• Published Papers
  • Open Access
  • Studies on Synthesis and Characterization of Magnesia Based Refractory Aggregates Developed from Indian Magnesite
  • DOI: 10.4236/msce.2014.210001   PP.1 - 8, Pub. Date: October 28 , 2014
  • Author(s)
  • Manas Kamal Haldar, Chandrima Ghosh, Arup Ghosh
  • ABSTRACT
  • The present work intends to study the properties of magnesia based refractory aggregates developed from Indian magnesite by changing lime/silica ratio. The material has been sintered in the temperature range of 1550C - 1700C. The sintered samples are characterized in terms of bulk density, apparent porosity, true density, percentage densification, mechanical, thermo-mechanical properties like cold modulus of rupture, hot modulus of rupture and thermal shock resistance and structural properties by XRD. The developed microstructures at different temperatures are studied through FESEM study and compositional analysis of the developed phases is done by EDX study.

  • KEYWORDS
  • Sintering, Magnesite, Microstructure, Thermo-Mechanical Properties, Refractories
  • References
  • [1] Serry, M.A., Hammad, S.M. and Zawrah, M.F.M. (1997) Densification and Microstructure of Refractory Periclase Grains. Interceram, 46, 430-435.

    [2] Lee, W.E. and Rainforth, W.M. (1994) Ceramic Microstructures Property Control by Processing. Chapman & Hall, UK.

    [3] Steijn, R.P. (1963) Sliding and Wear in Ionic Crystals. Journal of Applied Physics, 34, 419-428. http://dx.doi.org/10.1063/1.1702624

    [4] Staut, R. (1972) Effects of the Lime-Silica Ratio on the Physical Properties of Magnesia-Chrome Ore Composition. Journal of the American Ceramic Society, 51, 901-905.

    [5] Young, R.A. (1993) The Rietveld Method. Oxford University Press.

    [6] De la Torre, A.G., Valle, F.J. and De Aza, A.H. (2006) Direct Mineralogical Composition of a MgO-C Refractory Material Obtained by Rietveld Methodology. Journal of the European Ceramic Society, 26, 2587-2592. http://dx.doi.org/10.1016/j.jeurceramsoc.2005.05.005

    [7] Rigby, G.R. (1970) Mechanical Properties of Basic Bricks I. A Survey of the Magnesia-Chrome System. Transactions and Journal of the British Ceramic Society, 69, 189-198.

    [8] Timoshenko, S. (1934) Theory of Elasticity. McGraw-Hill Book Co, Inc, New York.

    [9] Chaudhuri, M., Kumar, A., Bhadra, A.K. and Banerjee, G. (1990) Sintering and Grain Growth in Indian Magnesites Doped with Titanium Dioxide. Interceram, 39, 26-30.

    [10] Lampropoulou, P.G. and Katagas, C.G. (2005) Composition of Periclase & Calcium-Silicate Phases in Magnesia Refractories Derived from Natural Microcrystalline Magnesite. Journal of the American Ceramic Society, 88, 1568-1574. http://dx.doi.org/10.1111/j.1551-2916.2005.00263.x


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