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成果報告書詳細
管理番号20180000000074
タイトル*平成29年度中間年報 高効率な資源循環システムを構築するためのリサイクル技術の研究開発事業
公開日2018/6/26
報告書年度2017 - 2017
委託先名国立研究開発法人産業技術総合研究所 大栄環境株式会社 佐藤鉄工株式会社 株式会社リーテム DOWAエコシステム株式会社 株式会社三徳 国立研究開発法人日本原子力研究開発機構 国立大学法人京都大学 国立大学法人大阪大学 国立大学法人佐賀大学
プロジェクト番号P17001
部署名環境部
和文要約
英文要約Title:Research and development of the recycling technology to construct high efficiency resources circulation system (FY2017-FY2019) Annual Report

Research item 1
Computer programs based on the deep-learning technology of image recognition were developed to attain automatic sorting for three kinds of small digital appliances. And, a discrete-element method (DEM) simulator using 3D scanned electronic device assembly was developed to design a novel single-item feeder for the automatic sorting. To examine the concrete methods of disassembling small digital appliances, a set of test apparatus composed of seven types machineries for weak point formation, a force impressing machinery, and a board separation machinery was developed. A sorting system for module parts after disassembling was also developed.

Research item 2
It was developed that a test apparatus specially designed as 14 main factors which are alterable to examine the efficiency of electric parts detachment from a board by the method of experimental design. An analytical apparatus with X-ray camera and post image processing was also developed for qualitative assessment of these detachments. For the particle motion prediction system of a drum magnetic, a "parameter tuning" function that estimates particle properties was added to this system. Fundamental performance of a Knelson concentrator was investigated to study a new fine particle separator. A case-based criticality assessment and demand forecast of minor metals were developed to explore the recycling targets. And, the product stock-flow models were also developed for 15 type small household appliances. We began developing a recycling supply chain model and collected data to quantify this model.

Research item 3
A new monochrometer which enables rapid energy scan of the synchrotron radiation was introduced in SPring-8, in order to observe structural changes in metal complexes in the chemical reaction process. The EXAFS results suggest that two types of structures are present in each of Nd- and Sm-MePhPTA complex and an additional ligand reacts with either of two different structures in both Nd and Sm. As for the solvent extraction, we have synthesized three kinds of extractants, and a PTA-type extractants showed that the maximum value of the extraction efficiency appeared at around Sm. In the adsorption study, we have synthesized ten kinds of adsorbents, the PTA-type adsorbent having a phenyl group has the maximum adsorption ratio at Eu-Gd.
In a metal recycling using molten salt, first, Ni-based commercial alloys were electrolyzed in molten chloride or fluoride baths under the presence of REE ion sources and it was confirmed that REE-Ni alloy could be formed under an appropriate conditions. Second, the impurity contents of wasted magnet scraps were measured. The measurement indicated that the oxygen content in the scrap is high and that oxygen is one of the important elements to be removed.
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