Abstract: A drill bit (11) for the drilling, in particular the rotary percussive drilling, of a hole, in particular a tap hole of a melting furnace, the drill bit (11) comprising a drill head (10), which has at least one hard material insert (16), and a base body (12) for connecting the drill bit to a driving element, the hard material insert (16) being inserted into a seat, which is formed in an axial end face (13) of the drill head (10), in such a manner that at least a head cutting edge (18) of the hard material insert (16) protrudes beyond the axial end face (13), wherein the seat has a flank portion and a mating flank portion located opposite the flank portion, between which the hard material insert (16) is disposed, the flank portion, which is disposed opposite a recess formed in the hard material insert (16), being provided with a material projection (35) which is at least partially made of a welding material, is bonded to the drill head (10) via the welding material and protrudes into the recess so as to establ

Abstract: The invention relates to a slide valve (20) having a slide valve plate (32) movable in a slide valve rail (29) between a locked position and an open position in a slide valve casing (26), said slide valve rail (29) being provided with a slide valve seal for attaining a gas-proof locked position, said slide valve rail (29) being connected to the slide valve casing (26) via a flange connection in such a manner that the slide valve rail (29) is removable from the slide valve casing (26) radially to a flow axis of the slide valve (20).

Abstract: The invention relates to a manipulator (10) for pivoting an object of manipulation, the manipulator (10) having a frame comprising a pivot base which can be pivoted in a horizontal plane about a vertical pivot axis (11) relative to the frame by means of a drive (26), the pivot base having a boom (20) comprising a load carrier (15) which is disposed at a free end of the boom (20) and serves to be connected to the object of manipulation, the load carrier (15) having a pivot device for pivoting the object of manipulation in the horizontal plane, wherein, in order to produce a pivoting four-bar linkage formed in the horizontal plane and comprising the boom (20), a control bar (24) extending from the frame to the pivot device is provided, one end of the control bar (24) being articulated to the pivot device of the load carrier (15) and the other end being articulated to the frame via a control gear mechanism in such a manner that in the event of a base pivoting movement of the pivot base, a load carrier pivoting m

Abstract: A device for determining the topography of the burden surface in a shaft furnace (10), the device comprising a radar device (20) that scans the burden surface (18) and has an antenna device (22) arranged in the area of a furnace cover (13), the antenna device being arranged on an axis of rotation (24) that is inclined in relation to a vertical axis (15) of the shaft furnace at an angle of inclination ? and being rotatable about the axis of rotation by means of a drive device in such a manner that a radar fan beam (28) formed by the emitted radar radiation of the antenna device is incident upon the burden surface along a profile line p and sweeps across the burden surface as the antenna device rotates.

Abstract: The invention relates to a manipulator (10) for pivoting an object of manipulation, the manipulator (10) having a frame comprising a pivot base which can be pivoted in a horizontal plane about a vertical pivot axis (11) relative to the frame by means of a drive (26), the pivot base having a boom (20) comprising a load carrier (15) which is disposed at a free end of the boom (20) and serves to be connected to the object of manipulation, the load carrier (15) having a pivot device for pivoting the object of manipulation in the horizontal plane, wherein, in order to produce a pivoting four-bar linkage formed in the horizontal plane and comprising the boom (20), a control bar (24) extending from the frame to the pivot device is provided, one end of the control bar (24) being articulated to the pivot device of the load carrier (15) and the other end being articulated to the frame via a control gear mechanism in such a manner that in the event of a base pivoting movement of the pivot base, a load carrier pivoting m

Abstract: The present invention relates to a method for refurbishing a tap-hole. The method comprises the following steps: A making a tap-hole channel trough a tap-hole block in a lower section of an arc, blast or smelter furnace, and B restoring said tap-hole channel to form a refurbished tap-hole; characterized by the following steps: 1. detachably connecting a prefabricated, hollow, re-fractory tap-hole insert comprising a shell to a clay gun, wherein said tap-hole insert comprises a. a first end and a second end in axial direction, wherein said second end is blocked. b. an opening arranged on said first end, c. a hollow passage in axial direction, wherein said hollow passage is accessible through said opening, d. at least one lateral through hole, arranged in said shell, 2. inserting said tap-hole insert into said tap-hole channel, wherein said clay gun is fluidly coupled with said tap-hole insert and said tap-hole channel, 3.

Abstract: The invention relates to a device for distributing a material in a molten state, said device comprising a swinging chute (16) supported so as to be capable of swinging about a substantially horizontal swinging axis (25), and a driving group (40). The latter comprises gear motor group (42), a drum winch (44) driven by the gear motor group (42), and at least one cable segment (50, 50?) that can be both wound on or unwound from said drum. One end of the cable segment (46, 50, 50?) is attached to the swinging chute (16) at a distance L from the swinging axis (25) thereof so as to apply a swinging momentum to said swinging chute (16).

Abstract: The invention relates to a device for distributing a material in a molten state, said device comprising a swinging chute (16) supported so as to be capable of swinging about a substantially horizontal swinging axis (25), and a driving group (40). The latter comprises gear motor group (42), a drum winch (44) driven by the gear motor group (42), and at least one cable segment (50, 50?) that can be both wound on or unwound from said drum. One end of the cable segment (46, 50, 50?) is attached to the swinging chute (16) at a distance L from the swinging axis (25) thereof so as to apply a swinging momentum to said swinging chute (16).

Abstract: A handling device for elements of tapping runners on a shaft furnace, in particular for runner covers, the device including a support base arranged on the cast house floor of a blast furnace, laterally of the tapping runner and a frame (14) which is supported by the support base and connected thereto by means of a bearing defining a first axis of rotation, which is essentially vertical and about which the frame can rotate relative to the support base. The device further includes a lifting arm having a first end portion and a second end portion, the first end portion being connected to the frame by means of at least a first rotational joint defining a second axis of rotation, which is essentially horizontal, about which the lifting arm can pivot in order to lower or lift its second end portion.