PROCEDIMENTO E DISPOSITIVO PER LA FABBRICAZIONE DI ELEMENTI FILTRANTI TUBOLARI MINERALI

摘要

"METHOD OF PRODUCING A TUBULAR FILTER ELEMENT HAVING HIGH PERMEABILITY" This invention relates to tubular filter elements formed from at least one thin coating of at least one metallic oxide and/or one metallic fluoride deposited on a ceramic or metallic support. The invention provides a method of producing such a filter element having both high permeability and very small pores which comprises the steps of bringing the inner and/or the outer wall of the support into contact with a liquid containing in suspension the mineral powder which is required to form the porous coating. The support is then drained and after drying the support is subjected to an isostatic compression and then heat treatment. '.