High Grade Purification of Sericite by Hydrocyclone and Magnetic Separation


Article Preview

Sericite has the intermediate nature of the muscovite and illite, which has been used as the additive of the cosmetics, the ceramic industry, welding rods, and other various pigments and the paint. In this study, the characteristics of sericite were examined using XRD(X-ray diffractometer), XRF(X-ray fluorescence spectrometer), TG-DTA(Thermal Analyzer), SEM(Scanning Electron Microscope) and PSA(Particle Size Analyzer). The raw ore is composed of 60.90wt% SiO2, 7.88wt% K2O, 0.36wt% TiO2, 24.80wt% Al2O3, 1.64wt% Fe2O3, 2.39wt% CaO, and 0.83wt% MgO. After sericite was purified, the content of SiO2 decreased from 60.9wt% to 51.4wt%, and in the crystal phase the intensity of quartz decreased significantly. For the high grade purification of sericite, the removal of iron and separation of quartz for the raw ore (sericite), the hydrocyclone were used with the magnetic separator. The content of iron was reduced from 1.64wt% to 0.91wt%.



Materials Science Forum (Volumes 510-511)

Edited by:

Hyung Sun Kim, Yu Bao Li and Soo Wohn Lee




K. N. Kim et al., "High Grade Purification of Sericite by Hydrocyclone and Magnetic Separation", Materials Science Forum, Vols. 510-511, pp. 850-853, 2006

Online since:

March 2006




[1] Shoji Higashi, Applied Clay Science, Vol. 16(2000), p.171.

[2] Isao Kimura, et al, Ceramic International, Vol. 14(1988), p.217.

[3] N. P. Kook, S. O. Lee and B. S. Shin, Geosystem Engineering, Vol. 35(1998), p.43.

[4] Iwasaki, J. et al, Resources Processing, Vol. 24 (1997), p.127.

[5] D. J. Lee, J. Miner. Soc. Korea, Vol. 10(1997), p.114.

[6] C. H. Yoon, Y. C. Park, D. K. Lee and S. K. Kwon, Geosystem Engineering, 41(4)(2004), p.327.

[7] Lars E., Elof Hansson, Journal of the TAPPIK, 20(1), (1988).