有色金属科学与工程2017，Vol.8Issue(1)：46-50,5.DOI:10.13264/j.cnki.ysjskx.2017.01.008
CuO氯化过程动力学研究
Kinetics of chlorination process of copper oxide
摘要
Abstract
Recycling Fe elements from copper slag is beneficial to decrease the pressure on Chinese dependence on imported iron ore for the content of iron element in copper slag is as high as 30 % ~ 40 %. The feasibility of copper chlorination was analyzed by performing thermogravimetric analysis on the chlorination process of CuO-FeCl2 system at temperatures of 823 K, 873 K, 923 K and 973 K respectively. The influences of temperature and flow rate of argon gas in CuO-FeCl2 system on the reaction were discussed. The results show that chlorination rate increases with rising temperature. At the condition of 50 mL/min of argon flow rate, chlorination rate reaches a maximum of 62.46 % in CuO-FeCl2 system. The chlorination reaction of the system is determined to be zero order reaction by deriving kinetic equation of chlorination, and the system transited from chlorination kinetic region to diffusion region at 873 K. The reaction rate in kinetic region depends on CuCl2 evaporation rate, and the reaction rate of diffusion region depends on the rate of surface diffusion from FeCl2 to CuO.关键词
铜渣/氯化挥发/动力学/氯化率Key words
copper slag/chloride volatilization/kinetics/chlorination ratio分类
矿业与冶金引用本文复制引用
汤卫东,朱伟伟,姜平国,靖青秀..CuO氯化过程动力学研究[J].有色金属科学与工程,2017,8(1):46-50,5.基金项目
国家自然科学基金资助项目(51564016) （51564016）
江西省自然科学基金资助项目(20151BAB206029) （20151BAB206029）
