Indium Recovery from Indium Tin Oxide, ITO, Thin Film Deposited on Glass Plate by Chlorination Treatment with Ammonium Chloride

Osamu Terakado; Daisuke Iwaki; Kyohei Murayama; Masahiro Hirasawa

doi:10.2320/matertrans.M2011106

Osamu Terakado, Daisuke Iwaki, Kyohei Murayama, Masahiro Hirasawa

Author information

Keywords: indium, recovery, chlorination, indium tin oxide (ITO), ammonium chloride

JOURNAL FREE ACCESS

2011 Volume 52 Issue 8 Pages 1655-1660

DOI https://doi.org/10.2320/matertrans.M2011106

View "Advance Publication" version (June 29, 2011).

Details

Abstract

In the focus of selective recovery of indium from waste flat panel display, we have studied chlorination treatment where ammonium chloride, NH₄Cl, has been used as chlorination reagent. Glass plate on which ITO is deposited, denoted hereafter as ITO glass, has been employed as model sample. It was found that indium could be successfully recovered from ITO glass in the form of volatile indium chloride by heating the mixture of ITO and NH₄Cl at the temperature of 400°C under inert atmosphere. The influence of process parameters, such as treatment temperature, milling condition of ITO glass and composition of NH₄Cl, was investigated in order to achieve high process efficiency.

Corresponding author

Register with J-STAGE for free!