KCl-NaCl-K_2HfCl_6体系中熔盐电解精炼铪的研究  

REFINING OF HAFNIUM BY MOLTEN SALT ELECTROLYSIS IN KCl-NaCl-K_2HfCl_6 SYSTEM

作　　者：柳旭[1,2] 李国勋[1] 宋波[2] 王力军[1] 

机构地区：[1]北京有色金属研究总院稀有金属冶金材料研究所,北京100088 [2]北京科技大学冶金与生态工程学院,北京100083

出　　处：《矿冶》2014年第4期56-59,64,共5页Mining And Metallurgy

基　　金：国家科技支撑计划项目(2012BAB10B10);国家自然科学基金项资助目(51204021)

摘　　要：在KCl-NaCl-K2HfCl6熔盐体系中,对粗铪进行熔盐电解精炼。考察了电解温度、阴极电流密度以及电解质中铪的浓度等因素对电解的影响。结果表明,当电解温度低于810℃时,电解质的挥发损失和铪离子的浓度变化均较小;当阴极电流密度低于0.5 A/cm2、电解质中铪的浓度在5.1%左右时,有利于得到颗粒较大的金属铪。Electro-refining of hafnium was investigated in molten KC1-NaC1-K2HfC16 system. The influences of electrolysis temperature, cathode current density and the concentration of hafnium on hafnium electro-refining were examined. The results showed that the volatilization loss of the concentration both were small when the electrolytic temperature prepared with the cathode current density under 0.5 A/cm2 and electrolyte and the changes of the soluble hafnium is below 810 ℃. Bigger and block hafnium can be the hafnium concentration around 5. 1%.

关 键 词：熔盐电解精炼 铪 KCl-NaCl-K2HfCl6体系 粒度 

分 类 号：TF841.4[冶金工程—有色金属冶金]