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| Number | Title | Issue Date |
| 8088327 | Rotary charging device for a shaft furnace A rotary charging device for a shaft furnace commonly comprises a rotary distribution configured to distribute charge material on a charging surface in the shaft furnace. A rotatable structure supports the rotary distribution means and a stationary support rotatably... | 01/03/2012 |
| 8071014 | Apparatus and method for closing or opening an opening, especially a bottom opening of a material hopper for a blast furnace, and blast furnace having such an apparatus An apparatus is provided for closing or opening an opening, especially a bottom opening of a material hopper arranged above the mouth of a blast furnace having a drivable flap plate, which is movable into an open position leaving the opening clear and into a closed ... | 12/06/2011 |
| 8052922 | Rotary batch distributor The invention relates to the iron and steel industry, in particular to batch charging into shaft, mainly blast furnaces. The inventive rotary batch distributor for shaft furnaces comprises an axle platform (1) and blades (2) which are equally spaced ar... | 11/08/2011 |
| 7175690 | Pre-treatment process for feed material for direct reduction process A pretreatment process for solid lump feed material for a gas and pellet/lump-based direct reduction process, comprising preheating feed material to a temperature of from about 200 C to about 500 C, without reduction, in a non-reducing atmosphere prior to charging t... | 02/13/2007 |
| 6948930 | Furnace head or furnace throat seal A blast furnace head (11) including a material loading device comprising rotary chute (14) driven in rotation about a first, vertical axis of rotation (16), and a loading chute (15) at the outlet of same, driven in rotation about a second... | 09/27/2005 |
| 6833106 | Compact blast furnace installation In order to design a blast furnace in a space and cost-saving manner, the invention provides for an especially compact blast furnace (10) having no hearth, wherein the burden is transported to the charging platform by vertical conveyers (20) and a comp... | 12/21/2004 |
| 6685878 | Throat closing device for shaft furnaces, especially blast furnaces having a material feeding hopper The invention relates to a throat closing device for shaft furnaces, especially blast furnaces having a material feeding hopper (1), to which a temporarily rotating rotary hopper (2) which is sealed with regard to the stationary parts (3) is connected. Th... | 02/03/2004 |
| 6544470 | Feeding device for electrical shaft furnaces with an electrode-receiving central tube A feeding device for closed shaft furnaces connected to a gas-extracting device, in particular for low shaft furnaces for melting steel scrap, having a transporting device, which leads to the head of the upper furnace vessel and is integrated at least par... | 04/08/2003 |
| 6540958 | Bell and hopper for shaft furnaces In order to configure a bell and hopper for shaft furnaces, in particular, blast furnaces, comprising a charging bin with a feed tube, a rotating chute carrier with rotary drive, a swiveling chute in the interior of the furnace with drive means arranged e... | 04/01/2003 |
| 6511629 | Shaft furnace The invention relates to a shaft furnace, in particular a direct-reduction shaft furnace, with a charge composed of particulate material, in particular a particulate material containing iron oxide and/or sponge iron, the said material being capable of bei... | 01/28/2003 |
| 6342179 | Furnace for the direct reduction of iron oxides Gravitational type furnace for the direct reduction of mineral iron comprising a median reaction zone (14) in which the reactions to reduce the mineral iron occur, means (12, 13) to feed the mineral iron to said reaction zone (14), distribution means (16,... | 01/29/2002 |
| 6338815 | Steel cables driven furnace top chute feeder for blast furnace The present invention relates to a furnace top distribution device used for blast furnace and in particularly, to a furnace top chute feeder driven by steel cables. The chute feeder comprises a system for oscillating said chute which consists of steel cab... | 01/15/2002 |
| 6261513 | Device for directly monitoring the charging process on the inside of a shaft furnace A device for direct observation of the charging process inside a shaft furnace during its operation, in particular a blast furnace, with a measuring lance, which is arranged above the charge column in the shaft furnace in such a way that it is exposed to ... | 07/17/2001 |
| 6056914 | Apparatus for charging a shaft-type cupola furnace An apparatus for charging a shaft-type cupola furnace and located between an upper stack and a lower furnace having a preselected inside diameter. An inverted conical trough is provided for receiving charge materials delivered to the furnace. The conical ... | 05/02/2000 |
| 6030430 | Blast furnace with narrowed top section and method of using Described herein is an Improved Converter System designed to help reduce air, land and water pollution by completely converting materials that presently cause pollution into clean burning fuels and a host of other products beneficial to mankind. The prima... | 02/29/2000 |
| 5965085 | Apparatus for charging a shaft furnace An apparatus for charging a shaft furnace, in which each of plane faces of a second segment of a guiding member of a unit for distributing a burden over a cross section of the furnace is formed so that its first line of intersection with a first vertical ... | 10/12/1999 |
| 5738822 | Shaft furnace charging device with rotating chute A shaft furnace charging device with rotating chute comprises a supporting structure (22) overhanging the shaft furnace (10), a mounting flange (18) fixed rigidly to the shaft furnace (10), a batch hopper (26, 28) supported by the supporting structure (22... | 04/14/1998 |
| 5494263 | System for solid material charging into vertical reactors by electronic control of the exhaust gases This invention relates to a method to provide a system for solid material arging into vertical reactors by electronic control of the exhaust gases, a unique process applied for charging into vertical reactors, cupolas, ferrous and non-ferrous blast furnac... | 02/27/1996 |
| 5411242 | Charging device with member for regulating the flow rate A charging device is provided for feeding an enclosure with a predetermined flow rate of a solid material. The device comprises a materials hopper, a pipe for feeding the enclosure, and a member for retaining and for regulating the flow rate of material. ... | 05/02/1995 |
| 5299900 | Installation for charging a shaft furnace An installation is proposed for charging a shaft furnace comprising a rotating and pivoting distribution chute. The chute is supported in a removable manner by two lateral side plates of a "U"-shaped stirrup piece. When a first ring securely fastened to a... | 04/05/1994 |
| 5271609 | Plant comprising a shaft In a plant including a shaft, which, in its upper end region, includes a gas exhaust device and a charging arrangement for continuously charging bulk material, a temperature measuring device for measuring the temperature of the gas emerging from the bulk ... | 12/21/1993 |
| 5196050 | Control method of and apparatus for material charging at a top of a blast furnace In a control method of material dumping at top of a blast furnace, in which material stored in a furnace top bunker is dumped through a flow rate control gate into a blast furnace in a specified time, value of initial material weight before the transfer s... | 03/23/1993 |
| 5190719 | Plant for the production of molten metals A plant for the production of molten metals includes a melting vessel in whose wall burners and optionally oxygen-containing-gas feeding ducts are installed and on whose upper end a charging device as well as a gas evacuation duct receiving the offgases f... | 03/02/1993 |
| 5022806 | Apparatus for charging a shaft furnace The present invention relates to an apparatus for charging a shaft furnace. The apparatus includes a rotary and pivoting distributor chute suspended on the head of the furnace, a device for driving this chute, which consists of a first and second running ... | 06/11/1991 |
| 5009398 | Device for reducing the stresses on a sealing shutter An apparatus for sealing an orifice is disclosed. The apparatus includes a shutter and an annular seat. The shutter includes a shutter body and a soft peripheral gasket. The shutter has a closed position in which the gasket is laid against the annular sea... | 04/23/1991 |
| 4986516 | Sealing shutter for a shaft furnace A shutter for sealing a flow-off orifice of charging lock for charging a shaft furnace is disclosed. The shutter includes a soft peripheral gasket and is movable between a closed position, in which the gasket is laid against an annular seal surrounding a ... | 01/22/1991 |
| 4949940 | Charging arrangement for shaft furnaces, in particular blast furnaces A charging arrangement for shaft furnaces, in particular blast furnaces, comprising a container which is arranged above the shaft furnace and which is subdivided by a separating wall into a lower distributor chamber and an upper lock chamber to which the ... | 08/21/1990 |
| 4941792 | Handling device for a distribution chute of a shaft furnace and drive mechanism suitable for this device The present invention relates to a handling device for a distribution chute of a shaft furnace, the said distribution chute being suspended pivotably on a rotary cage mounted by means of bearings in a housing installed in the head of the furnace and conta... | 07/17/1990 |
| 4547116 | Apparatus for controllably charging a furnace The position of the discharge end of a tubular member, supported from its first end so as to be rotatable about a first axis and pivotal about a second axis which intersects and is transverse to the first axis, is controlled from a remote location. The co... | 10/15/1985 |
| 4196893 | Shaft furnace A shaft reduction furnace is provided with a pressure equalizing chamber for supplying raw materials such as ores in the furnace. The interior of the furnace is separated by a dividing plate into an upper portion and a lower portion. A pipe path through t... | 04/08/1980 |
| 4140480 | Hot cupola gas burner A pilot flame to be positioned close to the charge opening of a cupola which uses carbon monoxide as a fuel in the presence of a fresh supply of combustion air, such carbon monoxide being drawn off from a position on the cupola where the temperature is ab... | 02/20/1979 |
