Abstract
The physico-chemical characterization of three samples of clay used in Nabeul (TUNISIA) ceramic industry are studied by some methods: chemical analysis, X-ray diffraction, infrared spectroscopy, differential thermal and thermogravimetry analysis, dilatometry, measurement of surface areas and cation exchange capacities. The samples are kaolino-illitic clay, but they differ in cristallinity and in the rate of quartz and iron. A quantitative estimation of the ratio kaolinite/illite by three methods (X-ray diffraction, infrared spectroscopy, differential thermal analysis) are proposed. Mittels chemischer Analyse, Rontgendiffraktion, IR-Spektroskopie, DTA und TG, Dilatometrie, Oberflachenmessungen und Messungen der Kationenaustauschkapazitat wurde eine physikalisch-chemische Charakterisierung dreier Proben von Ton vorgenommen, wie sie in der Keramikindustrie von Nabeul (Tunesien) verwendet werden. Bei den Proben handelt es sich um kaolino-illitischen Ton, sie unterscheiden sich jedoch in Kristallinitat und im Quarz- und Eisengehalt. Es wird eine quantitative Schatzung des Verhaltnisses Kaolinit/Illit mit Hilfe von drei Methoden (Rontgendiffraktion, IR-Spektroskopie, DTA) vorgeschlagen.
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