Geleneksel seramik üretiminde pencere camı atıklarının değerlendirilmesi
Recycling of waste glasses in the production of conventional ceramics
- Tez No: 129096
- Danışmanlar: YRD. DOÇ. DR. RECEP ARTIR
- Tez Türü: Yüksek Lisans
- Konular: Metalurji Mühendisliği, Metallurgical Engineering
- Anahtar Kelimeler: seramik, porselen
- Yıl: 2002
- Dil: Türkçe
- Üniversite: Sakarya Üniversitesi
- Enstitü: Fen Bilimleri Enstitüsü
- Ana Bilim Dalı: Metalurji ve Malzeme Mühendisliği Ana Bilim Dalı
- Bilim Dalı: Belirtilmemiş.
- Sayfa Sayısı: 162
Özet
ÖZET
Özet (Çeviri)
RECYCLING OF WASTE GLASSES IN THE PRODUCTION OF CONVENTIONAL CERAMICS SUMMARY Key words : ceramics, porcelain The main aim of this study is to investigate the usage of waste window glasses in the production of porcelain traditional ceramics. Second one is to reduce the fabrication cost of porcelain. Because feldspar is a relatively expensive raw material due to it's high hardness (Mohs 6-6.5) requiring longer grinding time. Waste window glasses and kaolinite were milled and mixed followed by dry pressing the body mixture to produce cylindrical ceramic specimens. Composition of specimens are ranging 30-60 % kaolinite and 30-60 % waste glass. After pressing specimens were dried at 1 10 °C and sintered at various temperatures from 1 150 up to 1250 °C for one hour. Characterization of samples was performed including electrical resistivity, compressive strength, firing shrinkage, weight loss, bulk density, porosity and water absorption techniques. In the first chapter, ceramics are mentioned in general their raw materials, production methods are given. In the second chapter, porcelains, their raw materials shaping and production methods are explained. In the third chapter, glass production and physical and chemical properties of glasses are given together with recycling of glass wastes. In the fourth chapter, compositions used in this study and their shaping, firing and other experimental techniques employed are explained. In the fifth chapter, experimental results and their related graphs are given. In the sixth chapter, all the experimental results are discussed. Results showed that waste glass added porcelain samples could be sintered at low temperatures. Very similar properties were obtained, such as lower water absorption and very low porosity comparing with commercial porcelain and vitrified ceramic bodies. Firing shrinkage and weight loss values were both increased with raising firing temperatures for all compositions as expected due to glassy phase formation leading to densification on firing. According to microstructure examination and XRD analysis dominant phases detected were cristobalite, müllite, anortite, augite and albite. Compressive strength was decreased whereas electrical resistivity values increased because of glassy phase increase in the microstructure. Promising results were obtained by the production of waste glass added conventional ceramic bodies which indicated that it could be used for the production of some porcelain body formulation. vm
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