Processing aluminum skim

摘要

The invention relates to an efficient, salt-free method of recovering metallic aluminum from furnace skim wherein the skim is tumbled for a short period in a rotary furnace at a temperature between 1200 DEG and 1500 DEG F (649 DEG -816 DEG C) to separate the molten aluminum from the oxide portion of the skim. Preferably, after molten aluminum is drained from the rotary furnace, the spent skim is rapidly cooled by adding a relatively cool pebbly or granular material to facilitate the discharge and disposal thereof.