Preparation of ceramic foam from porcelanite by using simple direct foaming method

Abstract

Ceramics filters should be porous the porous contain large amount of air cells. This work has been carried out for the purpose of preparing and studying Iraqi ceramic Foam. Simple and non-expensive method (direct foaming method) invariant friend, invariant friend filter since it makes from natural and raw materials. By using Iraqi raw material (Porcelanite) and white egg (ovalbumin) as a binder and a foaming agent during the foaming process. Preparing an Porcelanite particle sizes were less than (≤63) μm, then mixed with white egg (ovalbumin) in ratios between (31.60-73.50) %. Porosity, water absorption ratio, permeability, thermal conductivity, and flexural strength were obtained after sintering the specimens at (1100)°C. The prepared Porcelanite foam contained a large number of irregular shape microspores; it has high porosity (55.33-78.90) %, high water absorption ratio (35-59.5) %, high permeability (2.50-4.70) cm/min and low thermal conductivity (0.42-0.20) W/m.K. with flexural strength range (3-0.55) MPa. The direct foaming method by using white egg (without water) foam, proved to be an efficient and feasible method for producing highly porous ceramics with good mechanical properties for Ceramics filter applications. Temperature manufacturing processes.