Determination of Permeability for Refractories: From Standard Test Methods to Improved Interpretation Technique of the Experimental Data
1 RWTH Aachen University, Institute of Mineral Engineering, 52070 Aachen/Germany
2 Université d\'Orléans, CEMHTI CNRS UPR 3079, 45071 Orléans/France
Revision 02.05.2017, 18.08.2017
Volume 9, Issue 4, Pages 113 - 116
Abstract
Transport properties of refractory materials are required to predict the infiltration behavior in contact with corrosive species. For this reason, the determination of permeability values needs to be accurate and inherent to the material, independently from the experimental conditions. The present paper introduces a methodology, used in the field of geology and transposed in this case to refractory samples, in order to obtain reliable intrinsic permeability values. In the first part, this approach is applied to a data set obtained with a permeameter in atmospheric mode as described in the standards. The corrected flow regime plot contributes to select the measurements performed in Darcy flow regime, to further yield the intrinsic permeability with a Klinkenberg plot. In the second part an improved equipment with backpressure mode enables to extend this approach to refractories with low permeability, when Darcy flow conditions cannot be reached in atmospheric mode. The values obtained from the corrected flow regime plot were compared with the ones yield by Klinkenberg plot to ensure the reliability of this method.
Keywords
permeability, refractories, Darcy flow regime, Klinkenberg plot
References
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