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1. (WO1983000508) TREATING MOLTEN ALUMINUM

Pub. No.:    WO/1983/000508    International Application No.:    PCT/US1982/001048
Publication Date: Fri Feb 18 00:59:59 CET 1983 International Filing Date: Tue Aug 03 01:59:59 CEST 1982
IPC: C22B 21/06
C22B 26/22
C22B 9/02
C22B 9/05
Applicants: ALUMINUM COMPANY OF AMERICA
Inventors: YU, Ho
Title: TREATING MOLTEN ALUMINUM
Abstract:
Molten metal, such as aluminum is passed through a media of submerged contacting surfaces (138). Operating life is enhanced by periodic cleaning of the contact media (138) by a high flow gas purge. Molten metal such as the light metals aluminum and magnesium containing finely divided suspended particles may also be treated to remove particles. The molten metal containing such suspended particles is moved through the medium of submerged contacting surfaces (138). The molten metal preferably is then passed through inclined channels or passages in contact with inclined surfaces such as parallel plates (144). Buoyant particles and agglomerates collect on the underside of the inclined surfaces (147).