磷石膏净化及石膏煅烧工艺综述  

Process Introduction for Phosphogypsum Purification and Gypsum Calcination

作　　者：马行美 

机构地区：[1]陕西华山化工集团有限公司,陕西华县714100

出　　处：《硫磷设计与粉体工程》2003年第5期17-19,共3页Sulphur Phosphorus & Bulk Materials Handling Related Engineering

摘　　要：湿法磷酸生产副产的磷石膏数量大 ,对环境污染较严重 ,综合利用前均须进行处理。介绍了化学石膏主要品种的特性 ,杂质对石膏制品的影响 ,以及杂质在磷石膏粒度分布中的范围 ,综述了磷石膏净化及石膏煅烧工艺 ,认为慢烧工艺和速烧工艺各有优缺点 。The wet phosphoric acid plant features large amount of by product phosphogypsum, which poses significant pollution to the environment and must be treated before comprehensive utilization. The characteristics of main types of chemical gypsums, the impact of impurities on the gypsum products, as well as the impurity's grain size distribution in the phosphogypsum is introduced. The phosphogypsum purification and gypsum calcinations processes are introduced and it is concluded that the slow calcinations and quick calcinations have their respective advantages and disadvantages, and the calcinated building gypsum powder will meet quality requirements for gypsum products.

关 键 词：磷石膏 净化 石膏 煅烧工艺 

分 类 号：TQ177.3[化学工程—硅酸盐工业]