| Patents for C21B 5 - Making pig-iron in the blast furnace (3,135) |
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| 11/30/1994 | EP0626540A1 Method and device for the disposal of variously composed waste materials |
| 11/02/1994 | EP0622465A1 Method for producing metal from metal ores |
| 10/27/1994 | DE4313630A1 Process for producing metal from metal ores |
| 10/26/1994 | EP0621343A1 Operating a blast furnace using untreated top gas |
| 10/17/1994 | CA2094199A1 Operating a blast furnace using untreated top gas |
| 10/12/1994 | CN1093411A Metallurgical processes and apparatus |
| 10/05/1994 | EP0618302A1 Metallurgical processes and appartus |
| 10/05/1994 | EP0617739A1 Method for continuously melting down scrap metal |
| 10/05/1994 | CN1093160A Introduction of additiues in powder form into furnace |
| 09/30/1994 | CA2115625A1 Metallurgical processes and apparatus |
| 09/29/1994 | WO1994021831A1 Briquette to be used as slag-forming material in smelting furnaces and process for producing it |
| 09/28/1994 | CN1092814A Production of titanium-bearing cast iron from blast furnace titanium slag and furnace protection |
| 09/21/1994 | CN2177727Y Device for regulating temp. of blast furnace gas |
| 09/15/1994 | WO1994020642A1 Method for obtaining metal from a blast furnace or cupola furnace |
| 08/24/1994 | EP0611740A1 Titanium-containing aggregate and use thereof for increasing the durability of refractory funace walls |
| 08/17/1994 | EP0611212A1 Feeding of pulver additives in a furnace |
| 08/04/1994 | WO1994017214A1 Process for producing pig iron and cement clinker |
| 08/03/1994 | CN1090331A Process for producing molten pig iron or molten steel preproducts |
| 08/02/1994 | US5333840 Blast pipe and tuyere arrangement for a blast furnace and method |
| 07/06/1994 | EP0215088B1 Improvements in or relating to ironmaking by means of a smelting shaft furnace |
| 07/06/1994 | CN1025351C Raw materials mixed feeding blast furnace iron-smelting method |
| 06/09/1994 | WO1994012672A1 Process and device for producing pig iron from iron ore or for thermally and/or chemically treating an easily decomposable material |
| 06/09/1994 | CA2150456A1 Process and device for producing pig iron from iron ore or for thermally and/or chemically treating an easily decomposable material |
| 06/01/1994 | DE4240197A1 Verfahren zur Herstellung von Roheisen aus Eisenoxiden und Vorrichtung zur thermischen und/oder chemischen Behandlung eines leicht zerfallenden Materials oder zur Herstellung von Roheisen mittels dieses Verfahrens A process for producing pig iron from iron oxides and apparatus for the thermal and / or chemical treatment of a readily disintegrating material or for producing pig iron by this method |
| 06/01/1994 | CN1024810C Detoxication and comprehensive utilization of waste residue and gangue containing chromium titanium nickel and vanadium |
| 05/26/1994 | DE4238935A1 Conversion of organic waste to powdered prod. - by thermal embrittlement and comminution, esp. to produce combustion or gasification feeds |
| 05/11/1994 | EP0585422A4 Agricultural chemical distributor |
| 05/05/1994 | DE4304724C1 Additive for strengthening oven refractory walls - comprises residues from titanium di:oxide prodn, coal residues, iron- and iron oxide-contg residues |
| 04/28/1994 | WO1994009163A1 Method for continuously melting down scrap metal |
| 04/28/1994 | DE4317145C1 Scrap disposal in coke-fired shaft furnace - involves circulation of organic content gasification gas to metal content melting zone |
| 04/27/1994 | EP0594557A1 Process for producing molten pig iron or molten steel pre-products |
| 03/09/1994 | EP0585422A1 Agricultural chemical distributor |
| 02/15/1994 | US5285735 Control apparatus for injection quantity of pulverized coal to blast furnace |
| 02/09/1994 | CN1023717C Apparatus for enforced recovery of gas exhausted from top of blast furnace |
| 02/08/1994 | US5284187 Method and device for treating powder coal in a solid-fuel injection installation |
| 01/19/1994 | CN1080960A Method and device for the injection of pulverised coal into a blast-furnace crucible |
| 01/12/1994 | CN1080659A Waste air recoverying and utilizing method and device for hot-air furnace |
| 01/05/1994 | EP0576869A2 Method and apparatus for injecting pulverized coal into a blast furnace |
| 01/05/1994 | DE4301977C1 Asbestos disposal process - with modification of asbestos by high temp. heating by injection of shredded asbestos contg. material into melting zone of metallurgical shaft furnace |
| 01/02/1994 | CA2098514A1 Method and device for the injection of pulverised coal into a blast furnace crucible |
| 12/09/1993 | WO1993024399A1 Cascading pressure continuous blow bottle |
| 11/30/1993 | US5265983 System for continuously transporting find solids in dense phase |
| 11/24/1993 | EP0571358A1 Process for the direct reduction of particulate material containing iron oxide |
| 11/09/1993 | US5259594 Hot dust recycling apparatus |
| 11/03/1993 | EP0567513A1 Blast pipe and tuyere arrangement. |
| 10/20/1993 | EP0565695A1 Method and device for protecting a blowing device fitted in the hot-blast main of a blast furnace |
| 10/14/1993 | WO1993020244A1 Fines injection |
| 10/13/1993 | EP0564713A2 Process for solidifying powders containing metal, apparatus for solidifying and obtained solids |
| 09/14/1993 | US5244490 As fuel for melting, calcium carbonate filler |
| 09/14/1993 | US5244489 Compression, separation |
| 09/02/1993 | WO1993016589A1 Agricultural chemical distributor |
| 08/26/1993 | DE4205096A1 Solid and liq. waste recovery - comprises adding dry matter contg. top gas dust to homogenised mixt. for thermal processing |
| 08/18/1993 | CN1021833C Blast furnace operation management method and apparatus |
| 08/11/1993 | EP0554673A2 Burner for a shaft furnace |
| 08/11/1993 | EP0358711B1 Plasma fired feed nozzle |
| 08/10/1993 | US5234490 Operating a blast furnace using dried top gas |
| 08/04/1993 | CN1074939A Process for smelting blast-furnace slag containing titanium oxide |
| 07/13/1993 | US5227117 Apparatus for blast furnace fuel injection |
| 06/23/1993 | EP0547051A1 Method using a catalytic material to improve the heat balance and the gas of a blast furnace |
| 06/23/1993 | CN1021348C Method for smelting reduction of ni ore |
| 06/22/1993 | US5221512 Apparatus for preheating and removing organic materials from scrap iron |
| 06/09/1993 | EP0545241A1 Process for thermic valorisation of waste materials |
| 06/03/1993 | DE4139512A1 Thermal recycling of household and industrial waste - by pyrolysis in absence of air, comminution, sizing to obtain coke-like enriched fines, degasifying using oxygen-contg. agent and gas purificn. |
| 05/19/1993 | EP0542717A1 Blast furnace operation management method and apparatus |
| 05/13/1993 | WO1993009254A1 Method and device for protecting a blowing device fitted in the hot-blast main of a blast furnace |
| 05/06/1993 | DE4136274A1 Verfahren und vorrichtung zum schutz einer in einer heisswindleitung eines hochofens angeordneten einblasvorrichtung Method and device for protecting a hot wind in a line of high furnace arranged bubbler |
| 04/13/1993 | CA1315991C Process for injecting, by pneumatic means, metered quantities of pulverulent material into a chamber which is under variable pressure |
| 03/23/1993 | US5196050 Weighing |
| 02/16/1993 | US5186740 Method for preheating scrap iron by pyrolysis of resinous residues contained therein, with total recovery of their energy content and improvement of the steelmaking cycle |
| 01/13/1993 | EP0522331A2 Disposal of contaminants present in scrapped auto-mobiles or apparatuses |
| 01/13/1993 | CA2072778A1 Disposal method for organic and inorganic nonmetallic ancillary materials from used vehicles, used appliances and the like |
| 12/17/1992 | DE4115771A1 Desulphurising process for pig iron@ in blast furnace - by injection of coal dust and magnesium@ dust to which alkaline materials can be added |
| 12/16/1992 | CN2124916U Pulverulent coal gasification burner for blast furnace wind inlet spray |
| 12/15/1992 | CA1311532C Device for the position-fixing and the removal of a plasma torch on an apparatus functioning under a pressure and a temperature inhibiting direct intervening |
| 12/09/1992 | CN1066886A Method of water spray wet addition and blowing for iron-smelting blast furnace |
| 12/01/1992 | CA1310826C Method for operating a melt-down gasifier and melt-down gasifier for the implementation of said method |
| 11/10/1992 | US5161967 Process and device to feed additives into a shaft or cupola furnace |
| 11/10/1992 | CA1310075C Device and process for the positioning and retrieval of a plasma torch in hostile pressure and temperature conditions |
| 10/27/1992 | US5158668 Preparation of recarburizer coke |
| 10/20/1992 | CA1308917C Method for manufacturing chromium-bearing pig iron |
| 10/07/1992 | CN1065098A Mew bituminous coal blowing technology of heavy blast furnace |
| 09/23/1992 | EP0504581A2 Process and device for the treatment of pulverulent coal in an installation for injecting solid fuels |
| 09/16/1992 | EP0503423A1 Process and apparatus for fluidising and the pneumatic transport of finely granulated material |
| 09/09/1992 | CN1064314A Transport method for concentrate phase coal spray in blast furnace |
| 08/20/1992 | DE4104252A1 Blast furnace which disposes of carbon rich environmental waste prods. - uses liquefied or powered waste prods. in prodn. of pig iron@ without release of dioxin(s) |
| 08/13/1992 | DE4104072A1 Recycling roll scale - grinds collected scale to be used with coal as fuel dust blown into blast furnace |
| 08/12/1992 | CN1063508A Detoxication and comprehensive utilization of waste residue and gangue containing chromium titanium nickel and vanadium |
| 08/06/1992 | WO1992013107A1 Blast pipe and tuyere arrangement |
| 08/06/1992 | WO1992013106A1 Method using a catalytic material to improve the heat balance and the gas of a blast furnace |
| 07/08/1992 | EP0493752A1 Process and apparatus for reinjecting hot dusts |
| 07/07/1992 | US5127940 Self-fluxing pellets to be charged into blast furnace, and method for producing same |
| 07/07/1992 | US5127939 Synthetic olivine in the production of iron ore sinter |
| 07/07/1992 | US5127346 Burner arrangement for the combustion of fine-grained to dusty solid fuel |
| 07/01/1992 | CN1062379A Apparatus for enforced recovery of gas exhausted from top of blast furnace |
| 06/23/1992 | US5123632 Method for the pneumatic injection of metered quantities of powdered substances into a chamber at a variable pressure |
| 06/17/1992 | CN1017083B Method and device of charging admixture into shaft furnace and cupola |
| 06/03/1992 | EP0488318A2 Control method of and apparatus for material charging at top of blast furnace |
| 06/02/1992 | CA1302518C Plasma fired feed nozzle |
| 05/19/1992 | CA1301259C Plasma torch having a longitudinal mobile arc root, and process for controlling the displacement thereof |
| 05/14/1992 | WO1992007964A1 A method of recirculating fine waste products |