| Patents for C21B 5 - Making pig-iron in the blast furnace (3,135) |
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| 01/29/1997 | EP0755736A1 Improvements in metallurgical conversion |
| 01/23/1997 | WO1997002363A1 Method for improving conveyability of pulverized coal |
| 01/15/1997 | CN1140471A Process for melting metal or non metal and material consisting of at least one hydrocarbyl polymer therefor |
| 01/08/1997 | CN1139889A Improvments in metallurgical conversion |
| 12/31/1996 | US5589118 Forming into briquettes with binder |
| 12/18/1996 | EP0748392A1 Apparatus for melting fine particles containing carbon and method for melting such fine particles using the apparatus |
| 12/17/1996 | US5584910 Preheating iron ore and fluxes including fines, reducing to sponge iron, melting in presence of carbon carriers and oxygen-containing gas to produce reducing gas, passing first portion to reducing zone, purifying second portion |
| 12/12/1996 | WO1996039290A1 Process for recovering iron from iron-rich material |
| 12/12/1996 | CA2223044A1 Process for recovering iron from iron-rich material |
| 12/10/1996 | US5582029 Use of nitrogen from an air separation plant in carbon dioxide removal from a feed gas to a further process |
| 12/05/1996 | DE19532505C1 Disposal of waste halogen-contg. hydrocarbon waste material |
| 11/06/1996 | EP0740695A1 Utilizing discarded carbon |
| 11/06/1996 | EP0567513B1 Blast pipe and tuyere arrangement |
| 10/30/1996 | EP0739989A1 Process for melting metal or non metal materials |
| 10/23/1996 | EP0738780A1 Method of operating blast furnace |
| 10/23/1996 | CN1133889A Method of blowing charcaol powder into blast furnace |
| 10/02/1996 | CN1132253A Blast furnace comprhensive deterministic system |
| 09/17/1996 | US5556457 Recovery of steel plant revert materials through cementitious agglomeration |
| 09/10/1996 | US5554207 Process of recycling iron oxides and plastics in steelmaking |
| 08/29/1996 | DE19541673A1 Prodn. of solid reductants/energy carriers for blast furnaces |
| 08/28/1996 | EP0728220A1 Fines injection |
| 08/27/1996 | US5550312 Carbonizing waste in cylindrical rotary pyrolysis furnace, separating gas from residue, comminuting, classifying, feeding gas and fines to entrained flow gasification reactor producing hydrogen, carbon monoxide, slag, using gas to heat |
| 08/21/1996 | CN1129462A Method for the disposal/recycling of gas cylinders containing filling material |
| 08/13/1996 | US5544868 Blow pipe and gas lance for blast furance |
| 07/23/1996 | US5538534 Combined installation of a metal production unit and a unit for the separation of air gas |
| 07/16/1996 | US5535991 Plant for producing molten pig iron or molten steel pre-products |
| 07/11/1996 | WO1996021048A1 Apparatus for melting fine particles containing carbon and method for melting such fine particles using the apparatus |
| 07/11/1996 | DE19548143A1 Hot agglomeration of pre-reduced iron ore for ingot prodn. |
| 07/09/1996 | US5534046 Process for producing molten pig iron or molten steel pre-products |
| 06/05/1996 | EP0714451A1 Method for the disposal/recycling of gas cylinders containing filling material |
| 06/04/1996 | US5522916 Method and apparatus for injecting liquid oxygen |
| 05/30/1996 | WO1996016189A1 Process for melting metal or non metal materials |
| 05/30/1996 | CA2181804A1 Process for melting metal or non metal materials |
| 05/23/1996 | WO1996015277A1 Method of operating blast furnace |
| 05/23/1996 | WO1996015208A1 Method for coking coal |
| 05/15/1996 | DE4440504A1 Disposal of waste and smelting of metal scrap in a kiln with incandescent coke bed waste gas filter |
| 05/14/1996 | US5516356 Process and apparatus for feeding a second stream of pulverulent materials into a pneumatic conveying line carrying a first controllable flow of pulverulent materials |
| 04/10/1996 | CN1120072A Smelting method of blast furnace low-titanium slag |
| 04/04/1996 | WO1996010093A1 Transportability improver for pulverized coal |
| 03/28/1996 | DE4433596A1 Method of pneumatically conveying milled plastics material in reaction vessel |
| 03/26/1996 | US5501721 Fusion gasifier |
| 03/19/1996 | US5500032 Method for continuously melting down scrap metal |
| 03/07/1996 | WO1996006954A1 Method and apparatus for electric steelmaking |
| 03/06/1996 | CN1118173A Process for extracting metal from metal ores |
| 03/05/1996 | CA1338098C Method for operating blast furnace |
| 02/22/1996 | DE4437548C1 Additive contg. used titanium di:oxide catalyst |
| 02/14/1996 | CN1031000C Process for making iron in blast furnace by compound blow of oxygen, coal powder and flux at tuyere |
| 01/30/1996 | US5487764 Reclaiming and utilizing discarded and newly formed coke breeze, coal fines, and blast furnace revert materials, and related methods |
| 01/24/1996 | CN1115302A Method for extracting B from B slag |
| 01/23/1996 | CA1337958C Process and device for introducing additives into a furnace |
| 01/03/1996 | EP0689614A1 Briquette to be used as slag-forming material in smelting furnaces and process for producing it |
| 01/02/1996 | US5481247 Blast furnace tuyere sensor system |
| 12/21/1995 | WO1995034688A1 Method for operating a blast furnace |
| 12/20/1995 | CN1030531C Transport method for concentrate phase coal spray in blast furnace |
| 12/13/1995 | EP0686700A2 Titanium containing additive and its use for increasing the durability of a furnace refractory lining or as a slag former |
| 12/13/1995 | CN1113308A Cleaning method for pulverized coal injection system equipment using coke breeze |
| 11/29/1995 | CN1030398C Spray bituminous coal system for blast furnace |
| 11/22/1995 | CN1112163A Combustion adjuvant and adding method for sprayed coal powder of blast furnace |
| 10/25/1995 | CN1110718A Gas supply and control device for spraying oxygen in blast furnace |
| 10/11/1995 | EP0676346A1 Device for adjusting the pressure drop in a pneumatic transport pipe |
| 10/10/1995 | CA2011702C Method for smelting reduction of ni ore |
| 09/26/1995 | US5453103 Compression, clean burning fuel |
| 09/19/1995 | US5451034 Device for the injection of pulverized coal into a blast furnace crucible |
| 09/13/1995 | EP0671588A2 Cleaning methods for pulverized coal injection systems |
| 09/13/1995 | EP0670910A1 Process and device for producing pig iron from iron ore or for thermally and/or chemically treating an easily decomposable material |
| 09/08/1995 | WO1995023660A1 Improvements in metallurgical conversion |
| 09/08/1995 | CA2183262A1 Improvements in metallurgical conversion |
| 09/07/1995 | DE4407230A1 Method for material utilisation of solid waste in a coke-fired shaft furnace |
| 09/05/1995 | US5447571 Cleaning method for pulverized coal injection system equipment using coke breeze |
| 08/08/1995 | US5439504 Direct-reduction process for directly reducing particulate iron-oxide-containing material |
| 08/01/1995 | US5437706 Pretreatment with oxygen to control temperature |
| 07/27/1995 | WO1995020022A1 Utilizing discarded carbon |
| 07/27/1995 | DE4402025A1 Treating and utilising carbon-bearing residues contaminated with harmful substances |
| 07/27/1995 | CA2179885A1 Utilizing discarded carbon |
| 07/26/1995 | CN1105752A Combined installation of a metal production unit and a unit for the separation air gas |
| 07/06/1995 | WO1995017980A1 Residue and waste treatment process |
| 07/06/1995 | CA2157392A1 Residue and waste treatment process |
| 06/29/1995 | WO1995017527A1 Process for extracting metal from metal ores |
| 06/29/1995 | DE4419816C1 Titanium-contg. additive used in refractory linings and as a slagging agent |
| 06/27/1995 | US5427604 Alloy material addition method and apparatus for smelting and melting furnaces |
| 06/07/1995 | EP0656516A1 Alloy material addition method and apparatus for smelting and melting furnaces |
| 06/07/1995 | CN1103536A Method for obtaining metal from a blast furnace or cupola furnace |
| 05/30/1995 | US5419493 Agricultural chemical distributor |
| 05/17/1995 | EP0653599A1 Combined installation of a metal production unit and a separation unit of gases from air |
| 05/03/1995 | EP0651058A1 Process for introducing a second flow of powdered materials into a pneumatic transport system conveying powdered materials with adjustable flow rate |
| 04/20/1995 | DE4335398A1 Process and apparatus for charging a blast furnace with substitute fuels |
| 04/19/1995 | CN1101786A Process for producing pig iron and cement clinker |
| 04/19/1995 | CN1101677A Single Charging stock recipe for blast furnace iron-smelting and apparatus |
| 04/04/1995 | US5403378 Cooling injection lance having concentric tubes by injecting fine grained solid fuel through one tube while injecting coolant through another tube, for blast furnaces |
| 03/08/1995 | EP0641863A1 Blast furnace operation management method and apparatus |
| 03/07/1995 | US5395441 Including finishing mill scale, slag, blast furnace dust, binder consisting of a cement composition and bentonite; improved cold and hot strength |
| 03/02/1995 | WO1995006139A1 Method for the disposal/recycling of gas cylinders containing filling material |
| 03/01/1995 | CN1099417A Iron-smelting process |
| 02/23/1995 | DE4328164A1 Process for producing pig iron in a coke-fired shaft furnace |
| 02/22/1995 | EP0639231A1 Method for obtaining metal from a blast furnace or cupola furnace |
| 01/25/1995 | CN1097805A Oxygen coal powder flux tuyere composite blowing blast furnace iron-smelting technology |
| 01/25/1995 | CN1097804A Computerized blast furnace smelting expert system method |
| 01/12/1995 | DE4421673A1 Process for the preparation of pig iron or liquid steel precursors from starting materials containing iron ore |
| 01/11/1995 | EP0632841A1 Process for producing pig iron and cement clinker |
| 01/05/1995 | DE4328157A1 Process for the disposal of paint sludge from coating plants |