结晶降温转化试验

Crystallization Cooling Conversion Test

目前,硫酸钾生产工艺中结晶工序的控制温度在40℃~44℃,该方法试图通过改变反应加水量、反应时间来降低反应温度。实验结果表明:充足的转化时间(4 h),温度的变化对转化产物的质量、产率、钾收率影响不明显;提高混合钾的钾硫比以及加水量,有助于提高试验转化产物的质量。当混合钾和淡水的比例为1∶1时,30℃~41℃转化出的产物K^+、SO4^2-均可达到优级品指标。研究结果对实际生产中的工艺优化、产品控制具有一定的指导意义。

At present,the control temperature of the crystallization process in the potassium sulfate production process is 40℃~44℃.This method attempts to reduce the reaction temperature by changing the reaction water volume and reaction time.The experimental results showed that:sufficient conversion time(4 h),the temperature change has no obvious effect on the quality,yield,and potassium yield of the transformation product;To improve the potassium sulfur ratio and increase the amount of water added to the potassium mixture will help to improve the quality of the test transformation product.When the ratio of mixed potassium to fresh water is 1∶1,the products K^+and SO4^2-converted at 30℃~41℃can achieve the excellent grade index.The research results have certain guiding significance for the process optimization and product control in actual production.