A method for mixing molten metal and a compatible electric arc furnace

Mõlder, Heigo; Järvik, Jaan; Janson, Kuno; Gordon, Rauno; Vaimann, Toomas

doi:10.3176/eng.2011.3.04

Cited by 2 publications

(2 citation statements)

References 3 publications

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“…In our investigation of the effect of Lorentz forces on bath stirring, we note that in the systems studied temperatures may exceed the Curie temperature, over which the ferromagnetic material becomes paramagnetic. In our current magnetohydrodynamics (MHD) formulation, the induced magnetic field was modelled as an external field, the values of which were taken to be 10 to 100 times higher than those in the relevant literature [ 15 , 37 , 38 ], in order to test whether the effect of the magnetic field may be ignored. As indicated by the data in table 4 , the magnetic field contribution is, in fact, negligible, in accordance with our previous three-dimensional modelling of the EAF [ 9 ].…”

Section: Resultsmentioning

confidence: 99%

“…In view of the physical complexity involved in reductive smelting, analytically descriptive efforts tend to separate fluid flow from electromagnetic phenomena [6,12,[14][15][16][17]; hence, here we attempt the coupling of fluid flow, electromagnetic phenomena, melting and discrete phase phenomena (e.g. the interaction of CO bubbles with the bath), as a rational progression step towards a pragmatic description of the EAF continuum.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Pragmatic analysis of the electric submerged arc furnace continuum

Karalis¹,

Karkalos²,

Antipas³

et al. 2017

R. Soc. open sci.

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A transient mathematical model was developed for the description of fluid flow, heat transfer and electromagnetic phenomena involved in the production of ferronickel in electric arc furnaces. The key operating variables considered were the thermal and electrical conductivity of the slag and the shape, immersion depth and applied electric potential of the electrodes. It was established that the principal stimuli of the velocities in the slag bath were the electric potential and immersion depth of the electrodes and the thermal and electrical conductivities of the slag. Additionally, it was determined that, under the set of operating conditions examined, the maximum slag temperature ranged between 1756 and 1825 K, which is in accordance with industrial measurements. Moreover, it was affirmed that contributions to slag stirring due to Lorentz forces and momentum forces due to the release of carbon monoxide bubbles from the electrode surface were negligible.

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