Resource Recovery of Valuable and Hazardous Metals from Ceramic Scraps

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  • Sasai Ryo
    Division of Environmental Research, EcoTopia Science Institute, Nagoya University
  • Itoh Hideaki
    Division of Environmental Research, EcoTopia Science Institute, Nagoya University

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Other Title
  • 無機系廃棄物のリサイクルと資源回収　　セラミックス廃材からの有価および有害金属の資源回収
  • セラミックスハイザイ カラ ノ ユウカ オヨビ ユウガイ キンゾク ノ シゲン カイシュウ

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Abstract

Due to its dependence on importing most valuable metal resources from foreign countries, the depletion of metal resources is a serious problem in Japan. The ceramic industry is well known to expend much of various metal resources. Although engineering developments for cutting back on consumption and waste of metal resources and fossil fuel have been energetically conducted, the recycling of ceramics scraps has not been fully introduced in the manufacturing process. The reason for this is that pulverization, decomposition, and chemical modification cost a great amount, and use huge amounts of energy to attain the high mechanical and chemical stability of ceramic materials. We have developed technological innovations for decreasing energy consumption and costs to recover resources from ceramic scrap materials. This paper reviews the recycling process for ceramic scraps, and introduces our work on the recycling of ceramic powder and valuable/hazardous metals from ceramic wastes.

Journal

  • Waste Management Research

    Waste Management Research 15 (4), 168-174, 2004

    Japan Society of Material Cycles and Waste Management

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