THE EFFECT OF COLLECTOR, FROTHER DOSAGE AND THEIR INTERACTION ON THE FLOTATION OF BOTTOM ASH BY FULL FACTORIAL DESIGN

Yıl 2016, Cilt: 17 Sayı: 3, 594 - 604, 03.10.2016

Derya Oz Aksoy

https://doi.org/10.18038/btda.45571

Cited By: 1

Öz

The effect of collector, frother dosage and their interaction on the flotation of bottom ash by full factorial design

Öz

Bottom ash samples taken from Mihaliccik-Cayirhan coal-fired power plant operated by Park Termik Company were used in this study. Combustible matter percentage in the samples is around 9 %. The aims of this study are to recover combustible matter in the bottom ash by flotation and to evaluate the usability of floatation tailings in the construction works by reducing the percentage of combustible matter less than 6%. Flotation experiments were designed with full factorial design to investigate the effect of collector and frother dosage on the recovery of combustible matter. In this study, statistical experimental design methods were utilized in the flotation works, and therefore, the effects of collector and frother dosages on the ash and unburned carbon contents were not only modeled, but the interaction between these factors were also determined in the unburned carbon floatation. Two models obtained at this study were found to be significant statistically. The results have shown that there is an interaction between collector and frother dosages in the floatation selectivity (in the ash content), whereas this interaction was found to be insignificant statistically at the selected parameter levels for this sample in the case of unburned carbon recovery.

Anahtar Kelimeler

Flotation, Bottom ash, Unburned carbon recovery, Experimental design

Kaynakça

• Koç E, Şenel MC. Dünyada ve Türkiye’de Enerji Durumu - Genel Değerlendirme. Mühendis ve Makina 2013; 639: 32-44.
• European Environment Agency. Projected percentage change in per capita electricity consumption from 2004 to 2030. 2009; http://www.eea.europa.eu/data-and-maps/figures/projected-percentage- change-in-per-capita-electricity-consumption-from-2004-to-2030 (Online) Accessed on: 31.07.2016.
• Society for Mining, Metallurgy&Exploration. Coal’s Importance in the US and Global Energy Supply. 2012; http://www.smenet.org/about-sme/government-affairs/advocacy/technical-briefing- papers/coal-s-importance-in-the-us-and-global-energy-supp (Online) Accessed on : 31.07.2016.
• Kizgut S, Cuhadaroglu D, Samanli S. Stirred Grinding of Coal Bottom Ash to Be Evaluated as a Cement Additive. Energy Sources, Part A: Recovery, Utilization, and Environmental Effects 2010; 32: 1529-1539.
• Ozmen E. Termik santrallerden kaynaklanan küllerin yönetimi. Atık Yönetimi Sempozyumu 2011, Antalya, Turkey.
• Sahbaz O, Oteyaka B, Kelebek S, Ucar A, Demir U. Separation of unburned carbonaceous matter in bottom ash using Jameson cell. Separation and Purification Technology 2008; 62: 103–109.
• Ucar R, Koca S, Oz D, Koca H. Concentration of Unburned Carbon from Seyitomer Power Plant Bottom Ashes. 12th Balkan Mineral Processing Congress 2014, Delphi, Greece.
• Trifunovic PD, Marinkovic SR, Tokalic RD, Matijasevic SD. The effect of the content of unburned carbon in bottom ash on its applicability for road construction. Thermochimica Acta 2010; 498: 1-6.
• Kurama H, Kaya M. Usage of coal combustion bottom ash in concrete mixture. Construction and Building Materials 2007; 22: 1922–1928.
• Ucurum M, Toraman OY, Depci T, Yogurtcuoglu E. A study on characterization and use of flotation to separate unburned carbon in bottom ash from Cayirhan Power Plant. Energy Sources, Part A: Recovery, Utilization, and Environmental Effects 2010; 27: 562-574.
• Butcher K. Integrated Coal Ash Processing Plant Business Feasibility Study. Land of Sky Regional Council, North Carolina, US, 2007.
• Um NI , Ahn JW, Han GC, Lee SJ, Kim HS, Cho H. Flotation process in coal bottom ash and their effect on the removal of unburned carbon. Geosystem Engineering 2008; 11:4, 75-80.
• Yamik A, Dogruoz A. Recovery of unburned carbon by conventional flotation of bottom ashes from Tuncbilek Thermal Power Plant. The Journal of the Southern African Institute of Mining and Metallurgy 2008; 108: 171-177.
• Oz D, Koca S, Koca H. Recycling of Coal Combustion Wastes. Waste Management and Research 2009; 108:3, 267-273.
• Arenas CG, Marrero M, Leiva C, Solis-Guzman J, Arenas LF. High fire resistance in blocks containing coal combustion fly ashes and bottom ash. Waste Management 2011; 31: 1783-1789.
• Montgomery DC. Design and analysis of experiments. Singapore: John Wiley &Sons; 1991.
• Naik P, Reddy P, Misra V. Optimization of coal flotation using statistical technique. Fuel Process 2004;85:1473–85.
• Naik P, Reddy PSR, Misra V. Interpretation of interaction effects and optimization of reagent dosages for fine coal flotation. Int J Miner Process 2005;75:83–90.
• Azizi D, Gharabaghi M, Saeedi N, Optimization of the coal flotation procedure using the Plackett- Burman design methodology and kinetic analysis. Fuel Processing Technology. 2012. 128; 111-118.
• Naik P, Reddy P. Effect of sodium metasilicate on natural flotability of coal. Colloid and Polymer Science. 2006. 284; 1024-1030.
• Oz Aksoy D, Aytar P, Toptaş Y, Çabuk A, Koca S, Koca H. Physical and physicochemical cleaning of lignite and the effect of cleaning on biodesulfurization. Fuel. 2014. 132; 158-164.
• Dashti A, Nasab E. Optimization of the performance of the hydrodynamic parameters on the flotation performance of coarse coal particles using design expert (DX8) software. Fuel. 2012. 107; 593- 600.
• Xia W, Yang J, Zhu B. Flotation of oxidized coal dry-ground with collector. Powder Technology. 2012. 228; 324-326.
• Polat M, Polat H, Chander S. Physical and chemical interactions in coal flotation. Int J Miner Process 2003;72:199–213.
• Liu J, Mak T, Zhou Z, Xu Z. Fundamental study of reactive oily-bubble flotation. Miner Eng 2002;15:667–76.
• ASTM D3174-12 Standard Test Method for Ash in the Analysis Sample of Coal and Coke from Coal, ASTM International, West Conshohocken, PA, 2012.