约旦磷矿二水—半水物法制取湿法磷酸工艺研究  

Study on Dihydrate-hemihydrate Process Phosphoric Acid from Jordanian Phosphate Rock

作　　者：田员圆 石笑天 徐旭 胡宏 TIAN Yuan-yuan;SHI Xiao-tian;XU Xu;HU Hong(Guizhou Zunyi Industrial Development Co.,Ltd.,State Power Investment Group,Zunyi 563000,China;Gansu Wengfu Chemical Co.,Ltd.,Guizhou 563000,China)

机构地区：[1]国家电投集团贵州遵义产业发展有限公司,贵州遵义563000 [2]甘肃瓮福化工有限责任公司,甘肃金昌737202

出　　处：《硫磷设计与粉体工程》2024年第4期8-11,I0001,共5页Sulphur Phosphorus & Bulk Materials Handling Related Engineering

摘　　要：采用二水—半水物湿法磷酸工艺可直接生产较高浓度的磷酸,具有良好的节能效果,且副产的半水石膏品质较好。试验以约旦磷矿为原料,采用二水—半水物法制取湿法磷酸,分别考察了不同工艺条件对二水物流程和半水物流程的影响,获得最佳工艺条件,以制取较高浓度的成品磷酸和较好品质的半水石膏,提高P 2 O 5回收率。The dihydrate-hemihydrate phosphoric acid process can directly produce phosphoric acid with higher concentration,which is good energy-efficient,and the by-product hemihydrate gypsum comes with better quality.The test uses Jordanian phosphate rock as raw material and employs the dihydrate-hemihydrate process to produce wet-process phosphoric acid.The effects of different process conditions on the dihydrate process and the hemihydrate process are investigated,respectively,and the optimal process conditions are obtained to produce higher concentration of finished phosphoric acid and better quality hemihydrate gypsum,and improve the P 2 O 5 recovery rate.

关 键 词：湿法磷酸 二水—半水法 再结晶流程 约旦磷矿 

分 类 号：TQ126.35[化学工程—无机化工]