Technology Development of Gold Heap Leaching in Kazakhstan: An Overview
Surimbayev B. Bolotova L. Akcil A. Yessengarayev Y. Kanaly Y. Akzharkenov M. Khumarbekuly Y. Shalgymbayev S. Zhumabai S. Mambetzhanova A.
2026Taylor and Francis Ltd.
Mineral Processing and Extractive Metallurgy Review
2026#47Issue 2226 - 253 pp.
Kazakhstan has exhibited consistent growth in gold production and is currently ranked among the top ten leading countries in the field. This article provides an overview of the development of heap leaching technology for extracting gold from oxidized ores in Kazakhstan. Key factors influencing the efficiency of the heap leaching process are discussed, including the mineralogical composition of the ores, the particle size of the gold, the presence of associated minerals, and the challenges posed by leaching in harsh climatic conditions. The main characteristics of Kazakhstan’s heap leaching plants are presented. A comparative analysis is conducted with global practices, including those in the USA, Canada, China, Russia, Uzbekistan, and other countries. This analysis covers the main stages of the process: ore preparation, gold recovery from pregnant solutions through cementation, adsorption onto activated carbon and ion-exchange resins, desorption, and sorbent regeneration. The advantages and disadvantages of different methods for extracting gold from solutions are identified, along with an evaluation of the costs associated with sorbents. Special attention is given to the Kazmekhanobr developed technology for the intensive regeneration of ion-exchange resins saturated with gold. Additionally, capital and operational costs associated with the heap leaching process are examined, alongside environmental considerations.
gold , hydrometallurgy, heap leaching , Kazakhstan mining industry , sorption, desorption, oxidized gold-bearing ores
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Laboratory of Precious Metals, Kazmekhanobr State Scientific Production Association of Industrial Ecology, Almaty, Kazakhstan
School of Mining and Geosciences, Nazarbayev University, Astana, Kazakhstan
School of Material Science and Green Technology, Kazakh-British Technical University, Almaty, Kazakhstan
Department of Metallurgy and Mineral Processing, Satbayev University, Almaty, Kazakhstan
Laboratory of Precious Metals
School of Mining and Geosciences
School of Material Science and Green Technology
Department of Metallurgy and Mineral Processing
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