Abstract: Electric arc furnace, having a tapping hole (2) in the bottom of the vessel or in the bottom of a part (1) of the vessel, which projects in a bay window-like manner, and a closure arrangement (3) for the tapping hole (2), comprising a closure plate (4) which is movable from a closure position of closing the tapping hole from the outside into an open position of opening the tapping hole, by means of a first lever (6) which is pivotally mounted to the outside of the vessel (pivot axis 11) and which is pivotal by a drive means (14), whereby the closure plate (4) is mounted to an arm (5) which is connected rotatably (rotary axis 8) to the first pivotal lever (6) and which is guided by means of a second pivotal lever (7) which at a spacing from the first lever (6) on the one hand is pivotally connected to the outside of the vessel (pivot axis 12) and on the other hand is connected rotatably (rotary axis 9) to the arm (5).