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http://dx.doi.org/10.7844/kirr.2018.27.5.61

A Study of Recycling Process to Recovery Valuable Resources from Aluminum Black Dross  

Kang, Yubin (Institute for Advanced Engineering (IAE))
Im, Byoungyong (Institute for Advanced Engineering (IAE))
Kim, Dae-Guen (Institute for Advanced Engineering (IAE))
Lee, Chan Gi (Institute for Advanced Engineering (IAE))
Ahn, Byung-Doo (DS LIQUID Co., LTD.)
Kim, Yong Hwan (Korea Institute of Industrial Technology (KITEC))
Lee, Man Seung (Mokpo National University)
Publication Information
Resources Recycling / v.27, no.5, 2018 , pp. 61-68 More about this Journal
Abstract
The aluminum dross is oxide generated on the surface of the molten metal during the aluminum melting process and it is divided into white dross and black dross according to presence of the Salt flux. White dross has high metal content and is recycled via the melting process. Black dross is largely berried, because the it has a low metal content and difficulty in separating the components. Black dross contains a salt components such as NaCl and KCl, and inorganic materials such as $Al_2O_3$ and MgO, and it is necessary to study the technology to recover and recycle such valuable resources. In this study, a process for recycling aluminum black dross was proposed. The inorganic and soluble substances present in the black dross were separated through crushing-dissolution-solid/liquid separation-decompression evaporating. By controlling the ratio of water and black dross, the recovery condition of the separated product was optimized and we confirmed the highest Salt flux recovery efficiency 91 wt.% at black dross:water ratio 1:9. Finally, Through the synthesis of zeolite using recovered ceramic material, the materialization possibility of black dross was confirmed.
Keywords
Aluminum; Black dross; Recycling; Filter Press; Zeolite;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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