工艺参数对铜阳极泥硫酸化焙烧蒸硒的影响  

Effect of Process Parameters on Selenium Evaporation by Sulfation Roasting of Copper Anode Slime

作　　者：王凯徽 陈为亮 廖春发[3] 张栋 张勇 李钦[1,2] 曾颜亮[3] WANG Kaihui;CHEN Weiliang;LIAO Chunfa;ZHANG Dong;ZHANG Yong;LI Qin;ZENG Yanliang(National Engineering Research Center of Vacuum Metallurgy,Kunming 650093,China;Faculty of Metallurgy and Energy Engineering,Kunming University of Science and Technology,Kunming 650093,China;School of Metallurgy and Chemical Engineering,Jiangxi University of Science and Technology,Ganzhou 341000,China)

机构地区：[1]真空冶金国家工程研究中心,昆明650093 [2]昆明理工大学冶金与能源工程学院,昆明650093 [3]江西理工大学冶金与化学工程学院,江西赣州341000

出　　处：《有色金属工程》2022年第10期72-79,共8页Nonferrous Metals Engineering

基　　金：国家自然科学基金资助项目(U1802251)。

摘　　要：以铜阳极泥为原料,研究了空气气氛下,硫酸化焙烧蒸硒过程中焙烧温度和焙烧时间等主要因素对蒸硒的影响。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,受空气流速和酸矿比的影响较小;在焙烧温度723 K、焙烧时间20 min、空气流速200 L/h、酸矿比0.75的较优条件下,蒸硒渣中硒含量可降至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。Copper anode slime was used as raw material to study the effects of roasting temperature and roasting time on selenium evaporation during sulfated roasting under air atmosphere.The results show that the effect of sulfated roasting of copper anode slime on selenium evaporation is greatly affected by roasting temperature and roasting time,and is less affected by air flow and acid ilmenite ratio.Under the optimum conditions of roasting temperature 723 K,roasting time 20 min,air flow rate 200 L/h and acid-ore ratio 0.75,the selenium content in selenium residue decreased to 0.24%,and the volatilization rate of selenium was 96.54%.The process of selenium evaporation is controlled by chemical reaction kinetics,and the apparent activation energy is 42.509 kJ/mol.

关 键 词：铜阳极泥 硫酸化焙烧 蒸硒 冶金动力学 

分 类 号：X756[环境科学与工程—环境工程]