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A SOL-GEL PROCESS FOR PREPARING Th02-U03 SOLS FROM NITRATE SOLUTIONS BY SOLVENT EXTRACTION WITH AMINES

机译：用胺溶剂萃取制备硝酸盐溶液中的sO2-U03溶胶的溶胶 - 凝胶法

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A solvent extraction process using long-chain aliphatic amines was developed and demonstrated, on a laboratory scale, for preparing thoria sols and thorium-uranium oxide sols (containing up to 58 mole ％ uranium) directly from aqueous thorium nitrate—uranyl nitrate solutions. About 80 to 90％ of the nitrate is extracted by contacting the solution for at least 2 min with the amine which is dissolved in an inert diluent. The aqueous phase is then separated from the organic phase and digested at least 10 min at 95 to 100℃. This converts the aqueous phase into a sol and releases additional nitrate which is extracted with the amine in a second stage. The equilibrium nitrate:metal mole ratio decreases linearly with uranium concentration from about 0.28 for pure thoria sols to about 0.16 for thorium-uranium sols containing more than 25 mole ％ uranium.

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John G. Moore;
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年度 1967
页码 1-48
总页数 48
原文格式 PDF
正文语种 eng
中图分类工业技术;
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A SOL-GEL PROCESS FOR PREPARING Th02-U03 SOLS FROM NITRATE SOLUTIONS BY SOLVENT EXTRACTION WITH AMINES

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