Niğde Ömer Halisdemir Üniversitesi Mühendislik Bilimleri Dergisi

Yazarlar: Nezahat EDİZ, Sevgi KARACA, Oktay ŞAHPAZ, İsmail Göktay EDİZ, Ali UÇAR

Konular:Mühendislik

DOI:10.28948/ngumuh.826789

Anahtar Kelimeler:Characterization,Coal,Slime pond

Özet: In this research, some characterization studies were carried on the samples taken from the waste ponds of Western Lignite Company (WLC) in order to define utilization possibilities and prevent environmental problems of these materials. During the investigation, particle size distribution, physical and chemical properties (elemental analysis, humidity and sulphur content and calorific value) as well as mineralogical and thermal properties of the materials from the waste ponds called Number-4, Beke Yörgüç and 6/C were determined. From the elemental analysis of waste materials made both on the original samples and on the materials below 0.038 mm, it was understood that major oxides were comprised of SiO2, Al2O3, Fe2O3, CaO, MgO, K2O and SO3. The ash content of the waste materials was found to be 68.01%, 62.73% and 59.71% for the waste ponds of Number-4, Beke Yörgüç and 6/C, respectively. Mineralogical analysis made showed that both the original samples and the materials below 0.038 mm were comprised of minerals such as quarts, muscovite/illite, montmorillonite, kristobalite, gypsum, kaolinite. DTA-TG analysis also proved that combustion reactions of the organic matters were occurred at 200-400°C while sulphur within the coal was removed at the temperatures of 690-750°C.

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