Process for producing ceramic shaped bodies, in particular porosified light-weight vertically perforated bricks, and ceramic shaped bodies

摘要

In a process for producing ceramic shaped bodies, in particular porosified light-weight vertically perforated bricks, the clay-like raw composition has at least one aggregate mixed into it prior to drying and firing. To obtain a highly thermally insulating porosified shaped body, a homogeneously prepared recycled material of used kieselguhr employed as filter aid is used as aggregate. Alternatively or additionally, a homogeneously prepared recycled material of used deep-bed filter layers from beverage and food filtration is used as aggregate. In addition, a homogeneously prepared recycled material from paper sacks containing residual kieselguhr is additionally used as a further aggregate.