Akademik Veri Yönetim Sistemi
Madencilik, cilt.53, sa.1-2, ss.39-44, 2014 (Scopus)
In this study, synthetic wollastonite (CaSiO3) production by using a mixture of marble industry waste sludge powders and quartz powders which were mechanically activated via intensive milling at the same time was emphasized. It has been intended to reveal the interaction between the behaviour of mixture of marble and quartz powders during roasting and intensive milling in the synthetic wollastonite production process. In order to observe the behaviour of marble powder and quartz powder mixture at the end of intensive milling, milling tests were performed individually and as mixture by using a jet ball mill. Structural and thermal specifications of non-milled and milled mixtures were defined. The foot prints of wollastonite formed by roasting process at various temperatures in the range of 900°-1200°C were searched for within the mixtures and the temperature at which the CaCO3 and SiO2 in the mixture entirely convert to CaSiO3 is determined. Synthetically produced wollastonite and natural wollastonite were added to the ceramic tile formula and tablets acquired were fired at different temperatures in the range of 1000°-1200°C. The specifications enabled to the ceramic material by synthetic and natural wollastonite were compared via running various physical, chemical, thermal and mechanical tests on tablets produced at the end of firing. In conclusion, it has been revealed that the process of mechanical activation of the mixture of marble powder and quartz powder via intensive milling prior to the roasting process, lowers the temperature at which wollastonite is formed, and provides favourable post-firing contributions to the ceramic tile sludge.