Process for obtaining calcined diatomiticos highly permeable filtering agents free of cristobalite, and thus obtained filtering agents.

摘要

Calcining Diatomite is carried out within a gas stream SPIRAL HIGH TEMPERATURE IN WHICH REMAINS IN SUPPORTING A RING OF BALLS REFRACTORIAS, RING WITHIN WHICH IS CONDUCTED calcining and bussel CONTROLLED PARTICLE diatomitic. Amorphous silica structure is conserved: are obtained very permeable screening agents practically free cristobalite.