Design simulation of magnetic separator for purification of silica sand

Abstract Silica is an essential material in the electronics industries of LCDs and OLEDs, which particularly requirehigh purity. This study attempted to find the optimal design of a magnetic separator for silica sand containing iron compounds using CFD simulation. Three designs of magnetic separation were prepared and their efficiency was examined. As a result of the evaluation, the sufficient contact of particulate silica with the surface of magnetic emitters improved the magnetic separation effects. In addition, the loss of SiO 2 and the removal rate of Fe 2 O 3 depended stronglyon the particle size, flow rate and magnetic flux density. In addition, magnetic separation is quite effective for a particlesize of 10 ㎛ with a 0.2 m/s flow rate. Keywords : Iron particle, Magnetic separation, Purification, Silica, Numerical simulation * Corresponding Author : Sang Bum Kim (Korea Institute of Industrial Technology)Tel: +82-10-8978-9677 email: sbkim@kitech.re.krReceived September 4, 2015 Accepted January 5, 2016Revised September 22, 2015Published January 31, 2016