| Patents for C21B 13 - Making spongy iron or liquid steel, by direct processes (6,991) |
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| 11/19/1986 | CN86101735A Metallurgical composites and processes |
| 11/18/1986 | US4622905 Furnacing |
| 11/18/1986 | CA1214192A1 Plasma melting furnace with other added gas streams |
| 11/12/1986 | CA1213928A Method of carrying out metallurgical or chemical processes in a shaft furnace, and a low shaft furnace therefor |
| 11/05/1986 | EP0135526B1 Refractory lining for coal gasifiers |
| 11/05/1986 | CN86101817A Method of producing molten pig iron or steel pre-products from particulate ferrous material |
| 10/22/1986 | CN85103256A Method and means for mfg. a preformed metal product |
| 10/15/1986 | CN85103346A Process for direct reduction of briquets bound with high molecular substances |
| 10/14/1986 | US4617671 Arrangement for producing metals, such as molten pig iron, steel pre-material and ferroalloys |
| 10/14/1986 | US4617051 Recycling waste heat from raw reactor gas to the reactor |
| 10/14/1986 | CA1212541A1 Apparatus for discharging solids from a shaft furnace |
| 10/08/1986 | EP0196359A2 Method and apparatus for fluidized bed reduction of iron ore |
| 10/08/1986 | EP0183677A3 Process and apparatus for the direct reduction of iron ores and melting the reduced ores into a melter gasifier |
| 10/08/1986 | CN85101039A Method and plant for reducing oxidic material while simultaneously generating a gas suitable for the recovery of thermal energy |
| 10/07/1986 | US4615511 Continuous steelmaking and casting |
| 10/07/1986 | CA1212238A1 Continuous steelmaking and casting |
| 09/24/1986 | EP0195770A1 Process for the production of molten pig iron or steel pre-products |
| 09/24/1986 | CN86100484A Process and apparatus for producing sponge iron particles and molten pig iron |
| 09/23/1986 | US4613364 Method and means for manufacturing a preformed metal product |
| 09/16/1986 | USRE32247 Process for the direct production of steel |
| 09/03/1986 | EP0193488A1 Process and apparatus for producing sponge iron and liquid pig iron |
| 09/03/1986 | EP0192912A1 Process for the production of pig iron |
| 09/03/1986 | EP0192807A2 Process for manufacturing active briquettes rich in carbon |
| 08/19/1986 | US4606761 Such as iron ore with carbon monoxide and/or hydrogen |
| 08/12/1986 | US4605205 Arrangement comprising a gasifier and a direct reduction furnace |
| 08/12/1986 | CA1209343A1 Method and apparatus for the production of liquid iron from iron oxide |
| 08/05/1986 | US4604165 Apparatus for processing bulk materials by induction |
| 07/30/1986 | EP0189368A2 Process for making pig iron |
| 07/30/1986 | CN86100138A Process for the production of pig iron |
| 07/08/1986 | US4599068 Apparatus for preheating granular ore |
| 07/02/1986 | CA1206751A Process of afterburning combustible constituents of exhaust gases from rotary kilns |
| 07/01/1986 | US4597564 Rotary hearth |
| 06/17/1986 | CA1206087A1 Method of providing a coal-gas supply especially for iron or steel works |
| 06/11/1986 | EP0184405A2 Processes and apparatus for the smelting reduction of ores |
| 06/11/1986 | EP0043373B1 Process and device for continuous reduction and melting of metal oxides and/or prereduced metal materials |
| 06/10/1986 | CA1205636A1 Method of converting iron ore into molten iron |
| 06/04/1986 | EP0183677A2 Process and apparatus for the direct reduction of iron ores and melting the reduced ores into a melter gasifier |
| 06/04/1986 | CN85202680U High speed particles circulating fluidized bed and plasma smelting system |
| 05/28/1986 | EP0182775A2 Process for the production of molten pig iron or steel pre-products as well as arrangement for carrying out the process |
| 05/27/1986 | US4591381 Process of producing pig iron from iron ore concentrate |
| 05/27/1986 | US4591380 Method of generating a reducing gas |
| 05/27/1986 | CA1204943A1 Process of producing sponge iron by a direct reduction of iron oxide-containing material |
| 05/20/1986 | CA1204702A1 Dc furnace and a process for generation of reduction gas |
| 05/13/1986 | US4588437 Fluidized beds, coke, iron sponge, prereduced iron ore |
| 05/13/1986 | CA1204287A1 Method of generating a reducing gas |
| 05/10/1986 | CN85108811A Processes and apparatus for the smelting reduction of ores |
| 05/10/1986 | CN85108501A Process and apparatus for producing molten pig iron and semi-conduct of steel |
| 05/10/1986 | CN85108059A Process and apparatus for producing sponge iron or pig iron |
| 04/30/1986 | EP0179752A1 Process for the direct reduction of materials containing iron oxide |
| 04/30/1986 | EP0179734A2 Process and apparatus for making sponge iron, especially pig iron |
| 04/29/1986 | US4585476 Alternate reduction and cooling cycles of two batch reactors |
| 04/23/1986 | EP0179014A2 Process for making pig iron |
| 04/22/1986 | US4584016 Method for controlling metallization and carburization in the reduction of metal ores to sponge iron |
| 04/22/1986 | CA1203385A1 System for coal injection in iron oxide reducing kilns |
| 04/08/1986 | US4581061 Method for reducing oxidic iron ores in a rotary kiln |
| 04/02/1986 | EP0176497A1 Electric melting furnace |
| 04/01/1986 | US4579588 Controlling carbon monoxide-carbon dioxide ratio and heat output in melt vessel |
| 03/25/1986 | US4578110 Method of reducing iron oxides |
| 03/12/1986 | EP0174291A1 Process and installation for melting metals for non-ferrous oxidic and/or finely ground sulfidic ores or concentrates |
| 03/11/1986 | US4575394 Oxy-fuel burner using fuel having exothermic heat of decomposition |
| 02/12/1986 | EP0171097A1 Method of producing sponge iron |
| 02/11/1986 | CA1200392A1 Process of producing sponge iron by a direct reduction of iron oxide-containing material in a rotary kiln |
| 02/04/1986 | CA1200102A1 Process and apparatus for generating synthesis gas |
| 01/28/1986 | US4566904 Process for the production of iron |
| 01/28/1986 | US4566902 Process for removing sulfur during melting of pig iron |
| 01/21/1986 | CA1199498A1 Production and treatment of ferrochromium |
| 01/14/1986 | US4564389 Process for coal-gasification and making pig iron |
| 01/10/1986 | CN85101937A Using lignite to smelt iron |
| 01/07/1986 | CA1198899A1 Method of, and arrangement for, reducing oxide- containing fine-particle ores |
| 01/02/1986 | EP0166679A1 Arrangement for a gasifier and direct reduction furnace |
| 12/10/1985 | CA1197689A1 Process for making steel from direct-reduced iron |
| 12/03/1985 | US4556418 Process for melting a ferrous burden |
| 12/03/1985 | US4556417 Process for the direct reduction of iron ores |
| 11/27/1985 | EP0057706B1 Reduction of ferrotitaniferous materials |
| 11/19/1985 | US4553742 Iron oxidem molten iron bath, shaft furnace, acid gas removal, inj |
| 11/05/1985 | US4551172 Process of producing liquid carbon-containing iron |
| 10/29/1985 | CA1195844A1 Method for activating petroleum coke |
| 10/22/1985 | CA1195507A1 Production of steel |
| 10/16/1985 | EP0157917A2 Reduction of metal compounds |
| 10/15/1985 | US4547219 Method of reducing iron ore using petroleum coke |
| 10/08/1985 | CA1194702A1 Process for recovering iron and zinc from steel- making dusts |
| 09/24/1985 | US4543123 Process for the direct production of sponge iron particles and liquid crude iron from iron ore in lump form |
| 09/24/1985 | US4542889 Installation for the direct production of sponge iron particles and liquid crude iron from iron ore in lump form |
| 09/24/1985 | CA1193867A1 Process for coal-gasification and making pig iron and apparatus therefor |
| 09/17/1985 | CA1193440A1 Passivation of sponge iron |
| 09/10/1985 | US4540432 Continuous process of melting sponge iron |
| 08/27/1985 | US4537626 Method for the production of reaction gases |
| 08/20/1985 | US4536213 Reforming of higher hydrocarbons for metal oxide reduction |
| 08/06/1985 | US4533385 Method for producing metals, such as molten pig iron, steel pre-material and ferroalloys |
| 08/06/1985 | US4533384 Process for preparing binder-free hot-briquets |
| 07/31/1985 | EP0150164A2 Method for gasification of coal and/or coke |
| 07/30/1985 | US4531973 Metallurgical processes |
| 07/30/1985 | US4531718 Iron ores treatment apparatus |
| 07/09/1985 | US4528030 Method of reducing iron ore |
| 07/09/1985 | US4528029 Self-reducing iron oxide agglomerates |
| 07/02/1985 | CA1189705A1 Process and apparatus for directly making liquid pig- iron from coarse iron ore |
| 06/12/1985 | EP0143986A1 Process for desulfurizing a reducing gas |
| 06/11/1985 | US4522650 Add carbonaceous material to molten metal bath, add alloying elements |
| 05/29/1985 | EP0143102A1 Method and apparatus for the production of liquid pig iron or steel |
| 05/21/1985 | US4518419 Method of carrying out metallurgical or chemical processes in a shaft furnace, and a low shaft furnace therefor |