磷资源加工研究进展:1.高硅低品位磷矿的湿法浸取流程  

Research progress on processing for phosphorus resource:1.Wet-process extraction of low grade phosphate rock with high silicon content

作　　者：刘代俊[1] 江成发[1] 余静[1] 杨军[1] 徐程浩[1] 陈伟[1] 

机构地区：[1]四川大学化工学院四川省磷化学与工程重点实验室,四川成都610065

出　　处：《磷肥与复肥》2008年第5期11-13,共3页Phosphate & Compound Fertilizer

摘　　要：针对磷矿资源贫化的问题,介绍了高硅低品位磷矿湿法浸取的新型二水工艺(CWP)及其中的逆流萃取强化过程,对工业化前景和效益进行了初步分析。研究中用16%P2O5的矿可以获得22%P2O5的磷酸,并可获得高质量的副产品磷石膏,显示了较好的应用前景。In view of the problem of depleting and diluting of phosphorus resource, a new dihydrate cycling wet-process （CWP） by using low grade phosphate rock with high silicon content, and enhancement extraction of counter-flow are introduced. The industrialization and economic benefit regarding with the process are also analyzed simply. The research results show that the phosphoric acid with 22% P2O5 and phosphogypsum with high quality as a by-product can be obtained by treating with phosphate rock with 16% P2O5. The new process displays a good utilization prospect.

关 键 词：高硅低品位磷矿资源 磷酸 湿法浸取 综合利用 

分 类 号：TQ126.3[化学工程—无机化工]