摘要
本文通过等温法研究了无水硫酸钙在 NaCl 水溶液中的水合动力学,研究的温度为15℃、20℃和30℃,NaCl 浓度范围为5～20%(质量百分数),结果发现当氯化钠浓度一定时,随着温度的升高,无水硫酸钙的水合速度减慢;当温度一定,氯化钠浓度为10%时,无水硫酸钙的水合速度最快。当氯化钠浓度超过10%时,水合速度随着氯化钠浓度的升高而减慢。通过计算机分别对三个温度下的实验数据加以拟合得到了数字模型,实验值与计算值的平均误差为<±10%,模型的精度比较高。
The hydration kinetics of anhydrite in sodium chloride solutions from 5% to 20%(mass per cent)have been studied at 15℃,20℃ and 30℃.It is found that the higher the temperture the slower the rate of hydration reaction when Nacl concentration is fixed.The reaction reaches its maximum rate when Nacl cocentration is 10%,When Nacl concentration is higher than 10%,the reaction rate derease as Nacl concentration increase. The kinetics models Which correlate conversion rate of anhydrite transforming into dihydrite and Nacl concentration and time have been developed at certain temperatures,The mean relative error is smaller than 10%
