Class 75/460 - Carbonaceous

Subclass of Class 75 - Specialized metallurgical processes, compositions for use therein, consolidated metal powder compositions, and loose metal particulate mixtures
Definition: Process wherein the added substance contains Carbon (C)
No. of patents: 38
Last issue date: 03/13/2012

Number	Title	Issue Date
8133298	Blast furnace iron production with integrated power generation An integrated system for blast furnace iron making and power production based upon higher levels of oxygen enrichment in the blast gas is disclosed. The integrated system leads to; 1) enhanced productivity in the blast furnace, 2) more efficient power production, an...	03/13/2012
7232542	Preheating cold blast air of a blast furnace for tempering the hot blast temperature An improved blast furnace system for producing molten iron incorporating a preheater to heat the cold blast air used to temper the hot blast temperature is disclosed. The improved blast furnace system comprises a blast furnace, a hot blast main for conveying a suppl...	06/19/2007
7225746	Low NOx combustion Combustion of hydrocarbon liquids and solids is achieved with less formation of NOx by feeding a small amount of oxygen into the fuel stream. ...	06/05/2007
7199088	Lubricating oil for a diesel powered engine and method of operating a diesel powered engine A lubricating oil composition useful for a diesel-powered engine is provided that reduces NOx emissions level produced from a diesel-powered engine. The lubricating oil comprises a base oil and at least one oil-dispersible source of HNCO such as isocyanates. A metho...	04/03/2007
6978726	Combustion with reduced carbon in the ash Combustion of coal in which oxygen is injected into the coal as it emerges from burner produces ash having reduced amounts of carbon. ...	12/27/2005
6932889	Water treatment device and method A point of use water purification unit for continuously and completely purifying water at all point of use for removing all chemicals, killing all microorganisms; the device having a computer monitored and controlled system for degassing, super heating and exploding...	08/23/2005
6835229	Method and apparatus for clearing a powder accumulation in a powder delivery tube A system for monitoring coal flow through a coal delivery tube in a blast furnace fuel injection system is disclosed, which system automatically actuates a purge cycle for clearing accumulations of coal from a coal lance when a temperature drop indicative of an immi...	12/28/2004
6478846	Method and device for injecting reducing agents in a shaft furnace The invention relates to a method for injecting reducing agents into a shaft furnace in which the reducing agent is transported within a pneumatic delivery stream to the shaft furnace according to the flowing steps; a) dividing the delivery stream into a ...	11/12/2002
6280498	Synthetic resin fuel for making iron and method for making iron A synthetic resin fuel for stable production of pig iron in a blast furnace. It is in the form of cylindrical pellets, each measuring X mm in thickness and Y mm in diameter, with X and Y satisfying the three expressions of 3.0ࣘXࣘ10, 2ࣘYࣘ20, and ...	08/28/2001
6264723	Method for manufacturing steel A method and a plant for manufacturing steel in an electric steel furnace wherein the electric steel furnace is charged with at most 70% scrap and with at most 60% liquid pig iron obtained in a mini-blast furnace, and optionally with additional iron carri...	07/24/2001
6231638	Process for producing metal from metal ores The invention concerns a process for producing metal from metal ores, in particular crude or pig iron from iron ore, wherein the ore which contains metal oxides is brought into contact with a reducing gas which contains carbon and/or hydrogen from solid, ...	05/15/2001
6206949	NOx reduction using coal based reburning A method for reducing the NOx content of combustion gases from combustion in a commercial furnace wherein hot oxygen and carbonaceous fuel such as pulverized coal react to form a fuel-rich gas phase mixture which is then used to reduce NOx to nitrogen gas...	03/27/2001
6090182	Hot oxygen blast furnace injection system A method for providing a blast stream into a blast furnace wherein fuel and hot oxygen are provided into the blast air, the hot oxygen being at a temperature and velocity each greater than that of the blast air, and wherein the fuel and hot oxygen begin t...	07/18/2000
5772727	Process for the production of metal from metal ores A process of producing metal from a metal ore containing metal oxides includes the steps of: obtaining a reducing gas containing at least one of carbon and hydrogen from solid substances containing at least one of carbon and hydrocarbons; bringing the ore...	06/30/1998
5522916	Method and apparatus for injecting liquid oxygen A high-speed jet of liquid oxygen (21) with a speed higher than 100 meters per second is delivered into the tuyeres of a blast furnace of cupola furnace together with pulverised carbon. The jet reaches the opposite wall of the cavity (9) formed at the out...	06/04/1996
5516356	Process and apparatus for feeding a second stream of pulverulent materials into a pneumatic conveying line carrying a first controllable flow of pulverulent materials A process for feeding a second stream of pulverulent materials into a pneumatic conveying line carrying a first controllable flow of pulverulent materials is presented. The second stream of pulverulent materials is fed at a controlled rate and the control...	05/14/1996
5451034	Device for the injection of pulverized coal into a blast furnace crucible A method and device is provided for the combined injection of pulverized coal and a gaseous oxidant into a crucible of a shaft furnace, especially a blast furnace, through a hot-air blast tuyere. In the region of the nozzle end of the tuyere in the crucib...	09/19/1995
5403378	Method and apparatus for protecting an injection device disposed in a hot blast conduit of a blast furnace To prevent burn-back at a coal dust injection lance which projects into a hot blast conduit of a blast furnace, cooling is effected using atomized coolant. Water is preferred as the coolant. The carrier gas used for the atomized water is either air or the...	04/04/1995
5350439	Process and apparatus for the replacement of a first flow of gas accompanying a flow of particles with a second flow of gas A first flow of gas (C) accompanying a flow of solid particles (S), is sent at supersonic speed into a first conduit (1) prolonged by a third conduit (8) and intersecting a second conduit (6) supplying a second flow of gas (G) which is deflected into the ...	09/27/1994
5333840	Blast pipe and tuyere arrangement for a blast furnace and method Fuel and combustion gas are supplied to the blast pipes and tuyeres of a blast furnace through injection lances which have an inner tube and an outer tube. The inner tube is generally used to carry the fuel, while the space formed between the inner and ou...	08/02/1994
5123632	Method for the pneumatic injection of metered quantities of powdered substances into a chamber at a variable pressure The method consists in forming in a single metering device a pneumatic mixture comprising the powdered substances and the propellent gas, in propelling this mixture through a common main 18 into a distributor 20 in which the mixture is split into secondar...	06/23/1992
4985075	Method for manufacturing chromium-bearing pig iron A method for manufacturing a chromium-bearing pig iron comprises the steps of charging cold bond pellets, iron ore and coke lumps into a blast furnace from above and blowing a gas containing more than 50% oxygen therein and tuyere nose flame temperature c...	01/15/1991
4921532	Ironmaking by means of a smelting shaft furnace A method of ironmaking by means of a smelting shaft furnace including the steps of supplying iron ore and coke to the top of the furnace; and injecting coal and oxygen into the smelting zone of the furnace to promote combustion, to control reaction temper...	05/01/1990
4917727	Method of operating a blast furnace According to a method of operating a blast furnace, pure oxygen, pulverized coal, and a temperature control gas which substantially does not contain nitrogen are blown from tuyeres. A preheating gas which substantially does not contain nitrogen is blown f...	04/17/1990
4844737	Method for operating a blast furnance by blowing pulverized coal A method for operating a blast furnace, comprising the steps: charging iron ores and cokes through a furnace top into the blast furnace; blowing in gas containing 40 vol. % or more oxygen together with pulverized coal through tuyeres into the blast furnan...	07/04/1989
4780136	Method of injecting burning resistant fuel into a blast furnace A method of injecting burning resistant fuel into a blast furnace, which includes the steps of supplying a hot blast air having a temperature of at least 810° C. into a blast furnace, injecting the burning resistant fuel into the hot blast air, and injec...	10/25/1988
4700930	Device for injecting pulverulent material, such as coal, in a blast furnace The invention relates to a device for injecting pulverulent material, such as coal, into a blast furnace. The device includes a hot blast tuyere issuing into the blast furnace, a nozzle fixed against said tuyere and co-axial thereto for bringing the hot b...	10/20/1987
4529440	Chemicals from coal A process for the coproduction of molten ferrous metals and hydrogen-carbon monoxide adducts from a blast furnace whose hot blast is replaced by oxygen and a suspension of coal in recycle gas; whereby the top gas or gas removed from the stack at a point b...	07/16/1985
4490171	Method and apparatus for injecting pulverized fuel into a blast furnace A method for injecting a pulverized fuel into a blast furnace uses a pulverulent fuel injecting burner which is protruded into a blow pipe through a wall thereof near the tuyere of a blast furnace. The burner injects a pulverized fuel into the blast furna...	12/25/1984
4428769	Process for injecting a reducing agent including ash-bearing bituminous coal into the hearth of a blast furnace In a process for injecting a fine-grain carbon carrier including ash-bearing bituminous or hard coal into a blast furnace hearth, use is made of a mix of fine-grain bituminous coal and at least one other solid fine-grain ash-bearing carbon carrier. The co...	01/31/1984
4395166	Fluidization and distribution A pulverized material, particularly coal or lignite, is maintained in a fluidized state in a storage container and is released therefrom into a carrier gas stream. The gas for causing fluidization and maintaining a pressure in the container which is great...	07/26/1983
4389244	Method of supplying pulverized fuel mixture to blast furnace tuyeres A method of supplying a pulverized fuel mixture to blast furnace tuyeres comprises batch loading the pulverized fuel mixture into a discharging chamber 8 being under gauge pressure, and subsequent continuous distributing thereof from this chamber, and tra...	06/21/1983
4306507	Method of controlling the heat balance in a shaft-type metallurgical furnace The heat balance in a shaft furnace, e.g. a blast furnace for the production of iron, is controlled by feeding peat in a comminuted form, i.e. with a mean particle size of 0.05 to 1 mm and a water content of less than 25%, into the blast furnace. The peat...	12/22/1981
4266968	Process for injecting brown coal into a blast furnace In a process for injecting fine-grain brown coal or lignite into a blast furnace through tuyere arches thereof, the initial speed at which coal dust, after leaving the supply conduit, moves towards the center of the blast furnace hearth is substantially l...	05/12/1981
4248627	Process for the manufacture and use of high purity carbonaceous reductant from carbon monoxide-containing gas mixtures Substantially ash-free carbonaceous reductant for use in reduction processes is made by recovering carbon from unused carbon monoxide. The carbon monoxide contacts a catalyst which promotes formation of carbon on the catalyst. Since the off-gases from man...	02/03/1981
3971654	Method of injecting pelletized coal through blast furnace tuyeres Fueling a blast furnace by the injection of pelletized coal through hot blast tuyeres improves blast furnace operating efficiency. Pelletizing provides means for using fine coal, more effective removal of pyritic sulfur and an improved fuel which rolls ra...	07/27/1976
3966457	Method of operating a blast furnace using coal auxiliary combustible Coal of a granulometry of 0.1 to 20 mm is injected into the blast-pipe manifold surrounding an iron-smelting blast furnace. The temperature of between 900°C and 1300°C in this manifold thermally disintegrates the coal by vaporizing volatile components s...	06/29/1976

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Class 75/460 - Carbonaceous