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Color effects in ceramic glazes play a decisive role in the aesthetic and attractiveness of ceramic pieces. The colorants used in glazes interact with the ceramic materials during the firing process, resulting in a wide range of fascinating colors and effects. Due to the natural properties of basalt such as high compressive strength and wear resistance, this natural volcanic rock is attracting a lot of attention when used in ceramic production processes. The aim of this study is to evaluate the effects of basalt cutting waste (BCW) obtained from a stone company in Kayseri, Turkey, on the color effect of ceramic glazes in combination with different frits. For this purpose, glazes were prepared in which BCW was incorporated in different weight percentages of 0-20 % together with different frits. The glazes were characterized by analyzing chemical, phase, and thermal behavior of BCW using X-ray fluorescence (XRF), X-ray diffraction (XRD), and thermal microscopy, respectively. The prepared glazes were then applied to engobed wall tiles and fired at a temperature of 1,200 °C in a laboratory furnace. After firing, the glazed surfaces were subjected to color analysis, while the phase composition was analyzed by XRD. The microstructure analysis was carried out using electron microscopy (SEM/EDS). Increasing the proportion of BCW in the glaze compositions resulted in a change of the color of the finished surfaces from cream to yellow-beige tones. This study sheds light on the potential use of BCW as a coloring agent in the production of ceramic glazes.

The ceramic industry holds a considerable position in Turkey's economy, with our country emerging as a frontrunner in the manufacturing of ceramic coating materials and sanitaryware. Pottery products form another distinct branch of ceramic production. The disposal of defective products in the industry leads to the generation of waste, causing environmental pollution and presenting challenges in terms of storage and disposal. Considering the substantial volume of waste produced, it becomes imperative to explore diverse avenues for the effective utilization of the sector's waste. The mechanical properties of geopolymer mortars produced by using ceramic tile factory filter-press cake, sanitaryware, and pottery wastes with and without fly ash with different activators were examined in this study. The mortar mixtures with a liquid/binder ratio of 0.40, incorporating NaOH and Na2SiO3, were subjected to thermal curing at 90°C for 24 hours. 7 and 28-day flexural and compressive strength tests were applied to the samples. The flexural strengths of mortars produced with Na2SiO3 for 28 days were found to be in the range of 4.4 MPa-11 MPa, while those produced with NaOH ranged from 3.4 to 7.6 MPa. The compressive strengths of ceramic waste binary mixtures and fly ash ternary mixtures surpassed values of 30 MPa. The study demonstrates that ceramic industry wastes can be effectively employed in geopolymer production. [ABSTRACT FROM AUTHOR]

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In this study, the usability of pumice, which is an abundant raw material in Nevşehir (Turkey), in glaze compositions prepared for vitrified products with increasing production capacity was investigated. For this purpose, different glazes containing micronized pumice were prepared by using the Seger formula for the quartz, kaolin and feldspar amounts in the glaze raw materials. The results were evaluated by applying industrial standard tests in a sanitaryware company (Turkuaz Ceramic Company, Kayseri). Glazes were applied to fire clay bodies and fired in an industrial firing regime at temperatures ranging from 1200-1250°C. In addition, grain size analysis, physical glaze flow length and thermal expansion test were applied to the glaze samples. Glazed surfaces containing micronized pumice were characterized by color parameters CIELab, Harkort test and stain resistance tests. Measurement by scanning electron microscopy (SEM/EDS) and X-ray diffraction (XRD) showed that zircon and quartz crystals were formed. The micronized pumice provided the necessary silica to react with the zircon particles forming homogeneously dispersed zircon crystals. Zircon crystals also increased the whiteness of the glaze. It has been concluded that it is possible to use micronized pumice in vitrified glaze compositions in ceramic sanitaryware glazes without compromising their sustainable technical properties. [ABSTRACT FROM AUTHOR]

Copyright of International Journal of Engineering Research & Development (IJERAD) is the property of International Journal of Engineering Research & Development and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)