DC ELECTRIC FURNACE FOR ELECTROSLAG REDUCTION OF METALS Russian patent published in 1998 - IPC

FIELD: electrometallurgy, in particular, production of ferroalloys; may be used for wasteless processing of slags and dewatered slimes including toxic ones. SUBSTANCE: furnace consists of jacket, hearth made in the form of ellipse in horizontal section of bath working space, roof provided with doors for withdrawal of flue gases, charge supply, introduction of tuyeres for supply of reducing gas, and electrodes, one of which is cathode, while the other, anode. Axes of electrodes run through the focal points of ellipse. Distance between electrode axes equals 3-5 electrode diameters. The furnace hearth is inclined in vertical plane at an angle of 15-45 deg to horizon from anode to cathode and taphole for metal discharge. Cathode is located in ellipse focus on the side of jacket wall with taphole for discharge of molten metal. EFFECT: higher efficiency. 1 dwg