METHOD OF PROCESSING NATURAL URANIUM CHEMICAL CONCENTRATE Russian patent published in 2012 - IPC C22B60/02 C22B3/06 C22B3/20 

FIELD: process engineering.

SUBSTANCE: invention relates to processing natural uranium chemical concentrate. Proposed method comprises concentrate leaching by nitric acid solution to obtain suspension, adding coagulant into suspension and suspension separation. Clarified solution is separated from residue and directed to extraction. Note here that polyacrylamide-based anion coagulant is used and suspension with said coagulant is subjected to permanent magnetic field effects. Coagulant concentration and duration of magnetic field effects are selected to ensure concentration of insoluble residue now exceeding 100 mg/l in clarified solution. In extraction from clarified solution, no antifloating emulsions are observed.

EFFECT: solution suitable for further extraction.

3 cl, 2 tbl