- Characteristics of Indium Dissolution of Waste LCD Panel Powders Fabricated by High Energy Ball Milling (HEBM) Process with Milling Time
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Hyo-Seob Kim, Jun-Je Sung, Cheol-Hee Lee, Hyun-Seon Hong, Soon-Jik Hong
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J Korean Powder Metall Inst. 2011;18(4):378-384.
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DOI: https://doi.org/10.4150/KPMI.2011.18.4.378
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- In this research, the indium dissolution properties of the waste LCD panel powders were investigated as a function of milling time fabricated by high-energy ball milling (HEBM) process. The particle morphology of waste LCD panel powders changed from sharp and irregular shape of initial cullet to spherical shape with an increase in milling time. The particle size quickly decreased to 15 µm until the first minute, then decreased gradually about 6 µm with presence of agglomerated particles after 5 minutes, which increased gradually reaching a uniform size of 13 µm consist of agglomerated particles after 30 minutes. The glass recovery, after dissolution, was over 99% at initial cullet, which decreased to 90.1 and 78.6% with increasing milling time of 1 and 30 minute respectively, due to a loss in remaining powder of the surface ball and jar, as well as the filter paper. The dissolution amount of indium out of the initial cullet was 208 ppm before milling, turning into 223 ppm for the mechanically milled powder after 1 minute, and nearly 146~125 ppm with further increase in milling time because of the reaction surface decrease of powders due to agglomeration. With this process, maximum dissolving indium amount (223 ppm) could be achieved at a particle size of 15 µm with 1 minute of milling.
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Citations
Citations to this article as recorded by  - Indium ion cementation onto aluminum plates in hydrochloric acid solutions: a kinetic perspective
Hyun Seon Hong, Geon Hong Kim, Myung Hwan Hong, Sungkyu Lee, Jae-Chun Lee
International Journal of Materials Research.2014; 105(2): 177. CrossRef - The Effect of Milling Conditions for Dissolution Efficiency of Valuable Metals from PDP Waste Panels
Hyo-Seob Kim, Chan-Mi Kim, Chul-Hee Lee, Sung-Kyu Lee, Hyun-Seon Hong, Jar-Myung Koo, Soon-Jik Hong
Journal of Korean Powder Metallurgy Institute.2013; 20(2): 107. CrossRef
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