关键词: 湿法磷酸, 碘, 回收利用

Abstract: With the aggravation of phosphate ore dilution，comprehensive utilization of low grade phosphate ore associated with a variety of valuable elements is paid more and more attention.The content of iodine in Yunnan phosphate ore is generally higher.Recovery of iodine from phosphate ore can be treated as one of the effective ways to solve the needs of iodine in China.There are many methods for recycling iodine resources.In allusion to different raw materials，several important iodine recycling methods were briefly discussed.Combining with the existing industrial production technology，recycling pathways of iodine from the wet-process phosphoric，including‘recovery of iodine from dilute phosphoric acid with air blowing technology’ and ‘recovery of iodine from fluosilicic acid with oxidation-extraction and ion exchange method’were mainly introduced.

Key words: wet-process phosphoric acid, iodine, recycling