Thermal conductivity of a kaolinite refractory: effect of a plant-derived organic binder

The effect of corchorus olitorius derived binder on the effective thermal conductivity of a kaolinite-based refractory was investigated. Strong dependence of (effective) thermal conductivity of fired samples on the binder concentration, temperature and porosity was noted. Comparison of experimental...

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Bibliographic Details
Published in:Journal of materials science 2003-06, Vol.38 (11), p.2293-2297
Main Authors: OGACHO, A. A, ADUDA, B. O, NYONGESA, F. W
Format: Article
Language:English
Subjects:
Applied sciences
Building materials. Ceramics. Glasses
Chemical industry and chemicals
Dependence
Effective medium theory
Exact sciences and technology
Heat conductivity
Heat transfer
Kaolinite
Materials science
Porosity
Refractory materials
Refractory products
Silica-alumina refractories
Thermal conductivity
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Summary:The effect of corchorus olitorius derived binder on the effective thermal conductivity of a kaolinite-based refractory was investigated. Strong dependence of (effective) thermal conductivity of fired samples on the binder concentration, temperature and porosity was noted. Comparison of experimental data with Effective Medium Approximation (EMA) and Geometric Mean Model (GMM) theories showed that predictions from EMA agreed better with the experimental data than those from GMM. This was attributed to the EMA model being more rigorous and contained more microstructural information than the simpler GMM.
ISSN:0022-2461
1573-4803
DOI:10.1023/A:1023916009846