Extraction of valuable metals from incineration metal residue in molten state

Katsunori Yamaguchi*, Yoichi Takeda

*この研究の対応する著者

研究成果: Conference contribution

抄録

Amount of metal residue from incinerators or melting furnaces of incinerator bottom ash has been increased in Japan. The metal residue contains valuable metals such as copper, silver and gold. Main components of the metal residue are copper, phosphorus, silicon and iron of the remainder. Copper content is 5 to 20% and too low to recover the valuable metals in a conventional copper smelter, so a new approach to upgrading the valuable metals with phase separation in molten metal system was researched. Whereas the binary melt of iron and copper is miscible over all composition, the addition of carbon or phosphorus to the binary melt leads to phase separation between an iron phase and a copper phase. The copper phase absorbing the precious metals is feasible for refining in a conventional copper smelter. Fundamental information about the phase separation, recovery of copper and distribution ratio of the valuable metals are presented.

本文言語English
ホスト出版物のタイトルREWAS'04 - Global Symposium on Recycling, Waste Treatment and Clean Technology - Proceedings
編集者I. Gaballah, B. Mishra, R. Solozabal, M. Tanaka
ページ1629-1636
ページ数8
出版ステータスPublished - 2005 12 1
外部発表はい
イベントREWAS'04 - Global Symposium on Recycling, Waste Treatment and Clean Technology - Madrid, Spain
継続期間: 2004 9 262004 9 29

出版物シリーズ

名前REWAS'04 - Global Symposium on Recycling, Waste Treatment and Clean Technology

Conference

ConferenceREWAS'04 - Global Symposium on Recycling, Waste Treatment and Clean Technology
国/地域Spain
CityMadrid
Period04/9/2604/9/29

ASJC Scopus subject areas

  • 工学(全般)

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