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J. Jpn. Inst. Met. 63(3) 279.pdf652.53 kBPDFView/Open
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Title: 塩化物-フッ化物混合溶融塩処理によるアルミニウムドロスからのアルミニウム合金の回収
Other Titles: Recovery of Aluminum Alloy from Aluminum Dross by Treatment of Chloride-Fluoride Mixture Melt
Authors: 上田, 幹人1 Browse this author →KAKEN DB
雨宮, 睦仁2 Browse this author
石川, 達雄3 Browse this author
大塚, 俊明4 Browse this author
Authors(alt): Ueda, Mikito1
Amemiya, Mutsuhito2
Ishikawa, Tatsuo3
Ohtsuka, Toshiaki4
Keywords: aluminum dross
molten salt
chloride-fluoride melts
separation technique
Issue Date: 1-Mar-1999
Publisher: 日本金属学会
Journal Title: 日本金属学会誌
Journal Title(alt): Journal of the Japan Institute of Metals
Volume: 63
Issue: 3
Start Page: 279
End Page: 283
Publisher DOI: 10.2320/jinstmet1952.63.3_279
Abstract: A new process for recovery of aluminum from aluminum dross was developed. The aluminum dross which is obtained as a by-product during casting process of aluminum alloy contains aluminum alloy and oxides of various metals including aluminum oxide. The process consists of two stages: (1) Separation of the aluminum alloy from the oxides by difference in density between the alloy and the oxide in molten salts. (2) Dissolution of oxides into molten salts, and electrolysis of the molten salts to form metallic aluminum from the oxide. This paper is concerned with the first stage for the separation of the aluminum alloy from the oxides by using BaCl2-NaCl-NaF melts. The aluminum alloy completely separates from the oxides in the melts at concentrations of BaCl2 higher than 33.3 mol%, in which the liquid aluminum alloy floats up and the oxides sink down. From a 30 g dross sample, amount of about 24 g of aluminum alloy has been recovered. The remaining oxides contains aluminum oxide, silicon oxide, magnesium oxide and iron oxide. From the aluminum oxide dissolved in the melt, metallic aluminum is formed by electrolysis in a subsequent stage.
Type: article
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 上田 幹人

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