Thermodynamic evaluation of the Cu-Zr system and treatment of zirconium base alloy wastes by using molten copper

Toshiki Fukui*, Katsunori Yamaguchi, Young Cheol Song, Kimio Itagaki

*この研究の対応する著者

研究成果: Conference contribution

抄録

Molten copper dissolves a considerable amount of zirconium at medium temperatures around 1500K, providing a possibility to treat refractory zirconium base alloy wastes in nuclear reprocessing plants. In this study, based on the experimentally determined heat contents and liquidus or solidus temperatures along with some other published data, thermodynamic optimization was made for the Cu-Zr binary system to evaluate the thermodynamic properties and phase diagram of this system. Using the evaluated data, thermodynamic and heat balance calculations were made to look for the optimum conditions in the following three processes, which had been proposed by the authors to treat the zirconium base alloy wastes: (a) melting of the cladding hulls by alloying with the minimum quantity of molten copper, (b) recovery of zirconium from the wastes by selective chlorination of the molten Cu-Zr base alloy, and (c) elimination of radioactive elements in the zircalloy by selective oxidation of the molten Cu-Zr base alloy.

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2579-2588
ページ数10
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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