Investigation of Appropriate Refractory Material for Laboratory Electritic Resistrance Furnance

There have been numerous efforts to increase the local content of furnaces; hence the choice of appropriate refractory material for lining of locally manufactured furnaces has remained a major concern. This research work investigates the choice of appropriate local refractory material for the lining of laboratory electric resistance furnace.Electric resistance furnaces are extensively used in the laboratory for heat treatment of metals and alloys. Refractory binders such as silicon carbide were experimented upon for strength and resistance to high temperature.The results obtained showed that Kankara fireclay containing 15% SiC ( 5.70 % linear shrinkage , 46.2% apparent porosity, 1.77gkm3 Bulk density, 18 cycles of spalling tests at 1300°C, 5.253KN/m2 of cold strength ) has appropriate properties for producing grooved bricks for lining of laboratory electric resistance Furnace.