离子交换法与还原沉淀法去除氢氧化钴中铀的试验研究

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中图分类号：X591 文献标志码：A 文章编号：2095-2945（2025）31-0043-04

Abstract：Experimentalresearchonuraniumremoval fromcobalt hydroxidewasconductedusingcobalt hydroxidewitha uranium content of 00mg/kg as the raw material. The results showed that the uranium removal rate was 95.9% and the uranium residue was 8.2mg/kg under the condition of single-stage adsorption（flow rate 4mL/min and height diameter ratio 8.2：1），whichwassignificantlylowerthanthestandardlimit.Theuranium-containingcobalthydroxidewastreatedbyzerovalent iron Reduction-Precipitation Method，and the uranium removal rate was 82.3% and the residual amount was 35.4mg/kg under the conditions of pH=2 and 24h of reaction，which could meet the requirements of uranium removal. In conclusion，the Ion ExchangeMethodisconsideredtobetheoptimaltechnicalsolutionforuraniumremovalofcobalthydroxide，andhasthe potential forindustrialpromotion.Reduction-Precipitation Methodcanbeusedasanadjuncttospecificacidicconditions.

Keywords：ionexchange method; reduction-precipitation method;cobalt hydroxide;uranium;exprerimental materials化钻产品放射性低于限制值的工业化应用技术，为此开展了氢氧化钴中铀的离子交换法和还原沉淀法去除试验研究，以便为氢氧化钴湿法生产企业铀放射性超标问题提供一种解决路径。（剩余5221字）