Study on Hydrometallurgical Treatment of Oxide Ores Bearing Zinc

As the depletion of zinc sulfide ores becomes more severe, investigations into recovery from oxide have aroused interest. In this regard, acid-based hydrometallurgical treatment strategies had great effectiveness. However, they are inadequate for low-grade ores. study, we examined alkaline gossan that bear zinc, such as siderite and limonite. Additionally, particular note, effects a leaching agent, its concentration time, temperature, liquid-to-solid ratio, well agitation rate on were studied to evaluate these parameters kinetics dissolution. The results showed is controlled by single rate-controlling step with an activation energy 4.458 kJ/mol before 120 min 5.536 after min, efficiency less than 50% in all leachings.