Abstract
The conditions for preparing ThO2-UO3 sol by using the gaseous ammonia addition method are studied. Dependences of colloid particle size and colloid fraction of sol on U content, (Th+U) concentration and ammonia addition mode are observed, and the conditions for preparing sols suitable for gelation in CCl4-ammonia media are found in the range of 1.0∼1.3 mol (Th+U)/l and U content of 0-30%. Using the resultant sols, the effect of sol concentration on gelation behaviors such as sphericity and cracking is clarified.
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