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September 10, 2025Applied SciencesOpen Access

Novel Approach for the Leaching of Low-Grade Copper–Zinc Concentrate

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This research shows enhanced metal extraction in sulfide concentrates, indicating the efficacy of a novel two-stage leaching method.

Copper and zinc extraction increased significantly with temperature from 50 to 90 °C, enhancing recovery rates.
Ferric leaching conditions did not enhance metal extraction above 20 g/L of Fe3+, highlighting the importance of optimal conditions.
The combined alkaline sulfide and ferric leaching approach effectively disrupts tennantite and reduces arsenic content.
Pre-treatment with sulfide leaching significantly improved copper extraction, emphasizing its role in the overall leaching efficiency.

Valiyev et al. (2025) studied this question.

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