In this study, the sintering behaviour and densifications of chamotte refractories that were produced by incorporation of 4140 precision casting sand waste at different ratios are investigated. Thermal properties are examined using thermogravimetry and differential scanning calorimetry thermal analysis methods. Open porosities and densities of refractories have been determined using Archimedes principles according to ASTM C20. The chemical analysis of raw material and phase analysis of refractories, and also chamotte raw material and sintered chamotte material at 1723 K, are obtained by X-ray fluorescence and X-ray diffraction, respectively. In addition, the changes in microstructure are characterized using a scanning electron microscope. According to the results, chamotte refractory that was produced by 10% 4140 precision casting sand waste has the highest density and lowest open porosity due to the smallest grain size after sintering compared with those of pure (C0) refractory and chamotte refractory with the addition of 20% 4140 precision casting sand waste.
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Bahtli, T., Bostanci, V.M. Effect of precision casting sand waste of 4140 steel on the sintering and densification behaviour of chamotte refractories. J Therm Anal Calorim (2020). https://doi.org/10.1007/s10973-020-09956-6
- Precision casting sand
- Thermal analysis