GEOCHEMICAL AND REFRACTORY PROPERTIES OF EGBAHIEME CLAY IN KOGI STATE, NIGERIA

I. T. Ojonimi, O. Aponbiede, F. Asuke

Abstract


The geochemical and refractory properties of Egbahieme clay deposit in Kogi State, Nigeria were investigated. The objectives of the research were to determine the suitability of the clay for refractory applications and ceramics manufacturing. The geochemistry was carried out using X-ray Florescence (X-RF) method while the refractory properties were determined based on ASTM/AFS standards. The chemical analysis revealed that Egbahieme clay principally contains silica and alumina mixtures of 56.10 % and 21.96 % respectively which classified it as semi-silica refractory. Other oxide impurities were also found in the clay at various low values. The results of physical properties obtained were; plasticity (23.1 %), linear firing shrinkage (4.937 %), apparent porosity (25.24 %), bulk density (1.64 g/cm3), cold crushing strength (9.25 MPa). Other properties obtained include; thermal shock resistance (22 cycles), refractoriness (1500 oC). From these results it can be concluded that Egbahieme clay is a potential raw materials for refractory furnace linings and ceramics manufacturing.

 

Keywords: Geochemical, Refractory, Clay, Egbahieme


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