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| Number | Title | Issue Date |
| 7713329 | Apparatus for manufacturing molten irons to improve operation of fluidized bed type reduction apparatus and manufacturing method using the same The invention relates to an apparatus and method for manufacturing molten iron. The method for manufacturing molten iron includes producing a mixture containing iron by drying and mixing iron-containing ore and additives, passing the mixture containing iron through ... | 05/11/2010 |
| 6960238 | Method and installation for the indirect reduction of particulate oxide-containing ores In a process for the gas reduction of particulate oxide-containing ores, in particular iron-oxide-containing material, in the fluidized-bed process at a pressure of | 11/01/2005 |
| 6562102 | Method for producing liquid pig iron Process and apparatus for producing liquid pig iron or primary steel products from iron-containing material in lump form in a fusion gasifier (1), in which, with lump coal and oxygen-containing gas being fed in, and with simultaneous formation of a reduct... | 05/13/2003 |
| 6488738 | Method of producing molten metal A combustion chamber in a melter gasifier extends into a fluidized bed to isolate fine particulate ore introduced into the chamber from the remaining internal portion of the melter gasifier. The fine particulate ore is melted in the chamber and falls on t... | 12/03/2002 |
| 6264722 | Process for producing liquid pig iron or intermediate steel products and installation for implementing it In a process for producing molten pig iron or steel preproducts from fine-particulate iron containing material in a meltdown gasifying zone of a melter gasifier, under the supply of carbon-containing material and oxygen-containing gas at the simultaneous ... | 07/24/2001 |
| 6235080 | Charging device for directly charging reduced fine iron ore into melter-gasifier A device is disclosed for directly charging raw material into a melter-gasifier in a molten iron manufacturing facility using coal and fine iron ore. The elutriation of fine dusts is inhibited while directly charging coal and reduced fines into the melter... | 05/22/2001 |
| 6228142 | Apparatus for keeping optimal penetration depth formed at front end of oxygen tuyere and method for keeping the same An apparatus for keeping an optimal penetration depth formed at the front end of an oxygen tuyere in the producing facilities of molten pig iron utilizing non-coking coal and a method for keeping the same. A sensor for measuring distance using a laser for... | 05/08/2001 |
| 5948139 | Process for the production of molten pig iron or steel pre-products and a plant for carrying out the process In a process for the production of molten pig iron or steel pre-products from fine-particulate iron-cintaining material, in a meltdown-gasifying zone of a melter gasifier (1), under the supply of carbon-containing material and oxygen-containing gas at the... | 09/07/1999 |
| 5944871 | Process for the production of molten pig iron or steel pre-products and a plant for carrying out the process In a process for the production of molten pig iron (12) or steel pre-products from fine particulate iron-containing material, in particular reduced sponge iron, in a meltdown gasifying zone (6) of a melter gasifier (5) the iron-containing material is melt... | 08/31/1999 |
| 5630862 | Method of providing fuel for an iron making process The invention provides a method for both disposing of an environmentally undesirable material comprising petroleum coke and the sulfur and heavy metals contained therein and of providing fuel for a process of making molten iron or steel preproducts and re... | 05/20/1997 |
| 5584910 | Process for producing molten pig iron or molten steel pre-products A process for producing molten pig iron or molten steel pre-products from charging substances formed of iron ores and fluxes and at least partially comprising fines, wherein the charging substances are directly reduced to sponge iron in at least one reduc... | 12/17/1996 |
| 5429658 | Method of making iron from oily steel and iron ferrous waste The invention relates to a method for processing environmentally undesirable materials including petroleum coke and the sulfur and heavy metals contained therein and oily steel and iron ferrous waste from machine shop and steel and iron processing to prov... | 07/04/1995 |
| 5397376 | Method of providing fuel for an iron making process The invention provides a method for both disposing of an environmentally undesirable material comprising petroleum coke and the sulfur and heavy metals contained therein and of providing fuel for a process of making molten iron or steel preproducts and re... | 03/14/1995 |
| 5380352 | Method of using rubber tires in an iron making process The invention provides a method for both disposing of an environmentally undesirable material comprising rubber tires and the sulfur and metals contained therein and of providing fuel for a process of making molten iron or steel preproducts and reduction ... | 01/10/1995 |
| 5364448 | Process for the production of liquid metal from fine-grain metal oxide particles and reducing and smelting furnace for carrying out the process In a process and an apparatus for the production of liquid metal (4) from fine-grain metal oxide particles, the particles, together with hot reducing gas, are blown against a heated bulk material filter layer (9) of lump coal and/or ceramic pieces, a subs... | 11/15/1994 |
| 5354356 | Method of providing fuel for an iron making process The invention provides a method for both disposing of an environmentally undesirable material comprising petroleum coke and the sulfur and heavy metals contained therein and of providing fuel for a process of making molten iron or steel preproducts and re... | 10/11/1994 |
| 5338336 | Method of processing electric arc furnace dust and providing fuel for an iron making process The present invention provides a method for processing environmentally undesirable materials including petroleum coke and the sulfur and heavy metals contained therein and agglomerated waste dust from an electric arc furnace and the zinc, cadmium, lead an... | 08/16/1994 |
| 5320676 | Low slag iron making process with injecting coolant The invention relates to a method of making iron or steel preproducts and reduction gas with a low slag forming process utilizing petroleum coke as a fuel in a melter gasifier.... | 06/14/1994 |
| 5259864 | Method of disposing of environmentally undesirable material and providing fuel for an iron making process e.g. petroleum coke The invention provides a method for both disposing of an environmentally undesirable material comprising petroleum coke and the sulfur and heavy metals contained therein and of providing fuel for a process of making molten iron or steel preproducts and re... | 11/09/1993 |
| 5259865 | Very low slag iron making process The invention relates to a method of making iron or steel preproducts and reduction in gas a substantially slag free process utilizing petroleum coke as a fuel in a melter gasifier.... | 11/09/1993 |
| 5131942 | Method for producing molten metal from powder state ore A method and apparatus for producing molten metal from powder state ore through smelting process to be performed in a shaft furnace, utilized the reducing material having grain size greater than that n-times of the gas flow velocity corresponding grain si... | 07/21/1992 |
| 5035402 | Furnaces The furnace comprises two chambers, a closed well melting chamber and a main heating chamber. The furnace includes a hot gas duct connecting the chambers, the hot gas duct having a damper to control the gas flow between chambers in accordance with the res... | 07/30/1991 |
| 4995904 | Method for the pretreatment of a lumpy carbon carrier A method is disclosed for pretreatment of a lumpy carbon carrier suitable for forming a fluidized bed and a solid bed used in the production of pig iron from iron ore. The ore is pre-reduced in at least one reduction plant and the thus produced iron spong... | 02/26/1991 |
| 4978387 | Process for the production of molten pig iron To produce molten pig iron by melt-reduction of iron ores of various grain sizes containing a fraction A including grain sizes to which diameters of less than 0.2 mm correspond, by pre-reducing the ore by reducing gas, completely reducing the pre-reduced ... | 12/18/1990 |
| 4793855 | Process for the gasification of sewage sludge A process for the gasification of sewage sludge or other carbon-containing waste materials in a gasifier (1) is described. A solid fuel and oxygen-containing gas are also fed into said gasifier. The residues formed during gasification collect at the botto... | 12/27/1988 |
| 4755219 | Process for producing molten pig iron or steel raw material A process for producing molten pig iron or steel raw material in which iron oxide-containing, preferably pre-reduced raw material particles are introduced from above into a fluidized bed formed from carbonaceous solid particles and an oxygen-containing ca... | 07/05/1988 |
| 4728360 | Process for the production of molten pig iron and steel pre-products A process and an arrangement for the production of molten pig iron or steel pre-products from particulate ferrous material as well as for the production of reducing gas in a meltdown gasifier. A fluidized bed of coke particles is formed by the addition of... | 03/01/1988 |
| 4725308 | Process for producing molten pig iron or steel pre-products There is disclosed a process for the production of molten pig iron or of steel pre-products from particulate ferrous material as well as for the production of reduction gas in a meltdown gasifier. A fluidized-bed zone is formed by coke particles upon the ... | 02/16/1988 |
| 4588437 | Method for producing molten pig iron or steel pre-products in a melt-down gasifier There is disclosed a method and a melt-down gasifier for producing molten pig iron or steel pre-products and reduction gas. A first fluidized-bed zone is formed by coke particles, with a heavy motion of the particles, above a first blow-in plane by the ad... | 05/13/1986 |
| 4566902 | Process for removing sulfur during melting of pig iron For removing sulfur during melting of pig iron in a fluidized coal layer, it is proposed to introduce into the fluidized coal layer lumpy and/or grainy desulfurating agent. The desulfurating agent can additionally be introduced into the slag, noting that ... | 01/28/1986 |
