HIGH-POROSITY CERAMIC MATERIAL REDOXIT USED AS A FILLER IN THE BIOLOGICAL FILTERS OF INTENSIVE BIOLOGICAL PURIFICATION SYSTEMS, AND METHOD FOR PRODUCING THE SAME

摘要

The present invention pertains to the building industry and to the protection of the environment and may be used as a building material or as a filler in the biological filters of systems for intensively purifying waste water, drinkable water and ventilation emissions of polluting substances. This invention more precisely relates to a high-porosity ceramic material named "Redoxite" that includes a formed and enriched clayish raw material comprising open pores on its surface as well as closed inner pores inside, said pores having a complex and rough developed surface. This material has a global porosity of up to 95 %, a volumetric density of up to 1250 kg/m3, a compressive strength of up to 22 Mpa, a thermal conductivity of up to 0.07 watts/(m.K) and a noise absorption capacity of up to 0.85. The method for producing the high-porosity ceramic material "Redoxite" involves preparing a plastic moulding of clay granules, drying the same, placing them layer by layer in moulds in the form of a strata and submitting the same to a thermal processing in order to ensure the swelling thereof.