摘要
研究了闪锌矿的氧压浸出并采用收缩核动力学模型分析了浸出反应动力学,考察了氧压浸出温度、初始酸浓度、搅拌速度、氧分压等对锌、铁浸出率的影响。结果表明:最佳条件下,闪锌矿的浸出主要受界面化学反应控制,表观活化能为42.43 kJ/mol;加压酸浸过程中,保持工艺参数稳定对降低浸出速率受扩散的影响及提高浸出率有利。
The oxygen pressure leaching of sphalerite and leaching kinetics were researched.The effects of temperature,initial acid concentration,stirring speed and oxygen partial pressure on leaching of zinc and iron were examined.The results show that under the optimal conditions,leaching reaction is mainly controlled by interfacial chemical reaction,and the apparent activation energy is 42.43 kJ/mol.At the pressurized leaching,keeping the process parameters stable is beneficial to reducing the influence of diffusion on the leaching of zinc,and improving the zinc leaching rate.
作者
凡杰
谢刚
田林
李小英
王冰冰
朱炳桥
FAN Jie;XIE Gang;TIAN Lin;LI Xiaoying;WANG Bingbing;ZHU Bingqiao(Faculty of Metallurgical and Energy Engineering,Kunming University of Science andTechnology,Kunming 650093,China;State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization,Kunming University of Science and Technology,Kunming 650093,China;State Key Laboratory of Pressurized Hydrometallurgy Technology for Associated Nonferrous Metal Resources,Kunming 650503,China)
出处
《湿法冶金》
CAS
北大核心
2020年第6期483-489,共7页
Hydrometallurgy of China
关键词
闪锌矿
加压浸出
硫酸
锌
动力学
sphalerite
pressure leaching
sulfuric acid
zinc
kinetic
