The Alcan compact degasser: A trough-based aluminum treatment process. Part 1: Metallurgical principles and performance
- Alcan International Ltd., Jonquiere, Quebec (Canada). Arvida Research and Development Centre
- Alcan Smelters and Chemicals Ltd., La Baie, Quebec (Canada)
In-line degassing processes, employing rotary gas injectors, are used extensively in the aluminum industry for removing unwanted impurities from the liquid metal just prior to casting. Although these processes are efficient, and provide the required level of metal treatment, a significant quantity of between one and three tons of metal is retained within the degassing unit between casts. Metal retention is a serious drawback for multi-alloy cast shops, due to the scrap metal produced by draining the degassing unit at alloy changes. The Alcan compact degasser is a new multi-stage in-line degassing process which treats the metal directly in the trough. Following the initial development period in the laboratory, about two years of process development and optimization in the plant has proven that the Alcan compact degasser provides metal treatment efficiencies equivalent to or better than existing technologies, while eliminating metal retention between casts. The metallurgical principles of this process are described and quantitative plant data are presented which characterize the metallurgical performance with respect to degassing, metal cleanliness, and alkali removal.
- OSTI ID:
- 372067
- Report Number(s):
- CONF-960202-; ISBN 0-87339-312-0; TRN: IM9641%%144
- Resource Relation:
- Conference: Annual meeting and exhibition of the Minerals, Metals and Materials Society (TMS), Anaheim, CA (United States), 4-8 Feb 1996; Other Information: PBD: 1996; Related Information: Is Part Of Light metals 1996; Hale, W. [ed.] [Anglesey Aluminum Metal Ltd., North Wales (United Kingdom)]; PB: 1304 p.
- Country of Publication:
- United States
- Language:
- English
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