Direct-current electric-arc furnace

Details Direct-current electric-arc furnace Direct-current electric-arc furnace

F - Mech Eng,Light,Heat,Weapons

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F27B 3/14 (2006.01) F27D 11/08 (2006.01) H05B 7/06 (2006.01)

Patent

CA 2023041

89/102 -9- ABSTRACT OF THE DISCLOSURE In a direct-current electric-arc furnace, the bottom contact, that is the hearth electrode (7,8,11), must be insulated from the metallic shell of the furnace vessel by insulating material. For this pur- pose, the bottom plate (11) carrying the bottom contact essentially forms the bottom of the furnace vessel. This bottom contact (11), with an insulating material (18), or a material (18) which is at least a poor electrical conductor, inbetween, rests on a part (17), projecting to the inside, of the metallic vessel shell (2). (Fig. 1)

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