ENRICHMENT OF SİVAS/GEMEREK LIGNITE COAL BY OIL AGGLOMERATION USING DIFFERENT VEGETABLE OILS

Year 2023, Issue: 054, 285 - 295, 30.09.2023

Özlem Kaya , Neriman Taşdöğen Cebe

https://doi.org/10.59313/jsr-a.1334096

Abstract

The aim of this study was to investigate the use of various vegetable oils (almond oil, hazelnut oil, poppy oil, soybean (soya) oil, sunflower oil) for Sivas/Gemerek (in Turkey) lignite coal by oil agglomeration. The study examined the effect of bridging liquid type and dosage on oil agglomeration. Vegetable oil dosages of 2%, 5%, 10% and 20% were investigated in oil agglomeration experiments. The agglomeration of lignite coal with these bridging liquids was evaluated based on yield, combustible recovery and ash rejection. The agglomeration performances of these vegetable oils were compared. The highest ash rejection (70.30%) was observed by using soybean (soya) at 20% of the bridging liquid dosage. The yield and combustible recovery of lignite coal were achieved 36.46% yield and 38.05% combustible recovery in this soybean (soya) oil dosage, respectively. The lignite coal ash content was reduced from 19.08% to 15.54% under these optimum conditions.

Keywords

Ash rejection, Combustible recovery, Lignite coal, Oil agglomeration, Vegetable oil, Yield

References

• [1] Laskowski, J.S. (2001). Coal Flotation and Fine Coal Utilization, Amsterdam. New York: Elsevier Science B.V.
• [2] Mehrotra, V.P., Sastry, K.V.S. and Morey, B.W. (1983). Review of oil agglomeration techniques for processing of fine coal. International Journal of Mineral Processing, 11, 175-201. https://doi.org/10.1016/0301-7516(83)90025-X [3] Drzymala, J. (2007). Mineral Processing, Foundations of theory and practice of minerallurgy, 1st English ed. Wroclaw, Poland: Wroclow University of Technology, 464-467.
• [4] Fan, C.W., Hu, Y.C., Markuszewski, R. and Wheelock, T.D. (1989). Role of induction time and other properties in the recovery of coal from aqueous suspensions by agglomeration with heptane. Energy&Fuels, 3(3), 376-381. https://doi.org/10.1021/ef00015a021
• [5] Alonso, M.I., Valdés, A.F., Martínez-Tarazona, R.M. and Garcia, A.B. (1999). Coal recovery from coal fines cleaning wastes by agglomeration with vegetable oils: Effects of oil type and concentration. Fuel, 78, 753-759. https://doi.org/10.1016/S0016-2361(98)00218-X
• [6] Asad, M., Toqeer, A., Javaid, A., Khurram, S., Naseer, S. and Shahid, M. (2016). Agglomeration of Makarwal coal using soybean oil as agglomerants. Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, 38 (24), 3733-3739. http://dx.doi.org/10.1080/15567036.2016.1141268 [7] Chakladar, S., Banerjee, R., Mohanty, A., Chakravarty, S. and Patar, P.K. (2022). Turpentine oil: a novel and natural bridging liquid for agglomeration of coal fines of high ash coals. International Journal of Coal Preparation and Utilization, 42 (7), 2028-2040. https://doi.org/10.1080/19392699.2020.1789976
• [8] Chary, G.H.V.C. and Dastidar, G. (2013). Comprehensive study of process parameters affecting oil agglomeration using vegetable oils. Fuel, 106, 285-292. https://doi.org/10.1016/j.fuel.2012.12.002
• [9] Garcia, A.B., Martinez-Tarazona, M.R. and Vega, J.M.G. (1996). Cleaning of Spanish high-rank coals by agglomeration with vegetable oils. Fuel, 75, 885-890. https://doi.org/10.1016/0016-2361(96)00012-9
• [10] Ken, B.S. and Nandi, B.K. (2019). Desulfurization of high sulfur Indian coal by oil agglomeration using Linseed oil. Powder Technology, 342, 690-697. https://doi.org/10.1016/j.powtec.2018.10.045
• [11] Malik, A., Singh, D.P., Sharma, S., Dastidar, M.G. and Roychoudhury, P.K. (1999). Oil agglomeration for recovery of coal fines: effect of vegetable oil and bacterial pretreatment. Coal Preparation, 20, 247-268. https://doi.org/10.1080/07349349908945603
• [12] Valdés, A.F. and Garcia, A.B. (2006). On the utilization of waste vegetable oils (WVO) as agglomerants to recover coal from coal fines cleaning wastes (CFCW). Fuel, 85(5-6), 607-614. https://doi.org/10.1016/j.fuel.2005.08.011
• [13] ASTM-3174 “Standard Test Method for Ash in the Analysis Sample of Coal and Coke from Coal”
• [14] Kaya, Ö. and Ari, M. (2020). Investigation of the factors affecting oil agglomeration using different reagent mixtures as a bridging liquid. International Journal of Coal Preparation and Utilization, 40 (7), 483-490. https://doi.org/10.1080/19392699.2019.1568999
• [15] Shukla, D. and Venugopal, R. (2019). Optimization of the process parameters for fine coal–oil agglomeration process using waste mustard oil. Powder Technology, 346, 316-325. https://doi.org/10.1016/j.powtec.2019.02.001