title: Recovery of indium from used LCD panel by a time efficient and environmentally sound method assisted HEBM.
abstract: In this study, a method which is environmentally sound, time and energy efficient has been used for recovery of indium from used liquid crystal display (LCD) panels. In this method, indium tin oxide (ITO) glass was crushed to micron size particles in seconds via high energy ball milling (HEBM). The parameters affecting the amount of dissolved indium such as milling time, particle size, effect time of acid solution, amount of HCl in the acid solution were tried to be optimized. The results show that by crushing ITO glass to micron size particles by HEBM, it is possible to extract higher amount of indium at room temperature than that by conventional methods using only conventional shredding machines. In this study, 86% of indium which exists in raw materials was recovered about in a very short time.
authors.affiliation: Division of Advanced Materials Engineering & Institute for Rare Metals, Kongju National University, Cheonan 331-717, Republic of Korea.
authors.forename: Cheol-Hee
authors.initials: CH
authors.lastname: Lee
authors.forename: Mi-Kyung
authors.initials: MK
authors.lastname: Jeong
authors.forename: M Fatih
authors.initials: MF
authors.lastname: Kilicaslan
authors.forename: Jong-Hyeon
authors.initials: JH
authors.lastname: Lee
authors.forename: Hyun-Seon
authors.initials: HS
authors.lastname: Hong
authors.forename: Soon-Jik
authors.initials: SJ
authors.lastname: Hong
mesh_terms: D007204:Indium / Q000302:isolation & purification*; D050866:Liquid Crystals; D010316:Particle Size; D012037:Refuse Disposal / Q000379:methods*; D062611:Solid Waste; D012996:Solutions; D017971:Tin Compounds / Q000737:chemistry
chemical_list: D062611:Solid Waste; D012996:Solutions; D017971:Tin Compounds; D007204:Indium; C109984:indium tin oxide