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Structural characterization of kaolin from Djebel Debbagh Mine using Fourier Transform Infrared Spectroscopy (FTIR)

Author Affiliations

  • 1University of Tebessa, Mining and Geothechnolgy Department, Mining Laboratory, Algeria and University of Jijel, Process Engineering Department, LIME Laboratory, Algeria
  • 2University of Jijel, Process Engineering Department, LIME Laboratory, Algeria

Res. J. Material Sci., Volume 7, Issue (3), Pages 1-6, September,16 (2019)

Abstract

The structural organization level of kaolinite is a useful parameter in the kaolin industry, the determination of the crystallinity index can somehow give an idea about the use of kaolin in a well-defined industry. Kaolinite has a number of structural defects, the abundance of which makes it possible to define a scale of crystallinity. Thus, well crystallized kaolinites, medium crystallized kaolinites and poorly crystallized kaolinites are distinguished. The objective of this study is to determine the crystallinity degree for three samples of kaolin (DD1, DD2 and DD3) selected from Djebel Debbagh mine, located in Eastern Algeria. In order to obtain the results envisaged; the three samples were analyzed by Fourier Transform Infra-Red (FTIR) method. According to the obtained results; the three kaolins have poor crystallinity, since the ratio PO is greater than 1 and the ratio P2 is less than 1,especially for DD2 and DD3 where a total absence of the 3652 and 3669cm-1 vibration bands was observed. Even the kaolin DD1 has two light shoulders at 3662 and 3633cm-1, this sample remains poorly crystallized. In this study; it can be seen that the kaolin samples have a halloysite which is causing eventually this poor crystallinity and a poorly crystallized kaolinite also indicates the presence simultaneously of kaolinite and halloysite (mixed kaolin).

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