Solvent extraction and recovery of Y(Ⅲ) and Yb(Ⅲ) from fluorspar mineral  

作　　者：Y.A.El-Nadi N.E.El-Hefny H.F.Aly 

机构地区：[1]Hot Laboratories Centre,Atomic Energy Authority,13759,Egypt [2]Faculty of Science,Jazan University,Jazan 2097,Saudi Arabia

出　　处：《International Journal of Minerals,Metallurgy and Materials》2013年第8期713-719,共7页矿物冶金与材料学报（英文版）

摘　　要：Yttrium and ytterbium were extracted from sulfuric acid medium using triphenylarsine （TPAs） dissolved in kerosene. The influence of different factors, such as shaking time, extractants, metal ions, sulfate ion concentrations, as well as temperature, was studied in detail. From the slope analysis method and IR measurements, the structure of the extracted species was suggested as MSO4（HSO4）.TPAs, where M refers to Y（III） or Yb（III）. The equilibrium constants （Kex） and thermodynamic parameters, such as the change in enthalpy （△H）, free energy （△G）, and entropy （△S）, were calculated. The method of extraction and stripping was applied to obtain the aforementioned metals from a sample of fluorspar mineral giving a recovery yield of 88.2% and 83.5% for yttrium and ytterbium, respectively.Yttrium and ytterbium were extracted from sulfuric acid medium using triphenylarsine （TPAs） dissolved in kerosene. The influence of different factors, such as shaking time, extractants, metal ions, sulfate ion concentrations, as well as temperature, was studied in detail. From the slope analysis method and IR measurements, the structure of the extracted species was suggested as MSO4（HSO4）.TPAs, where M refers to Y（III） or Yb（III）. The equilibrium constants （Kex） and thermodynamic parameters, such as the change in enthalpy （△H）, free energy （△G）, and entropy （△S）, were calculated. The method of extraction and stripping was applied to obtain the aforementioned metals from a sample of fluorspar mineral giving a recovery yield of 88.2% and 83.5% for yttrium and ytterbium, respectively.

关 键 词：YTTRIUM YTTERBIUM extraction FLUORSPAR triphenylarsine 

分 类 号：TD97[矿业工程—选矿]