沈殿法および溶媒抽出法を用いた廃光学ガラスからの希土類元素成分の分離回収 Recovery of Rare Earth from Waste Optical Glass by Precipitation and Solvent Extraction

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Optical glass is the raw material for optical lens, which is used for optical equipment such as camera or facsimile. It includes a large quantity of rare earth elements for improving its optical characteristics. Therefore, because of its composition, the wastes of optical glass have a high value of resources. However, their recycling is considered to be a difficult process.<BR>In this study, recovery of rare earth from two types of optical glass wastes (sample A and sample B) was investigated by means of alkali fusion and oxalate precipitation for sample A ,and alkali leach and solvent extraction for sample B.<BR>Regarding to the experimental results of sample A, the grade of 83.4 % and the recovery of 71.1 % for lanthanum are achieved from waste optical glass by alkali fusion with an equivalent mixture of the fusing agent of sodium carbonate and potassium carbonate, and precipitation with ammonium oxalate.<BR>Regarding to the experimental results of sample B, the distribution of 99.95 % La, 98.65 % Y and 95.18 % Gd from waste optical glass is achieved by alkali leaching followed by sodium hydroxide and solvent extraction with D2EHPA.

収録刊行物

  • 資源と素材 : 資源・素材学会誌 : journal of the Mining and Materials Processing Institute of Japan

    資源と素材 : 資源・素材学会誌 : journal of the Mining and Materials Processing Institute of Japan 119(10), 668-674, 2003-11-25

    一般社団法人 資源・素材学会

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各種コード

  • NII論文ID(NAID)
    10012540297
  • NII書誌ID(NCID)
    AN10062646
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    09161740
  • NDL 記事登録ID
    6774980
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z17-315
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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