Murat Olgaç KANGAL, Mustafa ÖZER, Fırat BURAT, Soner AKIN

Evaluation of Thrace Region fine coal tailings

The 79.9% of lignites in Turkey possesses a calorific value lower than 2500 kcal/kg. In order to reduce the energy dependence of the country, it would be right to evaluate these lignite reserves of 11.8 billion tons by effective coal preparation methods and use them with clean coal combustion systems together with developing technology. A typical coal preparation plant produces material within a ratio of 20% of the feed coal below 0.5 mm. Generally, due to the high cost, the gain of the fugitive coal in the product under this size is not preferred but this size group can be utilized owing to the developing coal cleaning technologies. Within scope of this study, the discarded coal slime below 0.5 mm size taken from the Uysal Mining Co. in Tekirdağ was subjected to the enrichment and dewatering processes to obtain a marketable product. In experimental studies, the slime with 81,25% ash content in 150 micron size group was removed from the system in order to produce a high quality product. Afterwards, the coal having 49.09% ash content was subjected to multistage Reichert Spiral tests and a clean coal product with 24,1% ash content was produced. In settling experiments, the product below 150 microns was used and at the end of these tests, the slurry with 30% solid in pulp ratio was produced. It can be concluded that the clean coal, which is produced after enrichment tests, could be used in energy sector, power plants, briquetting plants, cement plants etc.

Keywords:

Lignite, tailings, Reichert spiral, dewatering,

PDF

___

Aslan, N., Canbazoglu, Ulusoy, M. ve Yeniçubuk U. 1999. Gemerek linyit kömürlerinin MGS ile yikanabilirliginin araştirilmasi, Türkiye 16. Madencilik Kongresi ve Sergisi, Ankara, pp.321-326.
Ateşok, G. 2009. Kömür Hazırlama ve Teknolojisi, Yurt Madenciliğini Geliştirme Vakfı Yayınları, İstanbul, 376p.
Ateşok, G. ve Kangal, M.O. 2011. Susuzlandırma ve Kurutma, YMGV Yayınları, İstanbul, 125p.
Baştürkcü, H. and Acarkan, N. 2011. Removal of sulfur from coal with Falcon concentrator, Proceedings of XIV Balkan Mineral Processing Congress, Bosnia 14-16 June, pp.363-368.
BGR Report. 2016. Federal Institute for Geosciences and Natural Resources. Reserves, Resources and Availability of Energy Resources, Hannover, 88p.
British Petroleum, 2012. Statistical Review of World Energy, 48p. Ford, M. and Fleming, R., 2002. Mechanical Solid-Liquid Separation of Livestock Manure, Ridgetown College - University of Guelph.
Gallego-Juárez, J.A., Elvira-Segura, L. and Rodrı́guez-Corral, G. 2003. A Power Ultrasonic technology for deliquoring, ultrasonics, 41, pp.255-259.
Honaker R. Q. 1995. Enhanced gravity separators: New alternatives for fine coal cleaning, Proceedings 12th International Coal Preparation Conference, Intertec Inc., Lexington, Kentuck, pp.282-292.
Honaker, R. Q., Wang, D. and Ho, K. 1996. Application of the Falcon concentrator for fine coal cleaning, Minerals Engineering 9, 11, pp.1143-1156.
Keller, K. and Stahl, W. 1997. Vibration screens for dewatering-Theory and practice. Minerals and Metallurgical Processing pp.27-34.
Önal, G. 1994. Cevher ve kömür hazırlamanın ülkemiz madenciliği açısından önemi, Kömür kalitesinin iyileştirilmesi, kömür kullanımı, kömür zenginleştirme tesislerinin kurulması, işletimi ve denetimi – Meslek İçi Eğitim Semineri, İstanbul.
Parekh, B. K., Abdel Khalek, M. A. 2002. Using a Falcon concentrator, as a new technology, for removal of environmental pollutants of Egyptian coal / Mısır kömürlerinden çevreyi kirleten bileşenlerin uzaklaştırılması için Falcon zenginleştiricisi kullanımı”, Ore Dressing/Cevher Hazırlama 7, pp.20-28.
Sharpe, M.A. 2007. Coal Preparation: A Discussion on Conventional and Advanced Technology, Coal Preparation Workshop, India.
TKİ. 2016. 2015 Kömür (Linyit) Sektör Raporu, Türkiye Kömür İşletmeleri Genel Müdürlüğü, Ankara, 90p.

ISSN: 0026-4563
Yayın Aralığı: Yılda 3 Sayı
Başlangıç: 1950
Yayıncı: Cahit DÖNMEZ

Arşiv