Global Substance Flow Analysis of Indium

作者: Akihiro Yoshimura , Ichiro Daigo , Yasunari Matsuno

DOI: 10.2320/MATERTRANS.M2012279

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摘要: Interest in recycling of rare metals has greatly increased recently because the rapid growth demand for, and uneven distribution of, natural resources. Substance flow analysis (SFA) is a useful tool for determining substances specific geographic regions. However, few SFAs have been conducted metals. In this paper, we focus on indium conduct both Japan globally. Indium primarily used as tin oxide (ITO), whose end uses can be categorized into two groups: liquid crystal displays plasma panel displays; these are then assembled final products. We quantified during its life cycle through mining, smelting refining, manufacturing, use waste management. For data were collected content ore production primary metallic 1999­2008. estimated products, input ITO Japan. Then, extrapolated result to an SFA at global scale. In-use stock discarded by dynamic SFA, which time-series products their lifetime used. considered loss each process potential recyclable amount. found that extraction rate refining was 8­11%, 4,826 t 2004. The manufacturing amounted 316 t, in-use 116 end-use 5 globally Therefore, it concluded biggest recovery refining. [doi:10.2320/matertrans.M2012279]

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