Abstract:
The invention relates to a method and melt channels for interrupting and restoring the melt stream of iron and metal melts in melt channels, in particular tap hole channels, of blast furnaces and drainage channels of melt furnaces. The method is characterized by a transition of the melt stream in the melt channels to the solidified state through cooling so that the melt stream can be interrupted, and by a melting of the solidified melt and a restoration of the melt stream through heating, in particular for re-establishing tapping of blast furnaces.
Abstract:
The invention relates to a holding apparatus (27) for a drill rod (15) of a taphole drilling machine (10) and to a method for removing a drill rod from a drill rod receptacle (17) from a taphole drilling machine, wherein the taphole drilling machine has a frame (14) with a drilling and percussion mechanism (16) movably arranged thereon, wherein the drilling and percussion mechanism has a drill rod receptacle for connecting the drill rod, wherein a gripping device (21) of the holding apparatus is arranged on the frame, wherein the gripping device serves for retaining the drill rod relative to the drill rod receptacle, and wherein the drill rod can be fixed securely on the frame by means of the gripping device.
Abstract:
The present invention relates to a handling device (10) for elements of tapping runners on a shaft furnace, in particular for runner covers. This device comprises a support base (12) 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 (12) and connected thereto by means of a bearing (38) defining a first axis of rotation (A), which is essentially vertical and about which the frame (14) can rotate relative to the support base (12). The device further comprises a lifting arm (16) having a first end portion (18) and a second end portion (20), the first end portion (18) being connected to the frame (14) by means of at least a first rotational joint (22) defining a second axis of rotation (B), which is essentially horizontal, about which the lifting arm (16) can pivot in order to lower or lift its second end portion (20). A handling member (24) is connected to the second end portion (20) of the lifting arm (16) by means of a second rotational joint (54) defining a third axis of rotation (C), which lies in a plane essentially perpendicular to the second axis of rotation (B), about which the handling member (24) can pivot with respect to the lifting arm (16). Furthermore, the handling device (10) comprises a fork-type grab (26) connected to the handling member (24) and arranged so as to allow picking up; transferring and putting down such elements. The present invention also concerns the use of this handling device (10) in a blast furnace installation, the handling device (10) being installed between two proximate main runners (76, 78) extending radially from the blast furnace (75), for removing, parking, installing and/or exchanging both runner covers (70, 70') of both blast furnace main runners (76, 78).
Abstract:
The invention relates to a method for interrupting and restoring the melt stream of iron and metal melts in melt channels, in particular tap hole channels, of blast furnaces and drainage channels of melt furnaces. The method is characterized by a transition of the melt stream in the melt channels to the solidified state through cooling so that the melt stream can be interrupted, and by a melting of the solidified melt and a restoration of the melt stream through heating, in particular for re-establishing tapping of blast furnaces.