CAJ | 학술논문

采用DIBK和TBP混合萃取剂在硫氰酸盐介质中对锆铪进行萃取分离,考察TBP的加入量、水相酸度、料液中锆铪浓度、盐析剂加入量、萃取温度和萃取时间等因素对锆铪分离的影响.结果表明:DIBK-TBP体系优先萃取铪；在优化工艺条件下,即20％的TBP、水相酸度3.0 mol/L、硫酸铵加入量0.8～1.25 mol/L、室温、萃取时间10 min,锆铪的分离系数可达到9.3.
채용DIBK화TBP혼합췌취제재류청산염개질중대고협진행췌취분리,고찰TBP적가입량、수상산도、료액중고협농도、염석제가입량、췌취온도화췌취시간등인소대고협분리적영향.결과표명:DIBK-TBP체계우선췌취협；재우화공예조건하,즉20％적TBP、수상산도3.0 mol/L、류산안가입량0.8～1.25 mol/L、실온、췌취시간10 min,고협적분리계수가체도9.3.
A novel process for the separation of hafnium from thiocyanic acid medium using the mixture of diisobutyl ketone (DIBK)and tributyl phosphate (TBP) as the extractant was developed.This extraction process was investigated experimentally as a function of the amount of TBP added,acidity,zirconium and hafnium concentrations,salting-out agent,temperature,duration,respectively.The results show that hafnium is enriched in the organic layer and zirconium is in aqueous layer in DIBK-TBP system.Under the optimal technological conditions:TBP addition 20％ (v/v),aqueous phase acidity 3.0 mol/L,ammonium sulfate addition 0.8-1.25 mol/L,room temperature and extraction time 10 min,the separation factor of hafnium from zirconium is 9.3.