Высокоглиноземистая проницаемая керамика для микро- и ультрафильтрации дисперсных систем

Abstract

As alternative to a traditional foamglass the made foam silicate material (Si-aero) which technology of receiving is developed in the Belarusian State Technological University can serve. Technological process of production of the granulated material with a bulk density of 100–200 kg/m3 (depending on the size of granules) includes stages: drying, mechanoactivation of initial raw materials; dispensing, mixture and hydration of components; receiving the hydrated polysilicates; product granulation; foaming at a temperature and classification of granules. Distinctive feature of material is overcoming of common fault of known foam materials: low chemical resistance to water, especially hot. Synthesized material is characterized by a significantly lower temperature of foaming. In this work the results of research of developed binder for ceramic membranes based on aluminum oxide. Using the developed binder allows to intensify the process of sintering of high alumina permeable ceramics, to obtain products having high performance permeability, mechanical strength, chemical resistance after sintering temperature 1350 °C.