Physical and Technical Problems of Reprocessed Uranium Enrichment with Repeated Recycling in Light-Water Reactors and Ways to Solve Them

Smirnov, A. Yu.; Gusev, V. E.; Sulaberidze, G. A.; Nevinitsa, V. A.; Bobrov, E. A.; Belov, I. A.; Rodionova, E. V.

doi:10.1007/s10512-020-00681-9

Cited by 5 publications

(2 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Large volumes of flammable-explosive extractant in the cycle required serious costs to ensure production safety. This led to the creation of more efficient devices of a new design: vibroand pneumatic extractors [8]. The latest achievement in extraction technology is centrifugal extractors, which improve the kinetics of the process and reduce the contact time of the phases to seconds.…”

Section: Introductionmentioning

confidence: 99%

Physical and Chemical Foundations of the Technology for Obtaining Uranium Oxides

Mukhachev¹,

Yelatontsev²,

Kharitonova³

2022

Problems of Atomic Science and Technology

View full text Add to dashboard Cite

The article presents the results of industrial testing of processes for obtaining high-purity uranium compounds, including extraction, concentration, and purification of uranium from a mixture of nitric and phosphoric acids, solid-phase stripping, and reduction of U(VI) to U(IV). It is shown that the combination of three different extraction lines for the concentration and purification of uranium from accompanying valuable elements and radioactive isotopes makes it possible to obtain a natural uranium concentrate with a low content of impurities, which determine the economics of uranium hexafluoride production. The processes of drying and roasting of crystals of ammonium uranyl tricarbonate after solid-phase re-extraction in an atmosphere of reducing gases of ammonia and hydrogen make it possible to obtain uranium dioxide suitable for fluorination to obtain tetra and uranium hexafluoride.

show abstract

Section: Introductionmentioning

confidence: 99%

Physical and Chemical Foundations of the Technology for Obtaining Uranium Oxides

Mukhachev¹,

Yelatontsev²,

Kharitonova³

2022

Problems of Atomic Science and Technology

View full text Add to dashboard Cite

show abstract

“…As an example, we will consider the isotopic composition of the reprocessed uranium extracted and recovered from the reactor of Russian design -VVER. The original isotopic composition of the RepU from the second recycle, presented in the table 1[21]. (ii)…”

mentioning

confidence: 99%

On the problems of reusing reprocessed uranium by enrichment in schemes based on ordinary cascades

Gusev

2022

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

The problem of spent nuclear fuel attracts considerable attention while its quantity is accumulating worldwide. The problem of long-term supply of the fresh fuel also remains important. One of the strategies to solve both problems is reusing the spent nuclear material. The uranium, in this way, could be recycled multiple times in light-water reactors. In order to recycle the uranium, it is extracted from the irradiated fuel during the reprocessing and then enriched in 235U, taking into account the limitations on reactor-born isotopes 232,236U in the final product. The only way to do this is enrichment in cascades of gas centrifuges. However, not every cascade scheme is able to re-enrich the uranium for multiple recycles, utilizing the whole amount of uranium extracted from the irradiated fuel each time. This study shows that configurations based on ordinary three-flow cascades could not be used for this purpose. In particular, we have shown that starting from the second uranium fuel cycle, such schemes are no longer able to reclaim the necessary proportion of the reprocessed uranium.

show abstract

Easily synthesized mesoporous aluminum phosphate for the enhanced adsorption performance of U(VI) from aqueous solution

Chen

Zhang

et al. 2022

Journal of Hazardous Materials

View full text Add to dashboard Cite

Physical and Technical Problems of Reprocessed Uranium Enrichment with Repeated Recycling in Light-Water Reactors and Ways to Solve Them

Cited by 5 publications

References 3 publications

Physical and Chemical Foundations of the Technology for Obtaining Uranium Oxides

Physical and Chemical Foundations of the Technology for Obtaining Uranium Oxides

On the problems of reusing reprocessed uranium by enrichment in schemes based on ordinary cascades

Easily synthesized mesoporous aluminum phosphate for the enhanced adsorption performance of U(VI) from aqueous solution

Contact Info

Product

Resources

About