Published June 1988
| Version v1
Report
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Process study for removal of radioactivity from lanthanum oxide by HDEHP in HNO3 system
Creators
- 1. Qinghua Univ., Beijing, BJ (China). Inst. of Nuclear Energy Technology
Description
The extraction mechanism and separation process of lanthanum and actinium were studied in HDEHP (kerosene)-HNO2 system. The mathematical model for the extraction of lanthanum and actinium by 50% HDEHP was given from the experimental results. The test tube bench scale and multistage counter-current extraction by centrifugal extractors were carried out for removal α-radioactiity of La2O3. The results showed that the recovery of lanthanum is more than 95% at proper condition, the decontamination factor is more than 500 for α-radioactivity and more than 1000 for calcium. The quality of La2O3 product satisfies the demands for fluorescent material
Availability note (English)
MF available from INIS under the Report Number.Files
21042383.pdf
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Additional details
Publishing Information
- Imprint Pagination
- 11 p.
- Report number
- CNIC--00218
INIS
- Country of Publication
- China
- Country of Input or Organization
- China
- INIS RN
- 21042383
- Subject category
- S38: RADIATION CHEMISTRY, RADIOCHEMISTRY AND NUCLEAR CHEMISTRY;
- Descriptors DEI
- ACTINIUM; DECONTAMINATION; DISTRIBUTION FUNCTIONS; EFFICIENCY; HDEHP; LANTHANUM; LANTHANUM OXIDES; MATHEMATICAL MODELS; PH VALUE; RADIOACTIVITY; SOLVENT EXTRACTION
- Descriptors DEC
- ACTINIDES; CHALCOGENIDES; CLEANING; ELEMENTS; ESTERS; LANTHANUM COMPOUNDS; METALS; ORGANIC COMPOUNDS; ORGANIC PHOSPHORUS COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PHOSPHORIC ACID ESTERS; RARE EARTH COMPOUNDS; RARE EARTHS; SEPARATION PROCESSES
Optional Information
- Secondary number(s)
- TSHUNE--0006.