Evaluation of Çorum Alpagut Waste Lignite Fines

The fine fraction having171.2 % -0.1mm particles in the Çorum Alpagut Lignite Mine of TurkishCoal Enterprises not only causes economical losses, but also is an important environmental hazardsource since this fraction is pumped and accumulated in the slime ponds around the region. Theamount collected in those ponds can be neither marketed nor removed away. Consequently, the finefraction problem in Çorum Alpagut Dodurga Lignite Mine appears to be the most importantdisadvantage for the plant. To overcome this problem, this fine fraction coal which comprises ofapproximately 20 % of the total washed coal, should be concentrated to obtain a marketable productwith acceptable calorific and ash values. For this purpose concentration experiments includingHumphrey Spiral and Shaking Table have been carried out with these fine fractions taken from thecyclones and thickener that are currently in operation in the coal washery of the plant. As a result ofthose studies, all the concentration methods have proved to be effective, producing a concentrate witha considerable calorific value increase and an acceptable ash percentage. The combustion kinetics andproperties of those fractions have also been determined by thermogravimetric methods and the resultsof the concentration studies have been supported with the combustion kinetic values of fractions andtheir products.
Physicochemical Problems of Mineral Processing


Comparison of Geochemical Properties of Surface Sediments in Mersin and İskenderun Bay NE Mediterranean
Akçay, İsmail; Tezcan, Devrim (2016-10-12)
In the present study, surface sediment samples were collected at 17 stations selected within the inner sites of Mersin and Iskenderun bays (including city harbors) to examine regional variations of heavy metals (Cr, Mn, Fe, Co, Ni, Cu, Zn), total/organic carbon (TC/TOC) and total nitrogen (TN) concentrations and grain -size distributions in less and highly contaminated sites. Though similar grain -size properties were observed, the surface sediments from the Mersin Harbor and nearby zone fed by wastewater r...
SOYUPAK, S; Gökçay, Celal Ferdi; YERLI, S; ERDEN, S; AKBAY, N; CILESIZ, AF (1994-03-01)
Water quality properties and trophic status of Keban Dam Reservoir have been assessed in detail. The dissolved oxygen contours exhibited somewhat unusual behaviour of temporarily established intermediate layers of low dissolved oxygen concentrations. The phytoplankton species were identified and their composition was evaluated. The reservoir is eutrophic in general terms. However, lotic and limnetic zones of the reservoir have shown different trophic status.
Assessment of CO2 Storage Potential in Turkey, Modeling and a Prefeasibility Study for Injection into an Oil Field
Okandan, Ender; Karakeçe, Yıldız; Cetin, Hayati; Topkaya, Ilhan; Parlaktuna, Mahmut; Akın, Serhat; Bülbül, Sevtaç; Dalha, Chantsalma; Anbar, Sultan; Cetinkaya, Ceyda; Ermis, Ismail; Yilmaz, Mustafa; Ustun, Volkan; Yapan, Kadri; Erten, A. Tayfun; Demiralin, Yasemin; Akalan, Ergun (2010-09-23)
The large amount of CO2 that can be mitigated by geologic storage had gained interest during the last 15 years. Acceptance of CCS under CDM is still under discussion(IEA, 2008) however there are several pilot or field scale projects and monitoring surveys that are underway which will make the technology better known and resolve the risks involved. This study involves assessment of possible geologic sites for CO2 storage and calculation of CO2 emissions from thermal power plants with capacities > 500 MWe, ce...
Estimation of Polymer Re-Gel Injection Time in Natural Fractured Reservoirs
Longinos, Sotirios; Soltanieh, Ashkan; Akın, Serhat (2018-06-22)
Hydrocarbon production is usually restricted by excess water production in naturally fractured reservoirs. Polymergel injection is an efficient method to shut-off fracture conduits in water bearing zones. Efficiency of water shut-offmay decrease in time due to several reasons. Well diagnostic methods such as recovery plot, production history plotand decline curve analysis can be used to identify necessity to re-gel the well. Both of the surveillance methods requiresome sort of analytical modeling and may no...
Evaluation of eutrophication control strategies for the Keban Dam reservoir
Soyupak, S; Mukhallalati, L; Yemisen, D; Bayar, A; Yurteri, C (1997-04-15)
The reservoir of the Keban Dam in eastern Anatolia is a very deep and large water body subject to significant seasonal water level fluctuations within a given hydrological year. At the present time, different sections of the reservoir have different trophic status and the upper portion of the reservoir, in particular, is eutrophic. In this regard, there is a need for the assessment of alternative strategies to be implemented for phosphorus and thus eutrophication control in this segment of the reservoir. In...
Citation Formats
N. E. Altun, “Evaluation of Çorum Alpagut Waste Lignite Fines,” Physicochemical Problems of Mineral Processing, pp. 171–180, 2001, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/83448.