| Patents for C21B 11 - Making pig-iron other than in blast furnaces (2,381) |
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| 12/20/1988 | US4792352 Method for manufacturing steel through smelting reduction |
| 12/13/1988 | US4790516 Vessel allows carbonaceous fuel and scrap iron to be charged directly into molten iron |
| 11/17/1988 | EP0290650A1 Method for manufacturing steel through smelting reduction |
| 11/15/1988 | US4784689 Reduction of iron ore |
| 11/15/1988 | CA1244656A1 Processes and appparatus for the smelting reduction of smeltable materials |
| 10/25/1988 | US4780137 A process for producing a mixed gas |
| 08/25/1988 | WO1988006190A1 Method and furnace for making iron-carbon intermediate products for steel production |
| 08/17/1988 | EP0277947A1 Apparatus for producing ferrous or non-ferrous metals from self-fluxing or not, self-reducing agglomerates or ores. |
| 08/10/1988 | CN87107197A Process and apparatus for recovering metal and metal alloy |
| 08/04/1988 | DE3701571A1 Digestion of raw phosphates even in a fusion gasifier, with addition of scrap and steelworks slag |
| 07/06/1988 | CN86101817B Process for producing liquid iron and half-finished steel products using granular material containing iron |
| 07/05/1988 | US4755219 Process for producing molten pig iron or steel raw material |
| 06/09/1988 | DE3640472A1 Process for producing crude iron by smelting of calcined pyrite and/or metallurgical dust |
| 05/18/1988 | CN87107202A Recovering method and equipment for metal and alloy |
| 05/05/1988 | DE3735966A1 Process for winning metals or metal alloys and also plant for carrying out the process |
| 05/05/1988 | DE3735965A1 Process for winning metals or metal alloys and also plant for carrying out the process |
| 04/27/1988 | CN86107778A Equipment for the production of ferrous or nonferrous metals from self-reduced lumps or ores with self-melting or non-self-melting process |
| 04/26/1988 | US4740242 Method for transferring heat to molten metal, and apparatus therefor |
| 04/21/1988 | WO1988002838A1 Apparatus for producing ferrous or non-ferrous metals from self-fluxing or not, self-reducing agglomerates or ores |
| 04/13/1988 | EP0263119A1 Process and device for melt gasification |
| 03/02/1988 | CN87203742U Self-feeding furnace producting high-titanium slag |
| 03/01/1988 | US4728360 Fluidized bed of coke particles |
| 02/25/1988 | DE3627037A1 Process and plant meant for producing crude iron |
| 02/16/1988 | US4725308 Process for producing molten pig iron or steel pre-products |
| 11/24/1987 | US4708736 Method of producing molten pig iron or steel pre-products from particulate ferrous material |
| 10/20/1987 | US4701214 Prereducing agglomerated ore and carbonaceous reducing agent |
| 10/20/1987 | CA1228234A1 Process and an arrangement for producing molten pig iron or steel pre-products |
| 09/24/1987 | WO1987005634A1 Process and device for melt gasification |
| 09/23/1987 | EP0237811A2 Method of reducing iron oxides in two steps |
| 09/16/1987 | EP0236802A2 Iron ore melt reduction process |
| 09/16/1987 | EP0236801A2 Method for producing iron |
| 09/16/1987 | EP0236669A1 Method for producing molten pig iron or steel pre-material |
| 09/16/1987 | CN87102252A Fusion reduction of iron ore |
| 09/16/1987 | CN87101937A Method of manufacturing iron |
| 09/01/1987 | US4690387 Metallurgical plant for producing a mixed gas |
| 08/26/1987 | EP0233404A1 Method and plant for continuous production of steel from ore |
| 07/21/1987 | CA1224336A1 Process of producing liquid carbon-containing iron |
| 07/15/1987 | CN86104943A Process for reduction smelting iron ore |
| 07/08/1987 | EP0228039A2 Method and apparatus for transferring heat to molten metal |
| 07/02/1987 | DE3608150C1 Verfahren und Vorrichtung zur reduzierenden Schmelzvergasung Method and apparatus for reducing gassing |
| 07/01/1987 | CN86208000U Multifunctional scrap puddling-furnace |
| 06/16/1987 | US4673432 Process for the production of pig iron |
| 05/13/1987 | CN86105093A Method for producing raw iron from iron concentrates and for the manufacture of gas, and plant apparatus for carrying out the method |
| 05/12/1987 | US4664701 Method and plant for fully continuous production of steel strip from ore |
| 01/31/1987 | CN85101709A Method and plant for reducing oxidic material while simultaneously generating a gas suitable as fuel gas |
| 01/29/1987 | WO1987000554A1 A method for producing raw iron from iron concentrates and for the manufacture of gas, and plant apparatus for carrying out the method |
| 01/28/1987 | EP0210151A1 A method for producing raw iron from iron concentrates and for the manufacture of gas, and plant apparatus for carrying out the method |
| 01/27/1987 | CA1217059A1 Production of liquid iron |
| 01/21/1987 | EP0209149A1 Method for melt-reducing iron ore |
| 11/25/1986 | CA1214333A1 Method and a melt-down gasifier for producing molten pig iron or steel pre-products |
| 11/19/1986 | CN86101735A Metallurgical composites and processes |
| 11/05/1986 | CN86101817A Method of producing molten pig iron or steel pre-products from particulate ferrous material |
| 10/14/1986 | US4617671 Arrangement for producing metals, such as molten pig iron, steel pre-material and ferroalloys |
| 10/08/1986 | CN85101039A Method and plant for reducing oxidic material while simultaneously generating a gas suitable for the recovery of thermal energy |
| 09/25/1986 | WO1986005520A1 Improvements in or relating to ironmaking by means of a smelting shaft furnace |
| 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 |
| 09/09/1986 | US4611332 Transferred electric arc |
| 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 |
| 08/12/1986 | US4605437 Charging scrap iron and solid cabonaceous material, oxidation, melts using heat generated by oxidation reaction |
| 07/30/1986 | EP0189368A2 Process for making pig iron |
| 07/30/1986 | CN86100138A Process for the production of pig iron |
| 07/16/1986 | CN85100843A Process of melt-reduction for producing pig iron using coal-containing spheric agglomerates in shaft furnace |
| 07/02/1986 | EP0186653A1 Process for the production of a mixed gas and plant for carrying out the process |
| 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 |
| 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 |
| 05/13/1986 | US4588437 Fluidized beds, coke, iron sponge, prereduced iron ore |
| 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 | EP0179734A2 Process and apparatus for making sponge iron, especially pig iron |
| 04/23/1986 | EP0179014A2 Process for making pig iron |
| 02/19/1986 | EP0171658A1 Device for the bottom-tapping of a melting bath from a melting furnace or a teeming ladle |
| 01/07/1986 | CA1198899A1 Method of, and arrangement for, reducing oxide- containing fine-particle ores |
| 12/03/1985 | US4556418 Process for melting a ferrous burden |
| 11/05/1985 | US4551172 Process of producing liquid carbon-containing iron |
| 08/06/1985 | US4533385 Method for producing metals, such as molten pig iron, steel pre-material and ferroalloys |
| 05/29/1985 | EP0143102A1 Method and apparatus for the production of liquid pig iron or steel |
| 05/21/1985 | US4518417 Method of, and arrangement for, reducing oxide-containing fine-particle ores |
| 05/02/1985 | EP0139310A1 Process for obtaining molten carbon-containing iron from spongy iron |
| 04/16/1985 | US4511372 Carbon gasification method |
| 04/16/1985 | CA1185432A1 System for coal blowing in iron oxide reducing kilns |
| 03/27/1985 | EP0134852A1 Production of liquid iron |
| 03/12/1985 | US4504311 Process and apparatus for a direct formation of molten iron |
| 01/29/1985 | US4496369 Controlled pressurized system for producing synthesis gas and crude iron |
| 01/22/1985 | CA1181238A1 Method of gas production |
| 10/17/1984 | EP0122239A2 Process of producing pig iron from iron ore concentrate |
| 09/25/1984 | CA1175086A1 Transferred electric arc |
| 09/13/1984 | WO1984003521A1 Process of producing pig iron from iron ore concentrate |
| 09/04/1984 | US4469510 From iron oxide and carbon, blasting top of melt with oxygen |
| 08/15/1984 | EP0115756A1 A method and arrangement for producing metals, in particular molten pig iron, steel pre-material or ferroalloys |
| 07/25/1984 | EP0114040A1 Method and melt-down gasifier for producing molten pig iron or crude steel products |
| 02/14/1984 | CA1162053A1 Process and apparatus for continuously reducing and melting of metal oxides and/or pre-reduced metallic materials |
| 01/10/1984 | US4425659 Metal oxide reduction furnace |
| 01/10/1984 | CA1160056A1 Method of, and arrangement for, producing molten pig iron or steel pre-material |
| 12/13/1983 | CA1158443A1 Method and apparatus for producing molten iron |
| 11/22/1983 | US4416689 Heating iron ores and carbon-containing materials with oxygen in an electric arc furnace |