Yazar "Temel, H. Abakay" seçeneğine göre listele

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    An Assessment of Malatya-Arguvan Lignite and Southeastern Anatolia Region Lignites (Turkey)
    (Taylor & Francis Inc, 2015) Temel, H. Abakay; Majumder, A. K.; Bakir, Y.
    Turkish lignites are usually low in heating value and burning characteristic with high sulfur and ash content. They are unable to conform to air protection regulation requirements if burned as mined. Generally, they are used in power plants causing environmental problems. In this study, assessment possibilities of Malatya-Arguvan lignite are investigated and washability properties of Eastern and Southeastern Anatolia region lignites are discussed. For this purpose, experimental studies were performed with lignite samples taken from a lignite field in Malatya-Arguvan, Turkey. First, proximate analysis of lignite samples was made. Afterwards, washability properties of lignite samples were determined. Assessment of the washability properties was made by calculating some of the popular indices, such as index of washability, washability number, and near gravity material index, and the obtained results were presented.
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    An Investigation of Evaluation Possibilities of Mus-Elmakaya Lignite
    (Taylor & Francis Inc, 2011) Ayhan, M.; Ayhan, F. D.; Temel, H. Abakay
    Lignite is the most important source of energy in Turkey. Turkish lignite is usually low in heating value and burning characteristic with high sulfur and ash content. They are unable to conform to air protection regulation requirements if burned as mined. Generally, they are used in power plants causing environmental problems. In this study, evaluation possibilities of Mus-Elmakaya lignite are investigated. For this purpose, experimental studies were performed with lignite samples taken from a lignite field in Mus-Elmakaya, Turkey. First, petrographic analysis, major element analysis, and proximate analysis of lignite samples were done. Afterwards, washability properties of lignite samples were determined. Evaluation of the washability properties was done by using washability number, calorific value, and sulfur content of the clean coal obtained from float-sink tests and the obtained results were presented.
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    Investigation of the Effects of Various Bridging Liquid Types on Deashing of a Lignite Sample by Selective Oil Agglomeration
    (Taylor & Francis Inc, 2013) Ozturk, F. D.; Temel, H. Abakay
    The aim of this study was to investigate the effects of various bridging liquid types on deashing of Mu-Elmakaya lignite by the agglomeration method. Experimental studies were conducted on the lignite sample with ash, sulfur, volatile matter, and fixed carbon contents of 39.15, 5.12, 47.19, and 13.66%, respectively. For this purpose, four vegetable oils (olive oil, canola oil, corn oil, and hazelnut oil), kerosene, MolyFlo, diesel oil, 50% diesel oil plus 50% fuel oil, and 50% kerosene plus 50% fuel oil were used in the experiments. The effects of solid concentration, bridging liquid type and dosage, and pH on the agglomeration were investigated. Agglomeration results showed that the usage of vegetable oils in the agglomeration medium had a positive effect on the reduction of ash content of agglomerates. It was found that an agglomerate product containing 27.30% ash was obtained from a feed that contained 39.15% ash when canola oil was used in the agglomeration.
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    Öğe
    Reverse Flotation in Mu-Elmakaya Lignite Beneficiation
    (Taylor & Francis Inc, 2013) Ozturk, F. D.; Temel, H. Abakay
    The aim of this study was to investigate the possibility of cleaning Mu-Elmakaya lignite by the reverse flotation method. Experimental studies were conducted on Mu-Elmakaya lignite samples containing high ash and sulfur content. Preliminary flotation studies showed that gangue minerals were floated instead of the lignite sample in the flotation medium. For this purpose, the effects of some parameters that markedly influence the effectiveness of reverse flotation, such as grinding time, solid concentration, pH, collector type and amount, depressant amount, and frother amount on the reverse flotation, were investigated. Flotation results showed that while a clean coal assaying 29.04% ash with combustible yield of 78.14% could be obtained in the usage of Aero 3477 as the ionic collector, a clean coal assaying 27.40% ash with a higher combustible yield of 81.19% could be obtained in the usage of kerosene as the conventional collector.