Ceramic, pressed or extruded materials used für cleaning liquid casting materials.
This is the most universal and flexible method to remoce impurities from the melt. Another effect is that the melt flow is effectively calmed and surface oxidation due to turbulences is minimized (see Casting filter).
For air purification and dust removal filters see Dedusting and Extraction equipment.
Fig. 1:Filter, (Foseco Foundry Division Vesuvius GmbH)