| 초록 |
ITO (Indium Tin Oxide) transparent electrode of after used LCD, contains indium oxides, which is classified as an expensive rare metal. Therefore, LCD recycling is becoming an important issue in terms of solving environmental problems and securing resources. Followed by dismantling of waste LCD, for hydrometallurgical indium recovery from LCD through solvent extraction is the rudimentary stage. The determination of optimum conditions is rather essential from efficient solvent extraction process development perspective. Hence, solvent extraction efficiency of indium as function of leachant(A)/extractant(O) ratio, extractant(O)/stripping reagent(B) ratio, reaction temperature were investigated. Through our investigation, A/O and O/B ratio varies from 1 to 8, reaction temperature varies from 25 ˚C (RT) to 80 ˚C. As extractant and stripping reagent, D2EHPA and HCl were used, respectively. |
