Process of zirconium decontamination for recovering uranium and molybdenum contained in sulphuric mineral lixivia
Description
A process of zirconium decontamination for recovering uranium and molybdenum contained in sulphuric mineral lixivia, is presented. The process consists in uranium and molybdenum joint extraction using an aqueous solution of long chain alkyl amine in inert diluent, under controlled flow conditions, doing selective washing of rich uranium and molybdenum solvent with sulfuric solution containing zirconium complexant agent. The selective reextraction of uranium using sodium chloride sulfuric solution, and the molybdenum final reextraction using sodium carbonate aqueous solution are done, obtaining uranium and molybdenum final concentrates by precipitation. The final concentrates are obtained with purity grades adjusted to commercial specifications. (M.C.K.)
Availability note (English)
MF available from INIS under the Report Number.Abstract (Portuguese)
Apresenta-se um processo para descontaminacao do zirconio na recuperaco do uranio e do molibidenio contidos em lixivias minerais sulfuricas. O processo consiste na extracao conjunta do uranio e molibidenio a partir de lixivias minerais sulfuricas, com uma solucao aquosa de alquil amina de cadeia longa em diluente inerte, em condicoes de vazoes controladas, fazendo-se uma lavagem seletiva do solvente rico em uranio e molididenio com solucao sulfurica contendo um agente complexante do zirconio. A reextracao seletiva do uranio com solucao sulfurica de cloreto de sodio, e a reextracao final do molibidenio com solucao aquosa de carbonato de sodio sao feitas, obtendo-se os concentrados finais de uranio e molibidenio por precipitacao. Os concentrados finais sao obtidos com graus de pureza ajustados as especificacoes comerciais. (autor)Files
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Additional details
Additional titles
- Original title (Portuguese)
- Processo para descontaminacao do zirconio na recuperacao do uranio e do molibdenio contidos em lixivias minerais sulfuricas
Publishing Information
- Imprint Pagination
- 13 p.
- IPC:
- Int. Cl. C01G 25/00.
- IPC
- Int. Cl. C01G 25/00.
- Patent number
- BR patent document 8102429/A/
INIS
- Country of Publication
- Brazil
- Country of Input or Organization
- Brazil
- INIS RN
- 20051610
- Subject category
- S11: NUCLEAR FUEL CYCLE AND FUEL MATERIALS;
- Descriptors DEI
- AQUEOUS SOLUTIONS; MOLYBDENUM; ORE CONCENTRATES; SEPARATION PROCESSES; URANIUM; ZIRCONIUM ORES
- Descriptors DEC
- ACTINIDES; DISPERSIONS; ELEMENTS; HOMOGENEOUS MIXTURES; METALS; MIXTURES; ORES; SOLUTIONS; TRANSITION ELEMENTS