Towards an On-line Characterisation of Kaolin Calcination Process Using Short-Wave Infrared Spectroscopy

Adriana Guatame Garcia, Mike Buxton, Fiorenza Deon, Caroline Lievens, Chris Hecker

Research output: Contribution to journalArticleScientificpeer-review

5 Citations (Scopus)
73 Downloads (Pure)


In the production of calcined kaolin, the on-line monitoring of the calcination reaction is becoming more relevant for the generation of optimal products. In this context, this study aimed to assess the suitability of using infrared (IR) spectroscopy as a potential technique for the on-line characterization of the
calcination of kaolin. The transformation of kaolin samples calcined at different temperatures were characterized in the short-wave (SWIR) spectra using the kaolinite crystallinity (Kx) index and the depth of the water spectral feature (1900D). A high correlation between the standard operational procedure
for the quality control of calcined kaolin and the Kx index was observed (r = -0.89), as well as with the 1900D parameter (r = -0.96). This study offers a new conceptual approach to the use of SWIR spectroscopy for the characterization the calcination of kaolin, withdrawing the need of using extensive laboratory techniques.
Original languageEnglish
Number of pages12
JournalMineral Processing and Extractive Metallurgy Review
Issue number6
Publication statusPublished - 2 May 2018


  • kaolinite
  • metakaolinite
  • gamma-alumina
  • calcined kaolin
  • SWIR-MWIR-LWIR spectroscopy
  • Process control

Fingerprint Dive into the research topics of 'Towards an On-line Characterisation of Kaolin Calcination Process Using Short-Wave Infrared Spectroscopy'. Together they form a unique fingerprint.

  • Research Output

    • 5 Citations
    • 1 Article
    Open Access
  • 2 Citations (Scopus)
    19 Downloads (Pure)

    Cite this