摘要
研究了P204萃取钒过程中对铀的萃取及回收。试验结果表明:萃取钒时,铀的萃取率大于88%,硫酸反萃取钒时,低于17%的铀被反萃取;萃取剂每循环使用1次,铀在有机相中累积约50mg/L;采用200g/L ANPH溶液对贫有机相进行再生,再生效率大于75%,再生产生的沉淀物经碳酸钠溶解、沉淀铀后可制得重铀酸钠。
Extraction and recovery of uranium in vanadium extraction process by P204 were investiga- ted. Experimental results show that co-extraction rate of uranium is over 88% in the vanadium extrac- tion process; when vanadium is stripped by sulfuric acid, uranium is stripped less 17%; when extract- ant is recycled one time, accumulation of uranium into the organic phase is about 50 mg/L. Regenera- tion efficiency can reach above 75 % when treated unloaded organic phase with 200 g/L ANPH solu- tion. Uranium in the sediment of regeneration is dissolved by sodium carbonate leaching, the dissolved solution is precipitate with sodium hydroxide to produce sodium diuranate.
出处
《铀矿冶》
CAS
2015年第2期107-110,116,共5页
Uranium Mining and Metallurgy
关键词
P204
萃取
钒
铀
再生
P204
extraction
vanadium
uranium
regeneration
