Optimization of fritting parameters of ceramic frits: effect on the rheological behaviour of the glaze suspensions

Studies to optimize the preparation parameters used in industrial frits are reported. Two frit compositions widely used for the production of single-fired ceramic-glazes were chosen: an alkaline boric and an earth-alkaline boric composition. The chemical durability and rheological behavior of the frit suspensions were studied in relation to changes in the fritting temperature and time. The results confirm that the two frits studied react differently to changes in fritting parameters due to the dependence on their chemical durability and composition. Suspensions prepared with the alkaline-boric frit displayed no significant change in their rheological properties; the earth-alkaline-boric frit suspensions were more markedly affected.