Recycling of the waste waters into porcelainized stoneware ceramic tiles: effect on the rheological, thermal and aesthetical properties

The importance of the porcelainized stoneware production, this product reached the 36% (218.106 m2) of the total Italian production in the last year, and the impossibility to reuse both the ceramic residues and the process waste waters with the similar practice developed previously for the other typologies have brought to find new solutions to applied at this kind of wastes. The aim of the work is to evaluate the possibility to recycle waste waters, deriving from different technological ceramic cycles, inside the porcelainized stoneware body. The use of these waters does not change the parameters of the productive cycle, obtaining a final product with the similar quality and aesthetic characteristics required from the market and avoiding a possible spilling of the waste water after purification in sewers or in superficial river courses.