcium carbonate from post-distillation liquor and post-filtration liquid from Solvay process in the presence of CaCO3 crystals
CaCO3 was pptd. from waste solns. delivered in Solvay process for prodn. of NaOH at 293-323 K under stirring 500 rpm for 2-30 mm in presence of CaCO3 nucleation. The product showed high purity and high apparent d. (up to 1379 g/L).