| 摘要 |
<p>Process for the preparation of a reinforced ceramic foam, showing modified surface properties, which is appropriate for capturing the slag and impurities in the filtration of metals, characterized by comprising the impregnation of an already existing ceramic foam or a freshly prepared ceramic foam according to conventional methods, in which, after the sinterization and cooling down, the impregnation is carried out under vacuum, by submersion in a colloidal solution of refractory oxide containing refractory powder, subsequently proceeding to dripping and drying out at a temperature comprised between 90 and 150 @C in an air flow dryer with subsequent sinterization at a temperature comprised between 1200 @C and 1600 @C during 5 hours and, after cooling down, a surface impregnation is carried out with a film-forming acrylic polymer, proceeding subsequently to its final drying.</p> |
