Published September 2023
| Version v1
Journal article
The mechanism of secondary countercurrent leaching of uranium-containing alkali slag
Creators
- 1. University of South China, Hengyang (China). School of Resources Environment and Safety Engineering
- 2. University of South China, Hengyang (China). Key Discipline Laboratory of National Defence for Biotechnology in Uranium Mining and Hydrometallurgy
- 3. Jianzhong Nuclear Fuel co., Ltd, China National Nuclear Corporation, Yibin (China)
Description
According to the difficult problem of disposal and recovery of uranium-containing waste slag, the leaching experiment was conducted by using the secondary countercurrent leaching process. The results showed that under conditions particle size of 1 mm, reaction time of 120 min, leaching temperature of 90 °C, nitric acid concentration of 429 g/L, liquid-solid ratio of 2.2:1, hydrogen peroxide dosage of 30 mL/L in primary leaching, then the temperature was switched to 130 °C during the secondary leaching. The leaching rate of uranium in alkali slag was 99.73% and the content of the uranium in insoluble slag was 0.788%. (author)
Additional details
Publishing Information
- Journal Title
- Journal of Radioanalytical and Nuclear Chemistry
- Journal Volume
- 332
- Journal Issue
- 9
- Journal Page Range
- p. 3827-3836
- ISSN
- 0236-5731
- CODEN
- JRNCDM
INIS
- Country of Publication
- Hungary
- Country of Input or Organization
- Hungary
- INIS RN
- 54097284
- Subject category
- S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
- Descriptors DEI
- ALKALI METALS; LEACHING; MATERIALS RECOVERY; PH VALUE; SLAGS; URANIUM; WASTES
- Descriptors DEC
- ACTINIDES; DISSOLUTION; ELEMENTS; MANAGEMENT; METALS; PROCESSING; SEPARATION PROCESSES; WASTE MANAGEMENT; WASTE PROCESSING
Optional Information
- Notes
- 28 refs.