Beneficiation and recovery of indium from liquid-crystal-display glass by hydrometallurgy
Copyright © 2016 Elsevier Ltd. All rights reserved.
| Veröffentlicht in: | Waste management (New York, N.Y.). - 1999. - 57(2016) vom: 05. Nov., Seite 207-214 |
|---|---|
| 1. Verfasser: | |
| Weitere Verfasser: | , , |
| Format: | Online-Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2016
|
| Zugriff auf das übergeordnete Werk: | Waste management (New York, N.Y.) |
| Schlagworte: | Journal Article Indium recovery Indium–tin–oxide LCD recycling Recycling Waste management Plastics Indium 045A6V3VFX Hydrogen Peroxide |
| Zusammenfassung: | Copyright © 2016 Elsevier Ltd. All rights reserved. Considering indium scarcity, the end-of-life (EOL) LCD, which accounts for up to 90% of market share can be a feasible secondary resource upon successful recycling. In the preferred hydrometallurgical process of such critical metals, leaching is the essential primary and essential phase has been investigated. In this process, LCD was mechanically separated along with other parts from EOL TVs through a smartly engineered process developed at our institute, Institute for Advanced Engineering (IAE), the Republic of Korea. After removing plastics and metals from the LCD, it was mechanically shredded for size reduction. The mechanically shredded LCD waste was leached with HCl for recovery of indium. Possible leaching parameters such as; effect of acid concentration, pulp density, temperature and effect of oxidant H2O2 concentration were investigated to identify the best conditions for indium extraction. Indium (76.16×10-3g/L) and tin (10.24×10-3g/L) leaching was achieved at their optimum condition, i.e. lixiviant of 5M HCl, a pulp density of 500g/L, temperature 75°C, agitation speed of 400rpm and time for 120min. At optimum condition the glass, plastic and the valuable metal indium have completely been separated. From indium enriched leach liquor, indium can be purified and recovered through hydrometallurgy |
|---|---|
| Beschreibung: | Date Completed 24.04.2017 Date Revised 24.04.2017 published: Print-Electronic Citation Status MEDLINE |
| ISSN: | 1879-2456 |
| DOI: | 10.1016/j.wasman.2016.02.019 |