高铟闪锌矿在氧压酸浸中铟浸出动力学的研究

铟是一种重要的多用途战略金属，具有较高的工业应用价值，但无独立可供开采的矿床，常伴生于铅锌等硫化矿中.因此，本文在传统电加热条件下进行了高铟闪锌矿氧压酸浸过程中铟浸出动力学实验的研究.结果表明:采用“有固态产物层的液-固相浸出反应动力学模型”对铟浸出动力学进行了研究，可知其浸出速率受到界面化学反应控制，其表观活化能为69.735kJ/mol，以及高铟闪锌矿氧压酸浸过程中铟浸出率随粒度减小、初始酸度增大、氧分压增大、浸出温度增大而增大.

Kinetics of Indium Leaching from High Indium Sphalerite in Oxygen Pressure Acid Leaching Process

Indium is an important multi-purpose strategic metal and has many potential high-valuable industrial applications. However， there are no independent deposits， often associated with sulfide ore such as lead and zinc. In this work， the indium leaching kinetics of oxygen pressure acid leaching were studied under a traditional electric heating condition. The effects of particle size， temperature， H₂SO₄ concentration， and oxygen partial pressure on leaching rate of indium were investigated. Indium leaching kinetics was studied using a "liquid-solid phase leaching reaction kinetics model with solid product layer". The results showed that indium leaching process was controlled by interfacial chemical reaction with the apparent activation energy of 69.735kJ/mol. Moreover， the leaching efficiency of indium increased with the increase of the initial acid concentration， oxygen partial pressure， leaching temperature， and the decrease of particle size.