| Patents for C21B 5 - Making pig-iron in the blast furnace (3,135) |
|---|
| 11/25/1998 | EP0632841B1 Process for producing pig iron and cement clinker |
| 11/11/1998 | EP0876572A1 Continuous high pressure solids pump system |
| 11/11/1998 | EP0585422B1 Agricultural chemical distributor |
| 10/29/1998 | WO1998021536A3 Operating method and device for a shaft furnace |
| 10/28/1998 | CN1040460C Process and appts. for producing molten pig iron or molten steel preproducts |
| 10/14/1998 | EP0870065A1 A method for the pneumatic delivery of plastics-containing materials into a reaction vessel |
| 10/14/1998 | CN1040229C Process for producing pig iron and cement clinker |
| 10/06/1998 | US5817164 Method and apparatus for making feedstock for steel making |
| 09/23/1998 | CN1194010A Method for improving conveyability of pulverized coal |
| 09/16/1998 | CN1039828C Method for disposal/recycling of gas cylinders containing filling material |
| 09/15/1998 | US5807420 Process for reduction of iron with solid fuel objects as amended by exam |
| 09/09/1998 | EP0862657A1 Duplex procedure for the production of metals and metal alloys from oxidic metal ores |
| 09/09/1998 | EP0831984A4 Process for recovering iron from iron-rich material |
| 08/12/1998 | CN1039498C Blast furnace comprehensive deterministic system |
| 08/05/1998 | EP0856068A1 Process for conveying a finely divided solid |
| 08/04/1998 | US5788921 Apparatus for electric steelmaking |
| 07/28/1998 | US5785734 Residue and waste treatment process |
| 07/16/1998 | DE19700768A1 Economical disposal of gases leaking from e.g. doors of metallurgical coke production batteries |
| 07/15/1998 | EP0755736A4 Improvements in metallurgical conversion |
| 06/30/1998 | US5772727 Process for the production of metal from metal ores |
| 06/25/1998 | WO1998027237A1 Ferrite- and calcium-based flux, mixture for its production, and use thereof |
| 06/17/1998 | EP0714451B1 Method for the disposal/recycling of gas cylinders containing filling material |
| 06/09/1998 | CA2131428C Alloy material addition method and apparatus for smelting and melting furnaces |
| 05/27/1998 | EP0670910B1 Process and device for producing pig iron from iron ore or for thermally and/or chemically treating an easily decomposable material |
| 05/22/1998 | WO1998021536A2 Operating method and device for a shaft furnace |
| 05/22/1998 | WO1998021295A1 Blast furnace fuel from reclaimed carbonaceous materials |
| 05/19/1998 | US5752993 Blast furnace fuel from reclaimed carbonaceous materials and related methods |
| 05/14/1998 | DE19646802A1 Verfahren und Vorrichtung zum Betreiben eines Schachtofens Method and apparatus for operating a shaft furnace |
| 05/13/1998 | EP0740695A4 Utilizing discarded carbon |
| 05/07/1998 | WO1998018969A1 Process for returning finely dispersed solids discharged with a carrier gas from a reactor vessel |
| 05/05/1998 | US5746804 Oxygen and air in tubes, feeding particles, flanges and nozzles |
| 04/22/1998 | EP0837143A1 Method for improving conveyability of pulverized coal |
| 04/22/1998 | CN1038147C Gas supply and control device for spraying oxygen in blast furnace |
| 04/22/1998 | CN1038146C Computerized blast furnace smelting expert system method |
| 04/15/1998 | EP0617739B1 Method for continuously melting down scrap metal |
| 04/14/1998 | US5738704 Mixture comprising silicon-containing iron-carbon alloy and metal oxide; earlier and uniform carbon oxidation, high decarbonizing at low bath temperature |
| 04/14/1998 | US5738694 A compressed briquet for waste recycling comprising polymeric binder, carbon for reduction, kaolin filler and calcium carbonate hardener |
| 04/08/1998 | CN1178560A Method for operating shaft furance |
| 04/01/1998 | EP0831984A1 Process for recovering iron from iron-rich material |
| 03/26/1998 | WO1998012357A1 Process for monitoring the operation of a device for feeding an abrasive medium by means of a fluid |
| 03/26/1998 | CA2266328A1 Process for monitoring the operation of a device for feeding an abrasive medium by means of a fluid |
| 03/25/1998 | CN1177009A Method for injecting synthetic resin into furnace and apparatus therefor |
| 03/18/1998 | EP0829544A1 Method for blowing synthetic resin into furnace and apparatus therefor |
| 03/12/1998 | WO1998010034A1 Apparatus for carbonizing material |
| 03/04/1998 | EP0826130A1 Process for melting of metal materials in a shaft furnace |
| 02/25/1998 | CN1037527C Method and device for injection of pulverised coal into balst-furnace crucible |
| 02/18/1998 | CN1173542A Blast furnace operating consulting system |
| 02/12/1998 | DE19638346C1 Verfahren zur Überwachung des Betriebs einer Vorrichtung zur Zuführung eines abrasiven Mediums mit Hilfe eines Fluids Method for monitoring the operation of a device for feeding an abrasive medium by means of a fluid |
| 02/03/1998 | US5714113 Apparatus for electric steelmaking |
| 02/03/1998 | US5713983 Degasification; comminution |
| 01/29/1998 | WO1998003438A1 Process and device for returning scrap into cupola furnace |
| 01/28/1998 | CN1171807A Method for coking coal |
| 01/22/1998 | CA2193539A1 Procedure to produce a slag conditioner material for electric arc and ladle furnaces based on vermiculite and dolomite mix |
| 01/14/1998 | EP0818543A1 Method for operating shaft furnace |
| 01/02/1998 | DE19629099A1 Ceramic product production |
| 12/31/1997 | CN1036856C Burner for combustion of fine-grained to dusty solid fuels |
| 12/16/1997 | US5698009 Method for agglomerating pre-reduced hot iron ore particles to produce ingot iron |
| 12/11/1997 | WO1997046718A1 Device and process for feeding coal into a shaft furnace |
| 12/10/1997 | CN1167156A Process for producing molten pig iron or molten steel preproducts |
| 11/26/1997 | CN1166184A Scrap melting method |
| 11/19/1997 | CN1165198A Blast furnace gas temp. regulation technology system |
| 11/05/1997 | EP0804298A1 Residue and waste treatment process |
| 10/16/1997 | WO1997038142A1 Desulphurising calcium carbide blend |
| 10/02/1997 | WO1997036009A1 Pulverized coal carriability improver |
| 09/23/1997 | US5669955 Reduction |
| 09/17/1997 | CN1159834A Transportability improver for pulverized coal |
| 09/12/1997 | WO1997033134A1 Process for melting of metal materials in a shaft furnace |
| 09/12/1997 | CA2217995A1 Process for smelting metallic raw materials in a shaft furnace |
| 09/03/1997 | EP0792938A1 Scrap melting method |
| 08/28/1997 | DE19606575A1 Evaluating residues and waste material in blast furnace |
| 08/27/1997 | EP0791039A1 Method for coking coal |
| 08/19/1997 | US5657704 Continuous high pressure solids pump system |
| 08/07/1997 | DE19603580A1 Bulk solids delivery assembly pipe inlet width constantly narrows |
| 07/31/1997 | WO1997027430A1 Continuous high pressure solids pump system |
| 07/31/1997 | WO1997027337A1 Method for operating shaft furnace |
| 07/30/1997 | EP0786532A2 Briquette containing silicious residual matter, useful as additive for metallurgical purposes and process for the manufacture thereof |
| 07/23/1997 | CN1035483C Process for smelting blast-furnace slag containing titanium oxide |
| 07/16/1997 | EP0783589A1 Transportability improver for pulverized coal |
| 07/08/1997 | US5645381 Variable-split blowdown coal feed system |
| 07/03/1997 | WO1997023654A1 A method for the pneumatic delivery of plastics-containing materials into a reaction vessel |
| 06/26/1997 | DE19648306A1 Treatment of shredded scrap light constituents in a melt |
| 06/24/1997 | CA2058520C Hot dust recycling process and apparatus |
| 06/17/1997 | US5639353 Apparatus for carbonizing material |
| 06/11/1997 | EP0777751A1 Method and apparatus for electric steelmaking |
| 06/11/1997 | CN1151439A Method of blowing-in furnace for smelting whole sefstromite using sefstromite blast furnace |
| 05/15/1997 | WO1997017473A1 Duplex procedure for the production of metals and metal alloys from oxidic metal ores |
| 05/07/1997 | DE19538622C1 Dosing and conveying device for powdery pourable solids |
| 04/30/1997 | DE19539634A1 Device for feeding finely divided material into melting area of coke-fired shaft furnace |
| 04/24/1997 | WO1997014817A1 Process for conveying a finely divided solid |
| 04/24/1997 | DE19539216A1 Utilisation of (hydro)carbon-containing wastes for reducing metals in waste |
| 04/16/1997 | EP0768386A1 Method for lowering the melting point of the residual ash of coal |
| 04/10/1997 | WO1997012997A1 Scrap melting method |
| 04/09/1997 | EP0767349A2 The use of nitrogen from an air separation plant in carbon dioxide removal from a feed gas to a further process |
| 03/25/1997 | US5613997 Converting carbonaceous material to reducing gas |
| 03/04/1997 | US5607556 Method for coking coal |
| 02/12/1997 | CN1142845A Utilizing discarded carbon |
| 02/05/1997 | CN1142249A Apparatus for melting fine particles containing carbon and method thereof |
| 02/05/1997 | CN1141954A Raw-material and chamotte mixed blast-furnace iron-making method |
| 02/04/1997 | US5599375 Electric arc furnace equipped with auxiliary heat source |
| 02/04/1997 | US5599361 Stable compressed solid fuel pellets or briquets containing coal and/or coke fines with polymeric binder |