Seramik saglık gereçleri üretiminde ergitici olarak nefelinli siyenit

Abstract

The largest fields of consumption of nepheline syenite are the glass and ceramic industries. Its not containing free silica, containing high alkali and alumina, high melting power, and narrow melting range are ideal characteristics for the glass industry. Its field of use in various branches of the industry and the largest reserves of this valuable raw material whose quantity is rapidly increasing are found in Russia, Canada, Norway, Brazil, China, and Turkey. Its mining in Turkey is done in the Akpınar region of Kırşehir. As a result of nepheline syenite being seen as an expensive raw material other than its being accustomed to in terms of industrialists in Turkey, it is being consumed at low quantities. It has also been seen that scientific studies in an academic sense about this raw material, which has not been shown sufficient interest, are limited. In this work, the influences of nepheline syenite in Kırşehir (Turkey) on ceramic body properties were investigated. Samples of nepheline syenite were collected from the Akpınar deposit in Kırşehir. Nepheline syenite samples in different sizes were used instead of sodium feldspar in sanitary ware. Five different compositions were obtained by using nepheline syenite. Shrinkage, colour, water absorption, strength and deformation measurements of all samples were determined. The vitrification behaviour of sanitary ware bodies was evaluated using an thermogravimetric and differential scanning calorimetry (DSC/TGA), mineralogical and phase analysis of samples were analyzed by X-ray diffraction (XRD), microstructure analysis were analyzed by scanning electron microscope (SEM).