A chelate resin(D814) with amido and phosphoric acid functional group was synthetized by means of the reactions of stytene-divinyl benzene chloromethylated sphere with ethylenedianmine and orth-phosphorous acid and formaldehyde. This resin can be used to adsorb uranium from leaching solution with high chloride ion in the rang of pH 1. 33-9. 05,and the adsorption rate of uranium was above 95%. D814 resin had a good ability resistant to high chloride ion. The loading capacity for uranium was not apparently effected when chlorid ion concentration in solution was 60 g/L. The results of the adsorption experiment show that when the ratio of saturation volume to breakthrough volume was 1. 82, the uranium saturation capacity of D814 was 40. 5 mg/g dry resin. NaCl+NaHCO3 was used for elu-ting agent,and the eluting rate of uranium was 96. 7%. Adsorption uranium mechanism by D814 was also discussed.%苯乙烯-二乙烯苯氯球与乙二胺、亚磷酸、甲醛反应合成了一种带有氨基膦酸螯合基团的大孔树脂(D814),此树脂适用范围宽,能够从pH为1.33～9.05的高氯根浸出液中有效吸附铀,铀吸附率大于94％.树脂耐氯性能好,当原液中ρ(Cl-)达到60 g/L时,对树脂铀的吸附性能仍无明显影响.动态吸附表明,树脂吸附饱和体积与穿透树脂体积之比为1.82,每g干树脂铀吸附饱和容量为40.5 mg.选用NaCl+ NaHCO3混合淋洗剂,铀的淋洗率达到96.7％.对D814树脂的铀吸附机制进行了初步分析.
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