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Ugheoke, B. I., Onche, E. O., Namessan, O. N. and Asikpo, G. A., (2006): Property Optimization of Kaolin - Rice Husk Insulating Fire – Bricks, Leonardo Electronic Journal of Practices and Technologies, Issue 9, July-December 2006,p. 167-178 http://lejpt.academicdirect.org accessed on-line 23^rd June, 2008.

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• TITLE: Development of Insulating Refractory Ramming Mass from Some Nigerian Refractory Raw Materials

  AUTHORS: O. A. Olasupo, J. O. Borode

  KEYWORDS: Insulating Refractory, Nigerian Refractory Raw Materials

  JOURNAL NAME: Journal of Minerals and Materials Characterization and Engineering, Vol.8 No.9, September 20, 2009

  ABSTRACT: Insulating refractory ramming mass was developed from suitable Nigerian refractory raw materials. Rammed samples from several ratios of clay, silica, mica, bentonite and calcium aluminate cement (Durax) were prepared using the American Foundrymen Society (AFS) standard rammer. They were thereafter tested for such properties as apparent porosity, volumetric firing shrinkage, cold compression strength, green compression strength, loss on ignition, thermal shock resistance and refractoriness. Results indicate that eight ramming cycles were just enough for the production of the ramming masses. Two optimal ratios obtained from the experiments have a refractoriness of 1500℃ , good compression strength and excellent thermal shock resistance. They are therefore recommended for lining of rotary furnaces and crucible furnaces for the melting of ferrous and non-ferrous alloys. It could be concluded that the ramming mass serve as a viable alternative to foreign ramming mass at the same temperature application.