磷石膏悬浮煅烧工艺研究

Study on suspension calcining process of phosphogypsum

介绍了磷石膏的杂质类型及其影响,并对磷石膏的除杂方法进行了分类和探讨。分析了传统的磷石膏煅烧工艺及其存在的问题,根据高品质磷石膏的要求,改进除杂及煅烧方法,提出了一种新型的磷石膏悬浮煅烧处理工艺。该工艺集磷石膏的烘干、除杂、煅烧、冷却于一体,热效利用率高,净化效果好,且便于实现自动化。

The impurity types of phosphogypsum and their effects are introduced.The impurity removing methods for phosphogypsum are classified and discussed as well.The traditional calcination process of phosphogypsum and its existing problems are analyzed. According to the requirements on high quality phosphogypsum,a new kind of phosphogypsum suspension calcining process is put forward to improve the impurity removing and calcination methods. This new process integrates drying,impurity removing,calcination and cooling.It exhibits a high utilization rate of thermal effect and a good purification effect,and is easy to realize automation.