Batch settling of slurries of praseodymium of oxalate in water

Abstract

Scope and ContentsS 1. A log-log plot of cettling rates vs. real voidage suggests that slurries of praseodymium oxalate show three distinct types of settling: hindered, transitional and compaction* 2. The two principal variables are local solids concentration and floc structure. VJhen the latter is constant or a function of the former, Kynch’s theory holds except fo;* the packed bed. J. i.ith u detector properly shielded from a radioactive slurry, the counting rate is a transform of the colids concentration. When the rate function is specified, the concentration is uniquely determined except where it is discontinuous. 4* Comparison of counting rates calculated by the application of Hynch’s theory with oxporimertal rates indicates that a concentration gradient exists in the final packed bod.