Abstract: An electric melting furnace arrangement for the continuous melting of spinnable mineral fine-particle or granular materials has a refractorily lined furnace vessel, a plurality of electrodes arranged on a partial circle extending into the furnace vessel from above, conveying devices for the materials to be melted designed as dosing pipes arranged close to the partial circle formed by the electrodes and each provided between two electrodes and a tapping device penetrating a side wall of the furnace vessel. Transporting devices are provided for admitting the dosing pipes, and when the dosing pipes are completely full, the further conveying of the materials to be melted is interruptable.

Abstract: An arrangement for the production of vitrified slag includes a rotating cooling drum provided with an internal cooling and on whose surface molten-slag-receiving recesses are provided. The site of impact of the slag is approximately at the uppermost point of the cooling drum. In order to ensure the vitrification of the slag with the flowing of molten slag off the cooling drum being reliably prevented, and an economic production of solidified slag being ensured, the recesses are separated by webs in the circumferential direction of the cooling drum and in the end region of the cooling drum are designed to be closed in the axial direction thereof. A plurality of cooled counter rolls contacting the webs by their surfaces and aligned with their axes parallel to the cooling drum are provided. They are arranged after the site of impact of the slag in the rotation direction of the cooling drum and one behind the other in its circumferential direction.

Abstract: A tilting channel for guiding molten material includes a trough-shaped channel body provided with outlets at opposite ends thereof and a spot of impact for the jet of molten material between said outlets. The channel body is pivotable by means of a pivot drive about a tilting axle from a normal operation position into an emergency operation position, and vice versa. The channel body is formed by two channel parts enclosing an angle O<.phi.<180.degree., and the bottom of the first channel part is arranged at a lower level relative to the bottom of the second channel part. The spot of impact of the jet is located on the first channel part close to where the latter enters into the second channel part, and the vertical middle plane of the first channel part lies in the plane formed by the jet, when the first channel part is in its downwardly inclined normal operating position.

Abstract: Electric furnace arrangement including a furnace vessel with liftable and lowerable lid penetrated by at least one electrode. The electrode is fastened to a liftable and lowerable supporting construction by first clamping devices. For lifting the lid, a further clamping device for the electrode is provided on the lid, at least one coupling element is provided on the supporting construction and at least one counter-coupling element is arranged on the lid, which can be brought into and out of engagement with the coupling element. A connecting element can be provided between coupling element and supporting construction.