The molten material flows through a filter medium for the purpose of separation of slags, sand particles or other oxidic impurities (s. Casting filter).

Purification of used air, exhaust air, and dust-carrying hot gasses in industrial plants in accordance with emission laws and other statutory rules and regulations for keeping air clean is also referred to as filtering (s. Dedusting).

Fig. 1:Filtering, (Foseco Foundry Division Vesuvius GmbH)

  • Fig. 1: Filtering, (Foseco Foundry Division Vesuvius GmbH)