Interceram - International Ceramic Review

, Volume 66, Issue 7, pp 53–57 | Cite as

Non-Isothermal Reaction Kinetics Study of MgO-C Refractories with Added Low-Ash Consent Graphite

  • S. K. NandyEmail author
  • G. C. Das
Special Technologies


Magnesia-carbon (MgO-C) is widely used in metallurgical furnaces due to its excellent slag thermal shock and corrosion resistance properties. Carbon is non-wettable by slag, which protects MgO, but oxidises in the presence of oxygen. An experiment was undertaken to investigate the oxidation resistance of MgO-C in non-isothermal conditions through evaluation of kinetic laws. MgO-C samples with 2,8% ash content graphite and resin binder were prepared and their oxidation behaviour with respect to weight loss was determined in a specially designed furnace. Samples were fired from 700 to 1400°C at heating rates of 3, 5, 7 and 9 K per minute. Their continuous weight loss was measured at 50 K intervals. In order to find the mechanism(s) associated with oxidation of MgO-C samples, a reduced time ‘∅’ plot analysis was carried out for the samples. For all temperatures and samples, the initial oxidation mechanism was observed to obeya chemical reaction-controlled second order chemical mechanism followed by diffusion processes at higher temperatures.


magnesia-carbon oxidation kinetics reduced time plot analysis 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. [1]
    Yamaguchi, A., Kun, Y.J.: Formation and expansion of open pore in carbon containing refractories and their prevention. Taika Overseas 14 (1994) [8] 20–25Google Scholar
  2. [2]
    Basu Mallick, A.: Study on in-situ reduction kinetics of transition metal chlorides in silica gel matrix. Thesis submitted for the degree of Doctor of Philosophy (Engineering) of Jadavpur University (1997)Google Scholar
  3. [3]
    Das, G.C., Basumallick, A., Biswas, K., Mukherjee, S.: Isothermal in situ reduction kinetic analysis of NiCl2-containing gel. Bull. Mater. Sc. 16 (1993) 317–324.CrossRefGoogle Scholar
  4. [4]
    Li, X., Rigaud, M., Palco, S.: Oxidation kinetics of graphite phase in magnesia-carbon refractories. J. Am. Ceram. Soc. 78 (1995) [4] 965–971CrossRefGoogle Scholar

Copyright information

© Springer Fachmedien Wiesbaden GmbH, part of Springer Nature 2017

Authors and Affiliations

  1. 1.R & D Centre for Iron & Steel (Steel Authority of India Ltd.) DorandaRanchi-834002, JharkhandIndia
  2. 2.Department of Metallurgical & Material EngineeringJadavpur UniversityKolkata-700032, West BengalIndia

Personalised recommendations