碳酸钙沉淀诱导期影响因素的研究

Research on the Effect of operating conditions on the induction period of CaCO_3

研究了不同初始浓度、温度、pH值以及杂质Mg2+等因素对CaCO3沉淀结晶过程诱导期的影响。研究结果表明,成核诱导期随着初始浓度、温度、pH值的增加而降低,溶液中Mg2+的存在可以延长诱导期。

In this article the effect of several operating conditions, including initial reagent concentration, temperature, pH, and the presence of impurity Mg^2＋ on the induction period of CaCO2 were studied experimentally by a conductivity method. The results show that the induction period of CaCO2 decreases with an increase in initial reagent concentration, temperature and pH of solution. The presence of impurity Mg^2＋ can prolong the induction period.