Finite Element Method Based Simulation of Electrical Breakage of Iron-Phosphate Ore
 
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Department of Mining and Metallurgical Engineering, Amirkabir University of Technology, Tehran. Iran
2
Department of Mining and Metallurgical Engineering, Amirkabir University of Technology, Tehran, Iran.
CORRESPONDING AUTHOR
Bahram Rezai   

Department of Mining and Metallurgical Engineering, Amirkabir University of Technology, Tehran, Iran., 424 Hafez Ave, Tehran, Iran, 15875-4413 tehran, Iran
Publication date: 2015-01-01
 
Physicochem. Probl. Miner. Process. 2015;51(1):137–150
 
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ABSTRACT
The effects of minerals composition, particle size, particle shape and electrodes distance in electrical field intensity and distribution on iron-phosphate ore were investigated by using commercial software, COMSOL Multiphysics®. This software is based on the Finite Element Method, a numerical technique in mathematics for calculating approximate solutions of partial differential equations with known boundary conditions. Magnetite, apatite and quartz were the based minerals of iron-phosphate ore component and the main material property used in these simulations was the electrical permittivity. The results showed that the induced electrical field was strongly dependent on the electrical properties of minerals, the feed particle size and the location of the magnetite mineral (due to higher permittivity) in the ore. The angle of particle contact surface with high voltage electrode was an important factor in the intensity of electrical field. The sharper the contact angle, the higher the intensity of electric field. Electrical discharge within the material was converted to electrohydraulic discharge within the surrounding water environment by increasing the distance between the high voltage electrode and the material contact surface.
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ISSN:1643-1049