| Patents for C21B 5 - Making pig-iron in the blast furnace (3,135) |
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| 04/18/1989 | US4822411 Integrated steel mill arrangement |
| 03/30/1989 | DE3733999A1 Blowing coal dust into a cupola furnace |
| 03/15/1989 | CN1031719A Compound ferromanganese pellet and its application in blast-furnace iron smelting |
| 03/14/1989 | CA1251225A1 Continuous casting slag |
| 03/08/1989 | EP0306026A2 Method for operating blast furnace |
| 02/28/1989 | CA1250427A1 Method of operating a metallurgical furnace and a metallurgical furnace apparatus |
| 02/07/1989 | US4802796 Pressure-reducing device for particulate material |
| 02/01/1989 | EP0302041A2 Method for operating a blast furnace |
| 02/01/1989 | EP0302000A2 Process for reducing agglomerate disaggregation |
| 01/17/1989 | CA1248905A1 Process for transporting particulate material |
| 01/05/1989 | DE3720648A1 Method for converting a blast furnace into a smelting gasifier, and use of air as a gasificant |
| 01/03/1989 | CA1247864A1 Process for the production of pig iron |
| 12/28/1988 | EP0296188A1 Process and device for introducing additives into a cupola or shaft furnace. |
| 12/27/1988 | US4793857 Melt-down gasifier and iron reduction unit |
| 12/27/1988 | US4793855 Process for the gasification of sewage sludge |
| 12/06/1988 | US4788917 Shaft furnace bypass system |
| 11/17/1988 | WO1988009109A1 Plasma fired feed nozzle |
| 11/09/1988 | EP0289965A2 Device for modifying the cross-sectional area of a pneumatic transport conduit, and its use in the injection of solid fuels into a shaft furnace |
| 11/08/1988 | US4783010 Method and device for pulverizing a solid fuel material |
| 10/25/1988 | US4780136 Method of injecting burning resistant fuel into a blast furnace |
| 10/25/1988 | CA1243489A1 Process and installation for the continuous control of blast-furnaces |
| 10/11/1988 | US4776884 Eddy current detector |
| 09/20/1988 | US4771993 Device for injecting divided solid materials in a smelting blast furnace |
| 09/15/1988 | DE3727576C1 Process for reprocessing fine-grained ferrous by-products from steelworks and metallurgical works to form lumpy material for use in blast furnaces |
| 08/30/1988 | US4767258 Process and apparatus for charging a shaft furnace |
| 08/30/1988 | US4767243 Pneumatic conveying system with directional change of a gas/particulate material stream |
| 08/24/1988 | CN88100068A Turere of blast furnace |
| 08/17/1988 | EP0278221A1 Tuyere of blast furnace |
| 08/10/1988 | EP0277845A1 Plasma torch with a longitudinally moving up-stream arc root,and method for controlling its displacement |
| 08/10/1988 | EP0277360A1 Method for operating a blast furnace |
| 08/10/1988 | CN85100449A Coal-steam composite blast technique for blast furnace |
| 08/04/1988 | DE3701571A1 Digestion of raw phosphates even in a fusion gasifier, with addition of scrap and steelworks slag |
| 08/02/1988 | US4761793 For a furnace |
| 08/02/1988 | CA1239961A1 Switching valve and a pneumatic transportation system for powdered or granular material with such a switching valve for selection of different transport paths |
| 08/02/1988 | CA1239797A1 Method for steel manufacture |
| 07/27/1988 | CN87105991A Blast furnaces |
| 07/26/1988 | US4759532 Lance for injecting highly-loaded coal slurries into the blast furnace |
| 07/20/1988 | CN87105969A Process for operating blast furnaces |
| 07/19/1988 | US4758118 Process and apparatus for the metered introduction of fine-grain solid materials into an industrial furnace particularly a blast furnace or cupola furnace |
| 07/19/1988 | US4758117 Method for the transportation of a particulate material at controlled rate |
| 07/14/1988 | WO1988005149A1 Process and device for introducing additives into a cupola or shaft furnace |
| 07/06/1988 | EP0273420A2 A blast furnace method |
| 07/06/1988 | CN87108358A Method and device of charging admixture into shaft furnace and cupola |
| 06/22/1988 | EP0271711A2 Process for producing pig iron in a blast furnace |
| 06/16/1988 | WO1988004329A1 A method of producing liquid crude iron and high-grade top gas |
| 06/16/1988 | DE3642103A1 Gasification of domestic refuse, hazardous waste and even highly toxic waste in a fusion gasifier |
| 06/15/1988 | EP0271464A2 A method of producing liquid crude iron and high-grade top gas |
| 06/08/1988 | EP0270013A2 Process for injection by pneumatic means metered amounts of pulverulent materials into a vessel maintained at variable pressure |
| 05/25/1988 | CN87105050A Blast furnace smelting method for rich manganese slag |
| 05/24/1988 | CA1236975A1 Method for producing a carbonaceous solid reductant for direct reduction of iron ore |
| 05/03/1988 | CA1236151A1 Electric arc-fired blast furnace system |
| 04/27/1988 | CN87106397A Distributing process of high mixture ratior pellet for bell type-blast furnace |
| 04/13/1988 | EP0263119A1 Process and device for melt gasification |
| 04/07/1988 | DE3702875C1 Process for smelting crude iron and for producing process gas in blast furnaces |
| 03/30/1988 | EP0261432A1 Method for operating shaft furnace |
| 03/29/1988 | US4733619 Powder feeder |
| 03/08/1988 | CA1233859A1 Apparatus for introducing dosed quantities of pulverulent materials into a pneumatic propulsion fluid |
| 03/08/1988 | CA1233858A1 Apparatus for introducing dosed quantities of pulverulent materials into a pneumatic propulsion fluid |
| 03/08/1988 | CA1233780A1 System for controlling the contents and the filling of a distribution tank for pulverulent materials |
| 03/02/1988 | EP0258208A1 Iron and steel plant and process for its operation |
| 02/17/1988 | CN87203796U Podwer coal blowing device for blast-furnace |
| 02/02/1988 | CA1232133A1 Reheating process of blower gas for a blast furnace by means of a plasma generator |
| 01/27/1988 | EP0254661A1 Tuyere for blast furnace |
| 12/23/1987 | CN87103786A Method for mfg. chromium-bearing pig iron |
| 12/23/1987 | CN87103633A Method for controlling operation of blast furnace |
| 12/17/1987 | WO1987007705A1 Method and equipment for continuous feeding in separate phases in fuel furnaces, such as cupolas |
| 12/16/1987 | EP0249006A1 Method for manufacturing chromium-bearing pig iron |
| 12/02/1987 | EP0247235A1 Pressurized-air conveyor and metering device |
| 12/02/1987 | CN87103627A Method for controlling operation of blast furnace |
| 11/25/1987 | EP0246618A2 Method for controlling operation of a blast furnace |
| 11/25/1987 | EP0246517A1 A method for controlling an operation of a blast furnace |
| 11/17/1987 | US4707183 Method of operating a blast furnace with plasma heating |
| 11/17/1987 | US4706943 Connection device for plasma generators |
| 11/11/1987 | EP0244551A1 Integrated metallurgical plant |
| 11/11/1987 | CN86107880A Rapid adjustment method of cinder alkalinity and desulfation for iron-smelting blast furnace |
| 10/27/1987 | US4702288 Apparatus for the pneumatic injection of pulverulent materials into a pressurized vessel, and its application to the injection of powered coal into a shaft furnace |
| 10/27/1987 | US4702182 Process and apparatus for the injection by pneumatic means of metered amounts of pulverulent materials into a vessel which is under variable pressure |
| 10/27/1987 | CA1228482A1 Reduction of metal compounds |
| 10/20/1987 | US4700930 Device for injecting pulverulent material, such as coal, in a blast furnace |
| 10/13/1987 | US4699210 Apparatus for conveying particulate material from a pressurized container |
| 09/30/1987 | CN86103119A Start-up technology of blast furnace by blasting to the furnace bottom |
| 09/29/1987 | CA1227334A1 Pulverizing, drying and transporting system for injecting a pulverized fuel into a blast furnace |
| 09/24/1987 | WO1987005634A1 Process and device for melt gasification |
| 09/22/1987 | US4695315 Method of minimizing reduction disintegration of iron ores and iron ore agglomerates to be used as blast furnace burden |
| 09/09/1987 | EP0235562A2 Process and device for the measured supply of fine solid particles to an industrial furnace |
| 09/08/1987 | CA1226481A1 Process and apparatus for blowing carbon dust into an industrial furnace |
| 08/26/1987 | EP0233624A2 Apparatus for dosing pulverized solid materials, and use in the injection of dosed quantities of solid combustibles into a shaft furnace |
| 08/25/1987 | US4689076 Pulverization of coal by collisions |
| 08/18/1987 | CA1225687A1 Method of controlling substantially equal distribution of particulates from a multi-outlet distributor and an article constructed according to the method |
| 08/11/1987 | CA1225418A1 Device for the introduction of dosed quantities of pulverulent substances into a pneumatic propulsion fluid and use thereof for the injection of solid fuels into a shaft furnace |
| 07/02/1987 | DE3608150C1 Verfahren und Vorrichtung zur reduzierenden Schmelzvergasung Method and apparatus for reducing gassing |
| 06/30/1987 | CA1223620A1 Distribution of gas entrained particles |
| 06/16/1987 | US4673432 Process for the production of pig iron |
| 06/10/1987 | EP0125305B1 Process for minimizing the reduction disintegration of iron ores and iron ore agglomerates to be used as blast furnace burden |
| 06/02/1987 | US4670049 Oxygen blast furnace for direct steel making |
| 06/02/1987 | US4670048 Method for heating the reducing gas of a blast furnace by means of a plasma generator |
| 05/26/1987 | US4668285 Process and installation for the continuous control of a blast-furnace |
| 05/26/1987 | US4668130 Dense phase coal feeding system |
| 05/19/1987 | CA1222006A1 Apparatus for conveying particulate material from a pressurised container |
| 04/14/1987 | CA1220343A1 Method of minimizing reduction disintegration of iron ores and iron ore agglomerates to be used as blast furnace burden |