Abstract
As the results of the heating study, it was found that large-size crystals are obtained at high production rate, by the reduction of circulating feed rate to evaporator and the increase in circulating feed rate to crystallizer. Under fixed feed rates, the effective nucleation rate showed a minimum at a particular production rate, suggesting that clusters (precursor of nucleus) are generated during the dissolution of fine crystals in evaporator and that the clusters, as well as secondary nuclei, are easily incorporated into growing crystals in crystallizer.
