Recovery of uranium from conversion production sludge by leaching with nitric acid and subsequent ion-exchange concentration

Skripchenko, Sergey Yu; Nalivaiko, Ksenia A.; Titova, Svetlana M.; Rychkov, Vladimir N.; Semenishchev, Vladimir S.

doi:10.1016/j.hydromet.2023.106255

Cited by 4 publications

(3 citation statements)

References 32 publications

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“…The connecting pipelines of the injection and production wells are equipped with header systems, which are linked to the processing plant via trunk lines. Following the extraction of uranium from the production wells, the pregnant solution undergoes specific processing [48,64,65], including uranium recovered by ion exchange, concentration, filtration, and drying. Ultimately, the qualified uranium concentrate, predominantly composed of triuranium octoxide (U 3 O 8 ), known as yellowcake [66], is obtained.…”

Section: In Situ Leaching Techniquesmentioning

confidence: 99%

“…This process oxidizes U(IV) to the hexavalent form, enhancing its reactivity and enabling subsequent reactions with the acid leaching solution to form soluble complexes. At present, sulfuric acid (H 2 SO 4 ) is the most frequently utilized component in the acid leaching solution [64], while nitric acid (HNO 3 ) and hydrochloric acid (HCl) are occasionally employed [84]. Common oxidizing agents used in conjunction with acid solutions include oxygen (O 2 ) [82] and hydrogen peroxide (H 2 O 2 ) [85,86].…”

Section: Acid Leachingmentioning

confidence: 99%

“…Obligatory use of corrosion-resistant instruments and pipelines; Significant impact on groundwater within the wellfield;[37,48,64,78,87,119] …”

mentioning

confidence: 99%

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A Review of In Situ Leaching (ISL) for Uranium Mining

Li,

Yao

2024

Mining

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Uranium, a cornerstone for nuclear energy, facilitates a clean and efficient energy conversion. In the era of global clean energy initiatives, uranium resources have emerged as a vital component for achieving sustainability and clean power. To fulfill the escalating demand for clean energy, continual advancements in uranium mining technologies are imperative. Currently, established uranium mining methods encompass open-pit mining, underground mining, and in situ leaching (ISL). Notably, in situ leaching stands out due to its environmental friendliness, efficient extraction, and cost-effectiveness. Moreover, it unlocks the potential of extracting uranium from previously challenging low-grade sandstone-hosted deposits, presenting novel opportunities for uranium mining. This comprehensive review systematically classifies and analyzes various in situ leaching techniques, exploring their core principles, suitability, technological advancements, and practical implementations. Building on this foundation, it identifies the challenges faced by in situ leaching and proposes future improvement strategies. This study offers valuable insights into the sustainable advancement of in situ leaching technologies in uranium mining, propelling scientific research and practical applications in the field.

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