DEVELOPMENT OF A REAGENT REGIME FOR THE COLLECTIVE FLOTATION OF COPPER-PORPHYRY ORE USING SELECTIVE SULFHYDRYL COLLECTORS

Abstract

Copper-porphyry ores are among the most important sources of copper production worldwide. The Kalmakyr deposit of the Almalyk Mining and Metallurgical Complex (AGMK) is one of the largest copper-porphyry deposits in Central Asia and is characterized by a complex mineral composition, including chalcopyrite, bornite, molybdenite, pyrite, and various gangue minerals. Efficient beneficiation of such ores requires the development of optimized flotation reagent regimes. This study analyzes the development of a reagent regime for the collective flotation of copper-porphyry ore using selective sulfhydryl collectors. The research is based on technological data and scientific literature related to flotation processes applied to porphyry copper ores. Particular attention is given to the selection of sulfhydryl collectors, frothers, modifiers, and pH regulators used in the flotation of Kalmakyr ore. Experimental and literature data demonstrate that selective sulfhydryl collectors significantly improve copper recovery while reducing the flotation of undesirable minerals such as pyrite. The study confirms that the correct combination of xanthates, dithiophosphates, and auxiliary reagents improves flotation selectivity and enhances concentrate quality. The results may be useful for improving flotation regimes at large copper processing plants.