Abstract: Refractory casting nozzle for a changing device arranged at the outlet of a metallurgical vessel is provided with a top side refractory plate, which is provided with an abutting surface at each of two opposing end faces. During a change, the casting nozzle can either be moved against the one abutting surface of a top side plate of an adjacent casting nozzle or be pushed out from this casting nozzle. This top side plate is provided, in the one abutting surface, with a centering element protruding on both sides of this and in the opposite abutting surface with a bevelling on both sides, designed such that, during a change, the casting nozzle cooperates, with its centering elements with the bevellings of the adjacent identically designed casting nozzle, thus bringing about a guiding of the two casting nozzles.

Abstract: In a device for manipulating preferably a casting tube in a changing device at the spout of a metallurgical vessel, this manipulation is performed by means of a robot having an attachable base, a carrying arm that pivots on the base and at least one extension arm mounted rotatably on the carrying arm and has a gripper, preferably for the casting tube. The base of the robot is attached alongside the vessel such that the carrying arm is pivotable to a side of the vessel into a downwardly directed position and each extension arm is movable along an underside of the vessel. This provides optimum placement of the robot, and consequently the device, so they do not impede access for personnel to the tundish on the casting platform during casting and corresponding manipulations can be carried out easily and operationally reliably with the device in an automated manner.

Abstract: Drive device for a stopper closure on a metallurgical vessel, including a housing arranged on the vessel in a removable manner, an adjustment system mounted in the housing so as to be height-displaceable and has a drive which can be coupled to the housing, and an upper connection element for a support arm carrying the fire-proof stopper. The adjustment system for the stopper is mounted so as to be height-displaceable on at least one bearing shaft fastened in the housing. This design of the adjustment system permits an increase in the stiffness of the drive device and hence of the fire-proof stopper suspended by the drive device on the support arm during pouring.

Abstract: Various embodiments provide for a gas purging plug (10) with a ceramic refractory body (10k) with a first end (10u) and a second end (10o); the second end (10o) is in the mounted position of the gas purging plug (10) in contact with a metal melt (41); the first end (10u) is at least partially covered with a metal cover (12.1), the metal cover (12.1) comprises an opening (16) to which optionally a gas supply adapter (20) is connected; the gas purging plug (10) is designed in such a way, that a purging gas which is supplied via the gas supply pipe (30) to the opening (16) flows through the body (10k) and exits the body (10k) at the second end (10o); and wherein at least one electronic sensor (70, 70.1, 70.2, 70.3, 70.4) is in contact with the gas purging plug (10), to detect a mechanical vibration (81).

Abstract: The invention relates to a batch composition for producing a refractory product, a method for producing a refractory product, a refractory product, and to the use of a synthetic raw material.

Abstract: Grains for the production of a sintered refractory product, a batch for the production of a sintered refractory product, a process for the production of a sintered refractory product and a sintered refractory product.

Abstract: This invention relates to a refractory ceramic batch and to a method for producing a refractory ceramic product.

Abstract: A unitary refractory ring having a sidewall surrounding and spaced from a center axis, and one or more lifting lugs distributed around the center axis. The lifting lugs extend from an inner face of the sidewall towards the center axis, and are located between lower and upper axial faces of the sidewall. Each lifting lug has a lower lug face extending radially towards the center axis from the inner face of the sidewall, and a backing structure extending upwards along an axial direction from the lower lug face towards the upper axial face of the sidewall. An assembly of refractory rings, and methods for making and assembling refractory rings are also provided.

Abstract: The invention concerns a batch for the production of a refractory product, a process for the production of a refractory product, a refractory product as well as the use of a refractory product.

Abstract: Sliding gate for a vessel containing molten metal includes a slide housing, a slide unit guided longitudinally in the slide housing and having a push rod, a mounting and a linear drive removably fastened in the latter and has a drive rod. This drive rod can be connected to the push rod by a coupling. The coupling is designed such that, when the linear drive has been pushed into the mounting, it automatically couples by movement of the drive rod towards the slide unit, while it uncouples when the linear drive is removed from the mounting transversely in relation to the direction of movement of the drive rod. A locking device is actuated by the linear drive and interacts with the mounting, by means of which the linear drive after being pushed into the mounting is fixed in the latter and can be unlocked again before it is removed.

Abstract: With a method for detecting variables in an outlet of a metallurgical vessel, different variables in the outlet are detected or measured by at least one coil surrounding the outlet channel and/or an induction coil of an induction heater as a monitoring system, wherein the variables relate to the slag portion when pouring out the metal melt, wear condition of refractory parts in the outlet channel, the solidified metal melt, flow rate and/or plugging mass in the outlet channel. After evaluation, a closure element for the outlet is actuated, heating of the metal in the outlet channel is activated and/or renewal of the outlet channel is triggered. In this way, optimum operation in the pouring of metal melt out of a vessel is simply achieved, wherein occurrence of irregularities are detected during the entire pouring, and pouring out of slag can be successfully prevented at the end of the pouring.

Abstract: Slide closure for a metallurgical vessel, with two compensation units I and II for equalizing overloads, which may result from the thermal extension and spreading of the fire-proof closure plate thicknesses conditional on manufacturing, and/or from the upper inner shell, wherein the inner shell can also be reduced during operation. The compensation unit I consists of a spring arrangement with fastening screws which can be moved away between the housing and a cover of the housing. The compensation unit II consists, for its part, of a spring arrangement with an insertion frame pressing against the lower closure plate, which insertion frame is fixed to the bottom of the housing with fastening screws.

Abstract: The invention relates to a batch for producing an unshaped refractory ceramic product, to a method for producing an unshaped refractory ceramic product, and to an unshaped refractory ceramic product produced by the method.

Abstract: The invention relates to a fire-resistant ceramic product, a batch for manufacturing a product of said type, and a process for manufacturing a product of said type.

Abstract: A ceramic refractory stopper, shaped as a rod with a total axial length LS, comprising a) a stopper body (12) of an axial length LB, a first end section (12U) of which being equipped with means to fasten the stopper body (12) to a raise and lowering device, and a second end section (12L) of which being followed by b) a dome-like stopper head (14) of an axial length LH, wherein c) the stopper body (12) features at least one outer planar surface section (P1, P2, P3), which extends along at least 50% of the axial length LB of the stopper body (12).

Abstract: The invention relates to a grain for production of a refractory product, to the use of such grains, to a refractory product, to a process for producing a refractory product and to a refractory product produced thereby.

Abstract: Method for determining the state of a fire-resistant lining of a vessel containing molten metal in particular in which maintenance data, production data, and wall thicknesses at least at locations with the highest degree of wear are measured or ascertained together with additional process parameters of at least one identical/similar vessel after the vessel has been used. The data is collected and stored in a data structure. A calculating model is generated from at least some of the measured or ascertained data or parameters, and the data or parameters are evaluated using the calculating model using calculations and subsequent analyses. Thus, related or integral ascertaining processes and subsequent analyses can be carried out, on the basis of which optimizations relating to both the vessel lining as well as the complete process of the molten metal in the vessel are achieved.

Abstract: The invention relates to a refractory ceramic gas purging element featuring an insert which was cast into a blind hole within a refractory gas permeable body, which insert is made of a refractory ceramic material and has a density different to that of the body.

Abstract: The present invention relates to a compound for making high-temperature-resistant or refractory molded bodies, made up of a mixture of: a refractory or high-temperature-resistant inorganic powder, granules and/or granulate, including a free-flowing compound or a powder made of carbon or also without carbon, a binder, the binder being made of a combination of tannin, lactose, fine-grained silica and aluminum powder, as well as the binder itself, and molded bodies produced from the compound including the binder, and a method of making same.

Abstract: Method and device for repairing the spout sleeve of a metallurgical vessel fitted securely within the refractory lining of the vessel in which the sleeve is repaired by applying mortar to the casting channel of the sleeve with a mortar dispenser inserted into the casting channel, which upon removing the mortar dispenser from the casting channel calibrates the latter over the entire length of the channel. The mortar dispenser is driven rotating coaxially to the casting channel during the mortar application and, after a defined time, is removed from the casting channel, still rotating. The method is particularly suitable for repairing the inner sleeve of a casting ladle with a slide closure adjoining the ladle spout, maintenance of which is automatically carried out in a maintenance station of the casting facility. Repair of the inner sleeve is also carried out automatically here during the maintenance of the slide closure.