Single dipole permanent magnet induction pump for liquid metals

M. Kalvāns^1,2 - A. Bojareviċs¹ - T. Beinerts¹ - A. Gaile¹

¹ Institute of Physics University of Latvia, 32 Miera str., Salaspils, LV-2169, Latvia
² Riga Technical University,1 Kaļķu str., Rīga, LV-1658, Latvia

Abstract
Electromagnetic liquid metal induction pumps can be used in different technological processes, such as dosing, mixing, crystallization and others. Contactless devices are of special importance in metallurgical processes because high temperature metals are chemically aggressive and erode most materials over time. Additionally, induction pumps with permanent magnets are more efficient and cheaper than AC electromagnetic induction alternatives, thus allowing for a wider application range. A single dipole permanent magnet rotor magnetized perpendicular to the axis of rotation induces a travelling magnetic field and is used to demonstrate the effectiveness of the liquid metal pump. Non-dimensional parameters are analysed to upscale the experimental results to an industrial size dispenser. Tables 1, Figs 6, Refs 9.

Key words: Liquid metal induction pump, permanent magnets, magnetohydrodynamics, melt treatment.