About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Rare Metal Extraction & Processing
|
| Presentation Title |
Rare and Critical Metals (In & Sn) Extraction from Discarded Display Devices |
| Author(s) |
Karina Rani, Rekha Panda, Ankur Sharma, Apurva Aditi, Balram Ambade, Manis Kumar Jha |
| On-Site Speaker (Planned) |
Karina Rani |
| Abstract Scope |
The growing use of electronic devices has intensified the challenge of managing electronic waste (e-waste) while depleting critical resources such as indium (In) and tin (Sn). These strategic metals, primarily used as indium tin oxide (ITO) in flat-panel displays, are scarce and essential for high-tech industries. Typical analysis indicates that Liquid Crystal Display (LCD) panels contain ~0.03% In & ~0.05% Sn. Apart from In/Sn other metals are ~0.76% Al and ~2.19% Fe. The methodology involves safe dismantling, mechanical shredding for size reduction, and subsequent hydrometallurgical extraction. Indium leaching was carried out using dilute H₂SO₄ at elevated temperature with a suitable pulp density to achieve ~98% recovery. This study presents a sustainable, scalable process for recovering In and Sn from discarded LCD panels which reduces e-waste impact and promotes a circular economy by reintroducing critical metals into the production loop, thereby reducing dependency on primary resources and enhancing sustainability. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Extraction and Processing, Hydrometallurgy, Recycling and Secondary Recovery |