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Comprehensive Utilization Processes of Tailings from Gold Ore Concentrators

Gold tailings are solid wastes generated after gold ore undergoes mineral separation processing. If not handled scientifically and rationally, they will not only occupy large quantities of land resources but also cause certain environmental pollution. With continuous changes in the international gold market, China’s gold industry is facing unprecedented challenges. Therefore, while vigorously advancing mining and mineral separation technologies, emphasis should also be placed on strengthening the comprehensive utilization processes of tailings from gold ore concentrators.

1、Classification Treatment Process:This process involves processing selected ore samples via a spiral chute to separate them into coarse sand, middlings, and fine mud, followed by gold extraction from the coarse sand.

2、High-Intensity Magnetic Separation Process for Iron Removal:This process is designed to reduce the iron content in ore and enhance the purity of gold ore. When applied to tailings treatment, it aims to remove iron elements from ores that have been processed by spiral chutes, enabling the tailings to meet the basic requirements for ceramic production.

3、Desulfurization Process:Even after classification treatment and high-intensity magnetic iron removal, some sulfur impurities still remain in mine tailings. Pyrite is the mineral with the highest sulfur content and can be completely removed during the reverse flotation process following high-intensity magnetic iron separation. However, adding only xanthate cannot eliminate all sulfur elements from the remaining ore, making desulfurization treatment necessary.

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