从含碘磷矿石中萃取碘的方法(CN101638220A)其特征包括:a.直接在磷酸输送管线上加入氯气或四氯化碳或双氧水中的一种配成的氧化剂;b.稀磷酸采用直接上塔方式进入萃取塔;c.萃取气采用切向进气方式,使稀酸产生旋流;d.选择鼓泡式筛板,使萃取气和稀酸充分接触,萃取稀磷酸中的碘分子 Method for extracting iodine from iodine-bearing phosphate rock (CN101638220A), which comprises the following steps: a. Directly adding a mixed oxidant such as chlorine gas or carbon tetrachloride or hydrogen peroxide solution into a phosphoric acid feeding pipeline; b. On the tower into the extraction tower; c extraction gas using tangential gas intake, so that the production of swirling dilute acid; d select bubble plate, the extraction gas and dilute acid full access to extract the dilute phosphoric acid iodine molecules