TECHNOLOGY FOR THE RECEIVING AND CRUSHING OF OXIDIZED ORE AT THE MARJONBULOQ GOLD RECOVERY PLANT

Abstract

This article highlights the technological features of ore reception, batching, blending, and crushing processes at the Marjonbuloq Gold Recovery Plant. It provides a technological justification for the separate storage of ores based on their mineralogical composition, with sulfide ores supplied from the Zapad Peremichka and Zapad Tangi open-pit mines and oxide ores from the Sariqbel open-pit mine. The article emphasizes that the processing scheme is directly influenced by the form in which gold occurs: in sulfide ores, it is associated with pyrite and arsenopyrite, whereas in oxide ores, it is found in a free state or associated with iron hydroxides. The processes for forming 300-ton batches in production, along with sampling and preparation for analysis using the coning and quartering method, are described. Based on laboratory analyses, it is demonstrated that blending is performed to create a technological mixture with a stable granulometric and chemical composition. At the coarse and fine crushing stages, a jaw crusher and a ball mill are utilized, and the importance of maintaining pulp density within the 1900-2000 g/l range is substantiated. The research results highlight the significance of the technological control system in optimizing the granulometric composition, increasing the degree of mineral particle liberation, and ensuring the stability of subsequent cyanidation-sorption processes.