| Patents for C21B 9 - Stoves for heating the blast in blast furnaces (1,401) |
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| 05/25/2005 | CN1618991A Exchange technology of hot air furnace hot air short pipe |
| 05/04/2005 | EP1527306A2 Furnace, method and monitoring system for monitoring its condition |
| 04/28/2005 | US20050087038 Methods and apparatuses for integration of a blast furnace and an air separation unit |
| 04/27/2005 | CN1198944C Hot air stove |
| 03/30/2005 | CN1600868A Warm up method of combustion supporting air through coal gas from blast furnace hot blast stove in high temperature |
| 01/26/2005 | CN1570152A High wind temperature obtaining method using pure blast furnace gas combustion |
| 01/19/2005 | CN1566369A Cooling process for hot-air stove |
| 12/30/2004 | US20040261578 Providing a plant or a plant seed;providing a fungal or bacterial organism, combining the organism with the plant or the plant seed under conditions effective for the organism to colonize;introducing the plant-organism system to the polluted environmental area, thereby remediating the environmental area |
| 12/29/2004 | CN1557972A Optimizing control method for hybrid type blast furnace hot blast stove |
| 12/22/2004 | CN1556226A Making method of composite brick |
| 11/17/2004 | CN2656427Y Blast furnace air blow branch pipe |
| 11/17/2004 | CN2656426Y Top combustion type hot air furnace composite burning port device |
| 11/11/2004 | US20040222574 Preheating cold blast air of a blast furnace for tempering the hot blast temperature |
| 10/21/2004 | WO2004089831A2 Stable self-organizing plant-organism systems for remediating polluted soils and waters |
| 10/20/2004 | CN1172008C Equipment and method for preheating gas and combustion-promoting air of blast furnace |
| 10/06/2004 | CN2646153Y Tilt motivated ball valve |
| 09/15/2004 | CN1528918A Apparatus for increasing hot-air temperature for hot-blast stove of blast-furnace |
| 08/25/2004 | CN2635677Y Air and gas double-preheating hot-blast stove |
| 08/18/2004 | CN1521143A Highly regenerative low creeping fireproof ball |
| 08/18/2004 | CN1521140A Highly regenerative fireproof ball |
| 06/16/2004 | CN1153835C Efficient airheater group for blast furnace and method for collecting its hot wind for blast furnace |
| 04/22/2004 | WO2004015349A3 Furnace, method and monitoring system for monitoring its condition |
| 04/07/2004 | CN2609937Y Blind plate type inserted plate valve |
| 03/31/2004 | CN1485446A Thermal state method for restoring branch pipe orifice of blast furnace bustle pipe |
| 02/19/2004 | WO2004015349A2 Furnace, method and monitoring system for monitoring its condition |
| 02/17/2004 | US6692549 Feeding feed air to the blast furnace; removing a first portion of feed air to the blast furnace; separating oxygen rich stream and second stream in air separation unit; heating second stream; expanding second stream to recover energy |
| 02/11/2004 | CN2603090Y Hot blast adjuster for blast furnace |
| 02/04/2004 | EP1114195B1 A direct smelting process |
| 02/04/2004 | CN1472452A Sealer of liquid state alloy multiring connectopr composed by valve cover and valve seat |
| 01/07/2004 | CN1465720A Heat storage heneycomb type high temp wind generator |
| 12/17/2003 | CN2592652Y Hot-blast stove blast main heat-insulating and heat-preserving structure |
| 12/10/2003 | CN2591047Y Hot-blast furnace waste gas comprehensive utilizing device |
| 11/19/2003 | CN2586701Y Novel high-performance hot-air furnace |
| 11/19/2003 | CN1456688A Dustproof hotblast heater |
| 11/05/2003 | CN1126910C Ceramic burner for gases and regenerative heat generator equiped with the same burner |
| 10/15/2003 | CN2579906Y Gas and air double preheating device of mixing burning furnace high temperature smoke and hot-blast furnace low temperature smoke |
| 10/01/2003 | EP1348769A1 Regenerative hot blast stove and cross over conduit for such a regenerative hot blast stove |
| 09/03/2003 | CN2570298Y Evenly flowing seven-hole checker brick |
| 09/03/2003 | CN1439726A Hot air stove |
| 08/28/2003 | WO2003071555A1 Blast-furnace stove |
| 08/13/2003 | CN1117604C Solid electrolyte systems for use with furnaces |
| 07/02/2003 | EP1114195A4 A direct smelting process |
| 06/25/2003 | CN2557528Y Hot blast pipe for small size pudding furnace |
| 06/25/2003 | CN2557527Y High-effect pre-combustion type hot-blast furnace |
| 05/14/2003 | CN1417351A Cast refractory material for blast furnace draught pipes (gooseneck pipe, bent tube and direct-firing pipe) |
| 04/30/2003 | CN1414117A Composite heat accumulator used for hot blast furnace |
| 01/08/2003 | CN2529874Y Air burning-aid self preheating top combustion stove |
| 01/02/2003 | US20030000342 Methods and apparatuses for integration of a blast furnace and an air separation unit |
| 12/18/2002 | CN1385542A Intelligent control system for hot-blast furnace |
| 12/11/2002 | CN2525097Y Air discharge calve |
| 11/12/2002 | US6478846 Method and device for injecting reducing agents in a shaft furnace |
| 11/05/2002 | US6475264 Direct smelting process |
| 09/25/2002 | CN2512787Y Two section type hot-air furnace |
| 07/09/2002 | US6415811 Cooled slider plate, particularly a water-cooled hot air slider plate |
| 06/26/2002 | CN1355323A Equipment and method for preheating gas and combustion-promoting air of blast furnace |
| 05/21/2002 | US6389776 Gas permeable refractory brick for use in regenerative heat exchanger and hot grid formed therefrom |
| 05/15/2002 | CN1084792C Method for preheating air and coal gas for high-temp. blast furnace |
| 05/01/2002 | CN1083887C Method and device for injecting reducing agents in shaft furnace |
| 03/13/2002 | CN1080866C Combined installation of a metal production unit and a unit for separation air gas |
| 02/28/2002 | WO2001069156A3 Gas permeable refractory brick for use in regenerative heat exchanger and hot grid formed therefrom |
| 02/13/2002 | CN1079116C Cold-wind cooler for burner of pre-combustion hot air furnace and its control method |
| 01/08/2002 | CA2239441C Solid electrolyte systems for use with furnaces |
| 01/01/2002 | US6334265 Process for the operation of a regenerator and regenerator |
| 11/14/2001 | CN1074792C Process and plant for supplying blast furnace |
| 10/24/2001 | CN2455729Y High temperature hot blast stove for blast furnace |
| 10/17/2001 | EP1046011B1 Ceramic burner for gases and regenerative heat generator provided with the said burner |
| 10/10/2001 | CN2453014Y Hot blast adjusting protection device for blst furnace |
| 10/10/2001 | CN2453013Y Full lining of inner body type hot blast valve |
| 09/20/2001 | WO2001069156A2 Gas permeable refractory brick for use in regenerative heat exchanger and hot grid formed therefrom |
| 09/19/2001 | CN1313405A Efficient airheater group for blast furnace and method for collecting its hot wind for blast furnace |
| 09/12/2001 | CN1312864A A direct smelting process |
| 08/29/2001 | EP1023468B1 Method and device for injecting reducing agents in a shaft furnace |
| 08/21/2001 | US6276928 Method of retrofitting a furnace to provide oxygen enrichment |
| 08/16/2001 | EP1123754A1 Method for decontaminating cowpers |
| 08/15/2001 | CN2443002Y Hot air delivering pipe suction expansion and straining device |
| 07/24/2001 | US6264466 Method for increasing efficiency and productivity of a furnace |
| 07/11/2001 | EP1114195A1 A direct smelting process |
| 06/28/2001 | DE19961739A1 Heisswindschieber Hot blast valve |
| 06/27/2001 | EP1111070A1 Hot-blast slide valve |
| 05/16/2001 | CN2430449Y Mixing air cut off valve for blast furnace |
| 01/31/2001 | CN1282408A Ceramic burner for gases and regenerative heat generator provided with said burner |
| 01/16/2001 | USRE37014 Combined installation of a metal production unit and a unit for the separation of air gas |
| 01/10/2001 | CN1279724A Method and device for injecting reducing agents in a shaft furnace |
| 01/10/2001 | CN1060524C Dry-off oven device for blast furnace |
| 12/13/2000 | CN1276433A High-air temp hot-blast stove for blast furnace |
| 12/13/2000 | CN1059468C Gate brick, its masonry method and brick masonry mending method for regenerative chamber of hot-blast stove |
| 12/06/2000 | EP1058056A1 Oxygen enrichment system for regenerative glass furnace |
| 12/01/2000 | CA2310390A1 Method and system for increasing the efficiency and productivity of a high temperature furnace |
| 10/25/2000 | EP1046011A1 Ceramic burner for gases and regenerative heat generator provided with the said burner |
| 10/11/2000 | CN2400452Y Disturbance blast-furnace direct-blasting pipe |
| 10/05/2000 | WO2000058526A1 Column-less air heater |
| 09/26/2000 | US6122932 Combined installation of a furnace and an air distillation apparatus and process for using the same |
| 09/05/2000 | US6113389 Method and system for increasing the efficiency and productivity of a high temperature furnace |
| 08/02/2000 | EP1023468A1 Method and device for injecting reducing agents in a shaft furnace |
| 07/25/2000 | US6092300 Process for the operation of a regenerator and regenerator |
| 06/21/2000 | CN1053701C Technology for double preheating by using blast-furnace hot-blast stove gas, and combustion-supporting air |
| 06/07/2000 | CN2381646Y Air cooler for burner of top combustion hot air furnace |
| 06/07/2000 | CN1255967A Combined installation of furance and air distrillation appts. and use method |
| 06/06/2000 | CA2091116C Ceramic burner for a hot-blast stove of a blast furnace |
| 05/31/2000 | CN2380576Y Device for uniformly distributing lower air-flow of blast heater |