TEST OF REMOVAL OF IRON MINERALS FROM KAOLIN USING HGMS

Authors

  • Lili Tahli R&D Centre for Mineral and Coal Technology

DOI:

https://doi.org/10.30556/imj.Vol11.No2.2008.591

Keywords:

kaolin, iron, HGMS, beneficiation, magnetic separation

Abstract

Kaolin from Nagreg contains iron mineral particles approximately 0.58 % Fe that cause a grey color of the material . An effort to reduce iron content can be made by applying beneficiation test, using HGMS (High Gradient Magnetic Separator), so the kaolin may become white color and can reach the standard quality for paper industries.

 

A HGMS beneficiation test was conducted at magnetic field strength of 5,000 Gauss. The experi- ments were carried out using variable flow rates of 1, 1.5, 2, 2.5, 3 and 3.5 liter per minute and slurry density of 2.5, 5, 7.5, 10, 12.5 and 15 % solid.

 

The results of experiments show that the optimum condition with flow rate of 2.5 liters/minute gave the quality of kaolin concentrate with iron content of 0.29 %Fe.

References

Fontes, M.P.F., 1992. Iron Oxide-Clay Mineral Association in Brazilian Oxisols: A Magnetic Separation Study, Clays and Clay Minerals, Vol.40, No.2, p.175-179.

Kogel, J.E. (ed), 2006. Industrial Minerals and Rocks, SME, American Institute of Mining, Metallurgical and Petroleum Engineers Inc, New York, pp.335-394.

Lawver, J.E. and Hopstock, D.M., 1985. Electro- static and Magnetic Separation, sme mineral processing handbook, Norman L. Weiss (Chief Editor).

Wikipedia, 2007. Clay minerals, the free encyclope- dia, http://en.wilkipedia.org/wiki/Clay minerals

Wikipedia, 2006. High Gradient Magnetic Separa- tors, HGMS-HGMF, Metso Minerals (Sala) AB, SE-733 25 SALA , Sweden.

www.metsominerals.com

Wikipedia 2007. Kaolinite, the free encyclopedia, http://en.wilkipedia.org/wiki/Kaolinite

Test of Removal of Iron Minerals from Kaolin using HGMS ... Lili Tahli 23

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