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https://hdl.handle.net/20.500.13091/5602
Title: | Cleaning of fine-grained lignite by two-stage hydrophobic flocculation using different waste oils | Authors: | Abdelraheem, Mohamed Taha Osman Agca, Osman Ağacayak, Tevfik Düzyol, Selma |
Keywords: | Coal cleaning lignite two-stage hydrophobic flocculation combustion recovery different waste oils contact angle Coal Agglomeration Flotation |
Publisher: | Taylor & Francis Inc | Abstract: | In this study, the conditions for obtaining clean coal from fine-grained lignite suspensions by two-stage hydrophobic flocculation using different waste oils were investigated. Waste vegetable oil, waste hydraulic oil and waste engine oil were chosen as bridging liquids for hydrophobic flocculation tests. During the studies, sodium silicate was used as the dispersant. Acetone was used at each stage to clean the floc obtained from the agglomeration process. The ash content (%) and combustible recoveries (CR, %) of the floc obtained at the end of each experiment were determined. In addition, contact angle (theta) and calorific values (kcal/kg) were measured and the results were evaluated in detail. At the end of the cleaning stages, low ash clean coal was obtained with a very high combustible recovery. In addition, it was observed that the calorific values increased considerably from 5128 to 5772,5558 to 6304 and 5447 to 5732 using waste vegetable oil, waste hydraulic oil and waste engine oil, respectively. | URI: | https://doi.org/10.1080/19392699.2024.2341950 https://hdl.handle.net/20.500.13091/5602 |
ISSN: | 1939-2699 1939-2702 |
Appears in Collections: | Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collections WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collections |
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