Vertical electric-arc furnace

Magnetherm [Magee magnesium Eisenberg thermal] A process for making magnesium by reducing dolomite with ferrosilicon at 1,600°C in a vertical electric arc furnace ... 

The originality of the process resides in the use of a Tugh-power (8200 kW) electric arc furnace supplied with direct current electricity. The Huls arc furnace consists of a vertical tube surmounted by an injection chamber, into which the gas is introduced... 

In the electric arc furnace method, the raw material is melted by a three-phase arc in a container lined with MgO or AI2O3 (available Si02). The wiring voltage between two electrodes (electrodes introduced vertically into the container and almost touching the material) is generally 75V-180 V. To maintain a constant current, the distance between the electrodes and molten material must be adjusted automatically. 

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