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| Number | Title | Issue Date |
| 8083988 | Mud gun cap A mud gun cap is provided. The mud gun cap includes a flame resistant outer face, a ring and a mounting device wherein the mud gun cap connects to a mud gun nozzle to protect the mud gun nozzle from deterioration because of contact with molten iron and slag. The mud... | 12/27/2011 |
| 7582254 | Mud gun cap A mud gun cap is provided. The mud gun cap includes a flame resistant outer face, a ring and a mounting device wherein the mud gun cap connects to a mud gun nozzle to protect the mud gun nozzle from deterioration because of contact with molten iron and slag. The mud... | 09/01/2009 |
| 6248288 | Rotating mechanism with arm A device for rotating a work element is disclosed. The device has a support structure, an arm mounted in the support structure in such a way that it can rotate, a rotation drive for rotating the arm around a rotation pin, the rotation drive being located ... | 06/19/2001 |
| 6245286 | Swivel device with cantilever arm A device for swiveling a working unit between a rest position and a work position is disclosed. The unit has an arm and a support structure, one end of the arm being arranged in the support structure in such a way that it can swivel. A swivel arm with an ... | 06/12/2001 |
| 5511768 | Tap hole plugging device Device for plugging a tap hole comprising an expulsion piston fitted in a plugging chamber, a first double-acting hydraulic actuator positioned behind the piston and a first channel passing through the piston for the passage of a piercing rod, and the fir... | 04/30/1996 |
| 5395095 | Combined machine for opening and plugging a taphole in a shaft furnace A combined machine for opening a taphole in a shaft furnace and for plugging the taphole with a plugging mass is presented. The machine comprises a mount, a suspension structure for the mount, drive means on the mount and a plugging device. The plugging d... | 03/07/1995 |
| 5346186 | Nozzle guard for blast furnace mudgun A nozzle guard device (50, 50') has a generally C-shaped half-shell configuration for shielding a lower and otherwise exposed portion of a blast furnace mudgun nozzle (22) from damaging contact with molten metal and slag during taphole closure operations.... | 09/13/1994 |
| 5246208 | Method for botting the tap hole of a shaft furnace and botting machine for the implementation of this method A method is provided for botting a tap hole of a shaft furnace using a botting gun fitted with a first hydraulic actuating cylinder holding the botting gun in bearing contact against the wall of the furnace, while a second actuating cylinder actuates a pi... | 09/21/1993 |
| 5225145 | Apparatus for opening and closing a taphole of a metallurgical furnace An improved apparatus for opening and closing a taphole of a metallurgical furnace includes stationary pedestal sections carrying an upper boom and a lower boom which booms can be slewed by driving means independently from each other with one of their end... | 07/06/1993 |
| 5000427 | Injection material for use in blast furnace The present invention relates to an injection material for the hot repairing of a blast furnace and an injection method of applying the same. An injection material comprising a refractory material, which was previously adjusted in particle size, a binder,... | 03/19/1991 |
| 4909487 | Process and notch gun for closing the tapholes of furnaces In closing furnace tapholes a plugging material is forced into the taphole through the nozzle of a notch gun and simultaneously a tapping rod, which remains in the taphole until the furnace is filled, is introduced into the plugging material. Opening of t... | 03/20/1990 |
| 4715585 | Method and apparatus for forming ladle well blocks Apparatus and method for filling the well of a molten metal ladle or like vessel with a pre-selected charge of disposable refractory sand is disclosed. The apparatus includes a disposable can positioned above and in the blocking and at the top of the well... | 12/29/1987 |
| 4557468 | Apparatus for plugging the taphole of a shaft furnace An apparatus for plugging the taphole of a shaft furnace is presented which comprises a fixed support frame having a main pivoting joint and a jib device. The jib consists of a rotary support joint. The other end of the rotary support arm having one end w... | 12/10/1985 |
| 4544143 | Taphole plugging apparatus for a shaft furnace A shaft furnace plugging apparatus is presented which occupies very little space and sweeps out a relatively low and comparatively flat continuous trajectory between an inoperative position and an operative position. The plugging apparatus includes a clay... | 10/01/1985 |
| 4283042 | Method for repairing the tap hole of a converter This invention discloses a method which can efficiently repair the tap hole of a converter even under high temperature. The method employs an injection pipe of a unique construction for applying refractory material onto the inner surface of the tap hole. ... | 08/11/1981 |
| 4279408 | Apparatus for changing tuyeres on a blast furnace Apparatus for changing tuyere and tuyere stock assemblies of a blast furnace in accordance with one aspect of the invention includes support rail means extending around the furnace and fixed a selected distance above the level of the tuyeres of the furnac... | 07/21/1981 |
| 4265433 | Apparatus for repairing the tap hole of a converter This invention discloses a method and an apparatus which can efficiently repair the tap hole of a converter even under high temperature. The method and apparatus employ an injection pipe of a unique construction for applying refractory material onto the i... | 05/05/1981 |
| 4247088 | Mud gun A mud gun for closing a tap hole of a vertical furnace, especially a blast furnace, is provided with a novel mechanism for traversing the gun barrel and pressing the muzzle of the barrel against the tap hole under high pressure.... | 01/27/1981 |
| 4227682 | Guide and support structure for furnace taphole plugging or drilling device An apparatus for guiding and positioning the tool of a machine for plugging or drilling blast furnace tapholes, the apparatus comprising an inclined main pivot, a support arm which is rotatably mounted at one end on the inclined main pivot and having a to... | 10/14/1980 |
| 4220321 | Swiveling mechanism particularly for taphole plugging devices A taphole plugging device has an extension arm which can be swiveled about a fixed axis by a drive train operated by a motor. At its end remote from its pivot, the extension arm carries the plugging gun. The drive train and motor for the extension arm are... | 09/02/1980 |
| 4201373 | Guiding and positioning mechanism for a plugging or drilling device A mechanism for guiding and positioning a workpiece of a machine for drilling or plugging a tap hole of a shaft furnace, the mechanism comprising a main pivot, a support arm which is rotatably mounted at one end on the main pivot, an intermediate arm havi... | 05/06/1980 |
| 4195825 | Compact apparatus for drilling and plugging tap holes A compact apparatus for drilling and plugging a tap hole of a shaft furnace, the furnace including a tap channel through which molten metal may flow, the tap channel extending from the tap hole in a direction generally radially with respect to the axis of... | 04/01/1980 |
| 4135705 | Taphole sealing apparatus The servicing of clay guns used in plugging the pouring holes of blast furnaces is facilitated by providing for the access to the sealant receiving cylinders of such clay guns through the front end thereof and without disassembling the clay gun from their... | 01/23/1979 |
| 4087083 | Manipulator Disclosed is a manipulator which is particularly suitable for tapping a furnace. The manipulator includes an elongate arm which is axially reciprocable and rotatable in a vertical and a horizontal plane, and a handle for operating the arm for its axial re... | 05/02/1978 |
| 4072250 | Apparatus for plugging holes in an electric smelting furnace or the like An apparatus for plugging holes in an electric smelting furnace or the like is disclosed. The apparatus comprises first and second tubular members, the second being adapted to be secured to the first by means of two assemblies mounted exterior of the tube... | 02/07/1978 |
| 4063722 | Ejector piston Leakage of viscous material past an ejector piston, for example the piston of a clay gun employed in plugging blast furnace tapholes, is eliminated by a piston and ring design which exposes in excess of 50% of the leading and inner diameter surfaces of an... | 12/20/1977 |
| 4058300 | Clay gun The efficiency of operation of a taphole plugging clay gun for a blast furnace is enhanced by facilitating the cleaning of the sealant receiving chamber thereof behind the ejector piston which moves therein. Cleaning is facilitated by providing a protecti... | 11/15/1977 |
| 4033565 | Mud gun having clamping device Disclosed is a clamping device for securely locking a turret of a mud gun in operative position where a gun barrel, which has been traversed and elevated to a blowing position, has its nozzle firmly pressed against a tap hole of a shell of a furnace to bl... | 07/05/1977 |
| 4008194 | Compositions for plugs of refractory material New compositions for refractory plugs to plug the tapholes of blast furnaces which exhibit less tendency to stiffen and to burn with the emission of heavy black smoke in use are prepared by adding 5-30 parts by weight of a petroleum pitch which has a high... | 02/15/1977 |
| 3984091 | Piston ring arrangement for a taphole gun In a taphole gun for use in closing tapholes in blast furnaces and the like, a tamping piston is axially displaceable through a cylinder for forcing tamping material into the taphole. An annular recess is formed in the circumferential periphery of the tam... | 10/05/1976 |
