Rheological Behaviour and Thermo-Mechanical Evaluation of Vitreous Sanitaryware Compositions Containing Fired Sanitary Scrap

摘要

Fired sanitary scrap after fine grinding has been incorporated in a standard vitreous sanitaryware body and the influence of its addition on the rheological and thermo-mechanical properties, vitrification behaviour and micro-structure has been investigated. The incorporation of 5-10 wt percent scrap resulted in about 8 percent increase in flexural strength, reduction in vitrification temperature by approx 30 deg C and broadening of vitrification range of body by 40 deg to 90 deg C. This has also resulted in significant improvement of rheological properties of the casting slip at a reduced electrolyte demand without altering the unfired strength of body mixes.