Abstract: The process conditions of hydrometallurgical electro-oxidation process of low-grade molybdenum middlings were studied. The reaction followed a kinetic model with the apparent activation energy of Ea as 16.55 kJ/mol. The optimized process conditions were obtained as follows: temperature of 40℃, slurry concentration of 50 g/L (S/L), current density of 1000 A/m2, NaCl concentration of 100 g/L, and pH value of 10. By electrolysis for 90 min under these conditions, both Mo leaching rate and current efficiency could reach 96.1% and 50.7% respectively.

Key words: electro-oxidation process, molybdenite, leaching rate, current efficiency

摘要： 采用电氧化法湿法分解低品位钼中矿，结果表明，电氧化分解钼中矿反应遵循一级反应动力学模型，其表观活化能为16.55 kg/mol，最佳浸矿工艺条件为：温度40℃、矿浆浓度(固液比)50 g/L、电流密度1000 A/m2、电解液NaCl浓度100 g/L及pH 10，在该条件下电解90 min，钼中矿浸出率和电流效率分别为96.1%和50.7%.

关键词: 电氧化法, 辉钼矿, 浸出率, 电流效率