DIBK-TBP体系萃取铪和锆的动力学研究  

Extraction Kinetics of Hafnium and Zirconium in DIBK-TBP System

作　　者：徐志高[1,2] 吴明[2] 池汝安[1] 李攀红[1] 王力军[2] 阳慧芳[1] 

机构地区：[1]武汉工程大学绿色化工过程教育部重点实验室,武汉430073 [2]北京有色金属研究总院矿物资源与冶金材料研究所,北京100088

出　　处：《有色金属（冶炼部分）》2014年第2期35-38,共4页Nonferrous Metals（Extractive Metallurgy)

基　　金：国家自然科学基金资助项目(51174146;51374158);"十二五"国家科技支撑计划项目(2012BAB10B10);教育部新世纪人才支持计划项目(NCET-13-0941);教育部科学技术研究重点项目(212110);教育部长江学者和创新团队发展计划项目(IRT0974)

摘　　要：在恒界面池中研究DIBK-TBP协同萃取体系萃取铪、锆的动力学,考察了温度、界面积和搅拌强度等对萃取速率的影响。结果显示,DIBK-TBP体系萃取铪和锆的过程符合一级动力学反应;对铪的萃取为相内反应和扩散共同影响的混合控制类型,表观活化能-43.106kJ/mol;对锆的萃取与搅拌强度、比界面积无关,为相内反应控制类型,表观活化能-16.024kJ/mol。The extraction kinetics of synergistic extraction system of DIBK-TBP for hafnium and zirconium were studied in constant interface pool. The effects of temperature, interracial area, and stirring speed on extraction rate of hafnium and zirconium were investigated. The results show that extraction process of hafnium and zirconium in DIBK-TBP system fits with pseudo-first order reaction. Affected by inner phase reaction and diffusion, the extraction process of hafnium is mix-controlled with apparent activation energy of -43. 106 kJ/mol. Under no influence of stirring speed and interracial area, the extraction process of zir- conium is inner phase reaction control type with apparent activation energy of --16. 204 kJ/mol.

关 键 词：DIBK TBP 萃取 锆 铪 动力学 

分 类 号：TF841.4[冶金工程—有色金属冶金]