二水物湿法磷酸中碘离子氧化工艺研究  

Study on Iodine Ion Oxidation Process in Dihydrate Wet-process Phosphoric Acid Plant

作　　者：吴有丽 王绍江 项双龙 石锦霞 

机构地区：[1]贵州开磷息烽合成氨有限责任公司,贵州贵阳551109 [2]贵阳单宁科技有限公司,贵州贵阳550299 [3]贵阳开磷化肥有限公司,贵州贵阳551109

出　　处：《硫磷设计与粉体工程》2017年第5期28-30,共3页Sulphur Phosphorus & Bulk Materials Handling Related Engineering

摘　　要：采用氧化剂将二水物湿法磷酸中的碘离子氧化成碘分子,以便于磷矿伴生碘资源的富集回收。湿法磷酸中碘离子氧化最佳工艺条件为:以H_2O_2作为氧化剂,加入w(H_2O_2)=30%的双氧水φ(H_2O_2)=0.15%,反应温度为75℃,反应时间为20 min,磷酸中碘离子的氧化率为98.62%。Iodine ions in dihydrate wet-process phosphoric acid is oxidized into iodine molecules using oxidant to facilitate enrichment and recovery of iodine resource in the phosphate rock.Optimum process conditions for oxidation of iodine ions in the wet-process phosphoric acid:use H_2O_2as oxidant,added w(H_2O_2)=30% hydrogen peroxide volume percentage is 0.15%,reaction temperature is 75℃,reaction time is 20 min,oxidation ratio of iodine ion in phosphoric acid is 98.62%.

关 键 词：磷矿 湿法磷酸 碘离子 双氧水 氧化 

分 类 号：TQ126.35[化学工程—无机化工]