空气气氛下铜阳极泥硫酸化焙烧蒸硒过程研究

以铜阳极泥为原料，研究了在空气气氛下硫酸化焙烧蒸硒过程的影响规律和动力学，通过硫酸化焙烧蒸硒实验，研究了影响蒸硒过程的主要因素和控制过程，得到了焙烧蒸硒过程的动力学方程，可为优化铜阳极泥硫酸化焙烧蒸硒工艺提供理论指导。试验结果表明，铜阳极泥硫酸化焙烧蒸硒效果受焙烧温度和焙烧时间的影响较大，但受空气流速和酸矿比的影响较小。在焙烧温度723K、焙烧时间20min、空气流速为200L/h、酸矿比为0.75的较优条件下，蒸硒渣中硒含量由8.50%降至0.24%，硒挥发率为96.54%。蒸硒过程受化学反应动力学控制，表观活化能为42.509 kJ/mol。

Study on Sulfated Roasting and Selenium Steaming Process of Copper Anode Mud in Air

Using copper anode slime as raw material, the influence law and kinetics of the process of sulfation roasting and selenium steaming under air atmosphere were studied. The kinetic equation of the selenium distillation process can provide theoretical guidance for optimizing the copper anode slime sulfate roasting and selenium distillation process. Under the optimal conditions of roasting temperature of 723K, roasting time of 20min, air flow rate of 200L/h, and acid-to-ore ratio of 0.75, the content of selenium in the steamed selenium residue decreased from 8.50% to 0.24%, and the volatilization rate of selenium was 96.54%.The process of selenium distillation was controlled by chemical reaction kinetics, and the apparent activation energy was calculated as 42.509 kJ/mol.