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Scientific, Technological and Production Journal
ISSN 2079–3332 (print)
ISSN 3034-6835 (online)
founded in 2001

An acid-free method for increasing the oxidation-reduction potential of uranium in-situ leaching recycle solution

Original articles: 2026 No 3

An acid-free method for increasing the oxidation-reduction potential of uranium in-situ leaching recycle solution

DOI: 10.56195/20793332-2026-26-3-27-32

Read in pdf R. А. Yusubaliev1, Ye. S. Oryngozhin2,3, M. K. Djexenov4, Ye. Ye. Oryngozha5, N. A. Miletenko6
  1. National Engineering Academy of the Republic of Kazakhstan, Almaty, Republic of Kazakhstan
  2. Institute of mining after D.A. Kunaevа, Almaty, Republic of Kazakhstan
  3. Al-Farabi Kazakh national university, Almaty, Republic of Kazakhstan
  4. Atyrau university named after H. Dosmukhamedova, Atyrau, Republic of Kazakhstan
  5. Almaty University of Power Engineering and Telecommunications named after Gumarbek Daukeyev, Almaty, Republic of Kazakhstan
  6. Academician Melnikov Institute of Comprehensive Exploitation of Mineral Resources (IPKON), Russian Academy of Sciences, Moscow, Russian Federation
p. 27-32, No.3/2026
Abstract:
The development of Kazakhstan’s uranium mining industry is linked to addressing major scientific and practical challenges. Modern uranium mining is characterized by high dynamism and the occasional occurrence of radiation-hazardous situations that require rapid and effective solutions. Each deposit has its own specific characteristics, necessitating a certain amount of scientific research not only during the development of new deposits but also during the application of existing technical solutions. Since the process flowsheet used at the in-situ leaching sites in Kazakhstan involves the use of recirculating solutions containing several petrogenic elements (Na, Ka, Ca, Mg, Al, Fe), as well as Cl- and NO3 - ions, their impact on the change in ORP during interaction with carbonates in mineralized sulfuric acid solutions cannot be ignored. The interaction of sulfuric acid solutions with carbonates is accompanied by a significant increase in pH. In addition to simple metal ions and their sulfate complexes, well-known hydrocomplexes, as well as bicarbonate and carbonate complexes, appear in the solutions. This article presents an acid-free method for increasing the redox potential of uranium borehole leaching recycle solutions using ultrasound and describes the results of laboratory experiments confirming the high efficiency of the developed method.
Keywords:
uranium, underground leaching, oxidation-reduction potential, method, solution, efficiency
For citation:
Yusubaliev R.А., Oryngozhin Ye.S., Djexenov M.K., Oryngozha Ye.Ye., Miletenko N.A. An acid-free method for increasing the oxidation-reduction potential of uranium in-situ leaching recycle solution. Mine Surveying and Subsurface Use. 2026; 26 (3): 27-32. (In Russ.). https://doi.org/10.56195/20793332-2026-26-3-27-32.
Information about the authors:
  1. Renat A. Yusubaliev Surveyor, National Engineering Academy of the Republic of Kazakhstan, Almaty, Republic of Kazakhstan; https://orcid. org/0000-0001-8993-9986
  2. Yernaz S. Oryngozhin – Dr. Sci. (Eng.), Al-Farabi Kazakh National University, Chief Researcher at the Institute of Mining named after D.A. Kunaev, Almaty, Republic of Kazakhstan
  3. Makhambet K. Djexenov Cand. Sci. (Geography), Atyrau university named after H. Dosmukhamedova, Atyrau, Republic of Kazakhstan; https://orcid.org/0000-0002-1741-3931
  4. Yeraly Ye. Oryngozha – PhD doctoral student, Almaty University of Power Engineering and Telecommunications named after Gumarbek Daukeyev, Almaty, Republic of Kazakhstan; This email address is being protected from spambots. You need JavaScript enabled to view it.; https://orcid.org/0000-0002-9130-0994
  5. Natalya A. Miletenko Cand. Sci. (Eng.), Senior Researcher, Institute of Comprehensive Exploitation of Mineral Resources named after academician N.V. Melnikov Russian Academy of Sciences, Moscow, Russian Federation; https://orcid.org/0000-00025594-3036
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