An experimental analysis of coal aluminium mixture in coal fired furnace



Coal is an important fuel used in boiler furnaces. There are problems like unburnt coal and solid wastes like ash contain arsenic, selenium, chromium and cadmium while using it. In order to avoid all such difficulties, aluminium metal powder in various grain sizes mixed with pulverized coal and burned. aluminium metal powder is one of the pyrotechnics having higher calorific value and low ignition temperature. The thermal behavior of aluminium powder along with coal is recorded in DTA. The collected ashes were tested in Scanning Electron Microscope and X-Ray Diffraction meter. The SEM results show that coal ash is having granular and regular structure. All the particles have a size range from 5 to 8 μm. On the other hand, the aluminium coal mixture ash shows a fibrous matrix and the particles are irregular. In XRD graph, the peaks in the graph show orientation of atoms in particular plane and angle. The coal ash has a lot of peaks, but the maximum count value reaches only to 340.97. However the value of counts reaches a maximum of 1,539.06 for aluminium ash. This denotes high atom orientation in a single lattice plane.


Aluminium metal powder Coal Combustion DSC SEM XRD 



A. Azhagurajan thanks Head, Department of Mechanical Engineering and Principal, Mepco Schlenk Engineering College for providing financial support to test the chemicals.


  1. 1.
    Special article, Metal powder hazards, LPA 4 (2004), 22.Google Scholar
  2. 2.
    Azhagurajan A. Enhancement of explosive property of nano scale pyro aluminium powder. In: Proceedings international conference on nano materials, MSEC. 2005. ISBN p. 383–87.Google Scholar
  3. 3.
    Ghosh KN. The principles of fireworks. In: Khastsuria H, editor.; 1987. p. 52.Google Scholar
  4. 4.
    Lakshmanan K. Chemistry of fire works. In: Proceedings national seminar on Fireworks Safety 99, MSEC: Vikas; 1999. p. 23.Google Scholar
  5. 5.
    Roth G. Performance of explosives, German patent; No. 1,733,271,900; 2000.Google Scholar
  6. 6.
    Maranda A. Research on the process of detonation of explosive of mixtures of the oxidizer fuel type containing aluminium powder. Propell Explos Pyrotech. 1990;15:161–65.CrossRefGoogle Scholar
  7. 7.
    Thomas K, Andreas H, Alois K. Influence of aluminium/ammonium perchlorate on the performance of underwater explosives. Propell Explos Pyrotech. 1999;24:140–43.CrossRefGoogle Scholar
  8. 8.
    Gharia JS, Athawale BK, Visal SR, Phadthare VV. Effect of aluminium particle size and percentage on blast compositions, Symposium on Warhead Technology, TBRL: Chandigarh; 1983. p. 144.Google Scholar
  9. 9.
    Stromose E, Eriksen SW. Performance of high explosives in underwater application, part 2: aluminised explosives. Propell Explos Pyrotech. 1990;15:52–53.CrossRefGoogle Scholar
  10. 10.
    Vinay P. Influence of alumnium on performance of HTPB-based aluminised PBXs. Def Sci J. 2004;4:475.Google Scholar
  11. 11. Nano aluminum powder for medium-caliber projectiles, accelerator or as a booster.
  12. 12.
    Mukunda HS. Understanding Combustion, Macmillan India Ltd; 1989. p 22.Google Scholar

Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2009

Authors and Affiliations

  1. 1.Mechanical Engineering DepartmentMepco Schlenk Engineering CollegeSivakasiIndia
  2. 2.Mechanical Engineering DepartmentMepco Schlenk Engineering CollegeSivakasiIndia

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