Scientific Quarterly Journal of Geosciences

Scientific Quarterly Journal of Geosciences

Feasibility Study on Electrical Separator Efficiency Increment for Kahnooj Titanium Mineral Processing Pilot Plant

Document Type : Original Research Paper

Authors
S. M. Javad Koleini
M. Abdollahy
M. Nasrabadi
Mineral Processing Dep., Faculty of Engineering, T.M.U. University, Tehran, Iran
10.22071/gsj.2009.57834
Abstract
        In this paper, a study on efficiency increment (operation efficiency) of Kahnooj titanium pilot plant electrical roll separator with optimization of variable and effective parameters (crona voltage intensity, feed temperature and size distribution, rolls speed, crona electrodes position and splitter position) on operation efficiency is investigated and obtained results are presented. To achieve this aim, parameters were classified and then tests designed with Taguchi method. Feed size distribution tests in laboratory scale and the other tests in pilot plant scale were performed. Optimized values of crona intensity voltage, feed temperature, rolls speed was found to be 22 kv, 109, 154 rpm. However, the optimum position of crona electrodes, the first, second and third splitters were obtained to be 6, 8, 10 and 10 cm. In the position of optimum values, operation efficiency was increased from 35.9% to 46.1%. Moreover, operation efficiency in laboratory scale with d80 of 259 microns feed was maximized and operation efficiency of 46.0% obtained.
Keywords
Efficiency
Operation efficiency
Electrical Separator
Pilot Plant
Titanium
Kahnooj
References
Kelly, E.G. & Spottiswood, D.J. , 1989- "The theory of electrostatic separation" mineral engineering, Vol. 2.
Manouchehri, H.R.,  Hanumantha Rao, K. & Forssberg, K.S.E., 2001- "Review of electrical separation methods", mineral and metallurgical processing, Vol. 17.
Pearse, M.J.  & Pope, M.I., 2001- "The triboelectric separation of quartz—calcite and quartz—apatite powders after chemical conditioning",powder technology, Vol. 17.
Tarjan, G., 1986- "Electrical separation", mineral processing.
Scientific Quarterly Journal of Geosciences
Volume 17, Issue 68
Winter 2008
Pages 2-14