| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Rare Metal Extraction & Processing
|
| Presentation Title |
A Novel Process for Indium Recovery from Waste Liquid Crystal Displays (LCDs) by Selective Sulfuration-Volatilization |
| Author(s) |
Zijian Su, Mingqiang He, Xiaoning Hu, Yuanbo Zhang |
| On-Site Speaker (Planned) |
Mingqiang He |
| Abstract Scope |
Indium is a crucial material in photovoltaics, liquid crystal displays (LCDs), and semiconductors because of its excellent optical properties and conductivity. Due to its scarcity, indium often recovers from waste materials such as LCDs, ITO targets, and photovoltaic modules. The traditional hydrometallurgical process of recycling waste LCDs has been long and produced many liquid wastes. A novel method of selective sulfuration-volatilization had been developed, which involved the roasting of the material with ferrous sulfide in a controlled atmosphere of CO and CO2. Indium was found to be enriched in the volatiles, in which indium tin oxide and indium tin sulfide were the principal forms, with particle sizes between 120 and 250 nm. Under optimal conditions, the recovery of indium is 93.51%. |
| Proceedings Inclusion? |
Planned: |