Indium tin oxide recycling from waste colour filter glass via thermal decomposition.

Clicks: 224
ID: 101135
2020
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Abstract
Thermal decomposition was used to enrich indium tin oxide (ITO) from waste colour filter glass. The colour layer was destroyed through oxidation, and the ITO layer was separated from the glass substrate. With the increase in the temperature and time of thermal decomposition, the yield of ITO concentrate decreased, but the ITO recovery and enrichment ratio increased. Furthermore, the ITO could be effectively enriched at 600 °C and 8 min, where the yield, recovery and enrichment ratio of ITO were 0.06 %, 98 % and 1669, respectively. The particle size distribution of the ITO concentrate was mainly distributed in 0.1-1.3 and 2.6-42.0 μm, with cumulative percentages of 4.33 % and 95.55 %, respectively. Moreover, the crystal structure of recycled ITO was not changed. Substantial poisonous and harmful mixed flue gas are produced during thermal decomposition. After condensation and adsorption by activated carbon, the emission of mixed flue gas could be effectively controlled to avoid serious pollution to the atmospheric environment.
Reference Key
wang2020indiumjournal Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Wang, Shuai;He, Yaqun;Feng, Yi;Zhang, Fengbin;Zhang, Tao;
Journal Journal of hazardous materials
Year 2020
DOI
S0304-3894(20)30492-1
URL
Keywords
recovery rate thermal decomposition indium tin oxide colour filter waste liquid crystal display

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