UPGRADING OF LOW GRADE EGYPTIAN KAOLIN ORE USING MAGNETIC SEPARATION

Document Type : Original Article

Authors

1 Central Metallurgical Research and Development Institute (CMRDI), Helwan, Egypt.

2 Central Metallurgical Research and Development Institute (CMRDI), Helwan, Egypt

3 Faculty of Science, Chemistry Department, Benha University, Benha, Egypt

Abstract

Kaolin is a clay mineral that has a wide application in the industry, depending on its purity. The quality of kaolin mined 
around the world is depleting especially with depth and rate of mining. Consequently the usability of this mineral is 
threatened by the presence of some inherent impurities. Beneficiation enhances kaolin applications; hence, it becomes 
imperative to understudy comparative means of upgrading kaolin, for the process integration and optimization. The 
amenability of using magnetic separation for removing the iron oxide and titanium oxide impurities from the Egyptian Kaolin
has been studied. Different variables affecting of magnetic separation process such as solid percent, magnetic field, matrix 
loading capacity, and retention time were studied. The results indicated that substantial decrease in iron oxide (from 1.69 % 
to 0.75 %) and TiO2 (from 3.1 % to 0.71 %) contents as well as improving iso-brightness (from 63.76 % to 75.21 % and 
whiteness (from 79.85 % to 86.72 %) of the product could be achieved. 

Keywords

Journal of Basic and Environmental Sciences
Volume 4, Issue 3
July 2017
Pages 247-252

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