STIVT, FLERTRINNS FILTERMEDIUM FOR SMELTET METALL

摘要

A method of treating molten aluminum containing particles therein to remove the particles from the molten aluminum comprises passing molten aluminum through a first rigid filter media having a first surface to remove a fraction of the particles, collecting said particles on said first surface as filter cake, the particles capable of being removed from said surface by contacting the filter cake with gas bubbles, and passing said molten aluminum through a second rigid filter media to remove particles therefrom having a size generally smaller than the particles removed by the first media. An apparatus useful for filtering molten metal comprises a rigid coarse filter (30) and a rigid fine filter (40).