Characterizations of the kaolin analyzed by terahertz time-domain spectroscopy

Caiqin Liu; Meihui Yang; Zili Zhang; Zhiyuan Zheng; Haochong Huang

doi:10.1117/12.2601928

31 August 2021 Characterizations of the kaolin analyzed by terahertz time-domain spectroscopy

Caiqin Liu, Meihui Yang, Zili Zhang, Zhiyuan Zheng, Haochong Huang

Author Affiliations +

Proceedings Volume 11907, Sixteenth National Conference on Laser Technology and Optoelectronics; 119070R (2021) https://doi.org/10.1117/12.2601928
Event: Sixteenth National Conference on Laser Technology and Optoelectronics, 2021, Shanghai, China

Abstract

The mineral composition of kaolin is mainly composed of kaolinite, which was widely used in the production of ceramics and refractory materials. In this paper, terahertz time-domain spectroscopy is used to study the optical properties of kaolinite group clay minerals and the absorption coefficient and refractive index of calcined kaolin, washed kaolin and metakaolin were characterized in the terahertz band. The experimental results show that when the type, composition proportion and particle size of kaolin changed, the time-domain signal, absorption coefficient and refractive index of the terahertz wave will show regular changes. Through qualitative and quantitative analysis, the difference which is kaolin of different types, different particle sizes and different concentrations can be effectively distinguished. The research results show that the time-domain terahertz spectroscopy technology can be effectively applied to the mineral component analysis and has important significance in geoscience research.

Citation Download Citation

Caiqin Liu, Meihui Yang, Zili Zhang, Zhiyuan Zheng, and Haochong Huang "Characterizations of the kaolin analyzed by terahertz time-domain spectroscopy", Proc. SPIE 11907, Sixteenth National Conference on Laser Technology and Optoelectronics, 119070R (31 August 2021); https://doi.org/10.1117/12.2601928

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