A low-grade uranium polymetallic deposit in a volcanic rock in Guangdong province, The ore is sulfated and roasted to obtain the leaching solution, Uranium content of leaching liquid: 45. 66mg/l. Final determination of uranium extraction process conditions: Organic phase: 20％ P204 + 5％ TBP + 75％ kerosene, Compared to: O/A = 1/10, NaF added 15 g/L, time: 3 minutes, temperature: room temperature, The extraction rate was 0. 2 ～ 0. 4 mg/L, and the extraction rate was more than 99％.The extraction rate was high and the extraction efficiency was stable. Uranium reverse extraction process conditions: anti-extractant: 20％ sodium carbonate, compared to: O/A = 5/1, temperature: room temperature, time: 3 minutes, third-level counter-current, The solubility of uranium metal in poor organic phase is 3 ～ 4 mg/L, and the anti-extraction rate is more than 99％, and the anti-extraction rate is higher and the anti-extraction effect is better. The extraction and extraction of uranium extract from uranium extract are good enrichment and separation, which lays a solid foundation for the preparation of ammonium diuranate.%广东某火山岩型低品位铀多金属矿,矿石经硫酸化焙烧得到浸出液,浸出液铀含量: 45. 66mg/L.最终确定铀萃取工艺条件: 有机相: 20％P204 + 5％TBP + 75％煤油,相比: O/A = 1/10,NaF加入量15 g/L,时间: 3min,温度: 室温,三级逆流萃取,萃余液铀含量较低为0. 2～ 0. 4 mg/L,萃取率达到99％以上,萃取率较高、萃取效果稳定;铀反萃取工艺条件: 反萃剂: 20％碳酸钠,相比: O/A = 5/1,温度: 室温,时间: 3min,三级逆流反萃,贫有机相铀金属溶度较低为3 ～ 4 mg/L,反萃率达到99％ 以上,反萃率较高、反萃取效果较好.铀萃原液经萃取、反萃取铀得到较好富集、分离,为下一步制备重铀酸铵产品打下坚实基础.
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