THE INFLUENCE OF CHLORIDE IONS ON URANIUM SORPTION FROM PRODUCTIVE SOLUTIONS OF SULFURIC ACID LEACHING OF ORES
Kuttybayev A. Khayitov O. Saidova L. Umirzokov A. Makhat Y.
2025National Academy of Sciences of the Republic of Kazakhstan
News of the National Academy of Sciences of the Republic of Kazakhstan, Series of Geology and Technical Sciences
2025#2025Issue 4211 - 221 pp.
The article investigates sorption methods for uranium extraction using ion-exchange resins, with a focus on the influence of chloride ions in productive solutions. The relevance of the study stems from the negative impact of elevated chloride content on resin capacity and uranium recovery efficiency. Analytical methods were applied to both solutions and ion-exchange resins, and experiments were conducted on uranium sorption using anion and cation exchangers under varying acidity conditions. The key hypothesis is that increasing chloride ion concentration significantly reduces the sorption capacity of the resins. The results confirm that when chloride content exceeds 3 g/L, uranium recovery efficiency decreases substantially, making the use of certain anion exchangers economically unfeasible. In exogenous ore-forming processes, geochemical barriers play an important role-these are zones in the Earth’s crust where the intensity of chemical element migration sharply decreases over a short distance, leading to their accumulation. This definition of a barrier is given by A.I. Perelman, the founder of the theory of geochemical barriers. Nearly all exogenous ore deposits are formed at some type of geochemical barrier. In particular, uranium mineralization can form at evaporative, neutralization, sorption, and most commonly-at redox barriers, which are typically divided into two subtypes: gley and hydrogen sulfide barriers. The obtained data can be used to optimize uranium extraction technologies, which is important for improving the efficiency of hydrometallurgical processes and reducing processing costs. It is recommended to continue research on the influence of other anions and environmental conditions to develop more effective uranium sorption methods.
chloride , depressant , desorption , ion , ion exchange , resin , sorbent
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Satbayev University, Almaty, Kazakhstan
Tashkent State Technical University named after Islam Karimov, Tashkent, Uzbekistan
Navoi Branch of the Academy of Sciences of the Republic of Uzbekistan, Navoi, Uzbekistan
Satbayev University
Tashkent State Technical University named after Islam Karimov
Navoi Branch of the Academy of Sciences of the Republic of Uzbekistan
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