Zhalgasuly, N. та Yazikov, V. та Mukhanov, T. та Bektibayev, U. та Zabaznov, V. (2024) THEORY AND PRACTICE OF UNDERGROUND LEACHING OF MINERAL RESOURCES. UNIVERSITAS Publishing. с. 230-285.

Text 14 (1).pdf Download(1MB)

English abstract

The paper describes the vast experience of in-situ leaching in Kazakhstan, ac- cumulated during 30 years of its application and improvement for mining, mainly uranium. About half of the world's reliably explored uranium reserves are concentrated in the subsoil of Kazakhstan. A unique feature of the country's uranium reserves is that 75% of them are concentrated in deposits associated with regional zones of for- mation oxidation. This type of deposits is not widespread in the world. In Kazakh- stan, these deposits are concentrated mainly in the Shu-Sarysu, Syrdarya and Ili uranium-ore provinces. A number of deposits are currently being developed by the Stepny, Central and №6 ore departments of NAC Kazatomprom CJSC. Extraction is carried out by a relatively cheap and environmentally preferable method of in-situ leaching through a system of wells drilled from the surface underground borehole leaching (UBL). For these purposes, a comprehensive research method is used, including: analy- sis and synthesis of practical and theoretical data in the field of uranium mining by underground leaching and the environmental problems arising in this case, mathe- matical modeling method, analytical calculations, analytical calculations, laboratory work and in-depth field experiments in production conditions, generalisation and transfer of the obtained scientific and practical data to design organisations and in- dustrial enterprises dealing with uranium mining by in-situ leaching. The material from long-term observations of the process of aquifer self-regeneration is compel- ling and illustrative in the Irkol field of Syrdarya province in Kazakhstan. The purpose of the work is to establish the patterns of natural demineralization of residual solutions of underground sulfuric acid leaching of uranium. For this pur- pose, at all operating UL enterprises, installations were designed and built to extract associated useful components from productive solutions. In conclusion, it can be noted that the development and improvement, based on many theoretical and applied studies, of the method of borehole in-situ leaching of metals described in this work is the fruit of the creative efforts of a large number of specialists in various fields of knowledge both in the republic and abroad.

Перегляд елементу

Завантажень