This disclosure relates to vacuum degassing and particularly to apparatus which uses multiple degassing vessels whereby, when one vessel is in position for degassing molten metal, the other vessel or vessels are in position for relining or preheating. The vessels are supported above ground level by a rotatable support means which carries the vessels in a circular path between the degassing zone where a vessel may be selectively lowered into and raised out of a ladle of molten metal, then to a maintenance, repair, and reheat zone where a vessel may be relined and/or preheated.
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