| Patents for C21B 11 - Making pig-iron other than in blast furnaces (2,381) |
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| 01/31/2001 | CN2417177Y Fused state reduction furnace |
| 01/31/2001 | CN1061380C Method and apparatus for producing synthetic blast-furnace slag and pig-iron alloys |
| 01/24/2001 | CN1061099C Method for operating shaft furnace |
| 01/17/2001 | CN1280628A Method for reducing iron oxides and smelting iron and installations thereof |
| 01/17/2001 | CN1280199A Start method for directly smelting technology |
| 01/17/2001 | CN1060813C Device of three-stage fluidized bed furnace type for reducing fine iron ore |
| 01/17/2001 | CN1060812C Method for injecting fine iron ore in smelting reducing process |
| 01/16/2001 | US6174346 Duplex procedure for the production of metals and metal alloys from oxidic metal ores |
| 01/10/2001 | EP1067201A2 Start-up procedure for direct smelting process |
| 01/03/2001 | CN1278869A Direct smelting process for producing metals from metal oxides |
| 12/28/2000 | WO2000079012A1 Method for producing melt iron |
| 12/27/2000 | CN1278011A Direct smelting furnace |
| 12/27/2000 | CN1278010A Direct smelting method and equipment |
| 12/21/2000 | WO2000077467A1 Through-hole sealing device |
| 12/21/2000 | CA2374750A1 Through-hole sealing device |
| 12/20/2000 | CN1059706C Gas circulating reduction smelting process for carbon containing pellets |
| 12/13/2000 | EP1059501A2 Direct smelting vessel |
| 12/13/2000 | CN1276862A Structure of metallurgical furnace and operating method using same metallurgical furnace |
| 12/06/2000 | CN1059240C Duplex procedure for prodn. of metals and metal alloys from oxidic metal ores |
| 11/29/2000 | EP1055006A1 Fluidized bed type fine iron ore reducing apparatus, and method therefor |
| 11/22/2000 | EP0815272B1 Method of producing pig iron, alloys of ferrous metal and/or nonferrous metal with synthetic blast furnace slag from residues of incinerated waste and steelworks slag |
| 11/14/2000 | US6146437 Metal containing compound reduction and melting process |
| 11/07/2000 | US6143054 Molten bath-based direct smelting process for producing metals from metal oxides(including partially reduced metal oxides), process includes causing upward movement of splashes, droplets, streams of molten material from metal layer of bath |
| 10/10/2000 | US6129776 Controlling gas utilization ratio inside the furnace by adjusting the charge height of the charge and the height of the coke bed; efficiently reducing and melting the iron ore at a low fuel ratio |
| 10/04/2000 | EP0809713B1 Process for producing liquid raw iron or liquid steel base products and sponge iron and plant for implementing it |
| 09/26/2000 | CA2181409C Method and apparatus for producing pig iron by smelting reduction and method of obtaining such a plant |
| 09/20/2000 | CN1056652C Circulating fludized bed furnace for prereduction of fine iron ore |
| 09/13/2000 | EP1034313A1 Device and process system for preheating steel scrap |
| 09/13/2000 | EP1034312A1 Method for reducing iron oxides and smelting iron and installations therefor |
| 09/13/2000 | EP1034311A1 Direct smelting process for producing metals from metal oxides |
| 08/23/2000 | CN1055730C Reduced ion mfg. method and apparatus |
| 08/09/2000 | CN1262331A Electrothermal technology for smelting and conticasting |
| 08/02/2000 | CN1055126C Iron containing scrap melting method |
| 07/26/2000 | EP1022348A1 Method for manufacturing reduced iron pellets including controlled water cooling of the same |
| 07/26/2000 | EP0958385A4 Method of agglomerating oil-containing steel mill waste |
| 07/19/2000 | EP1020535A1 Method for manufacturing reduced iron agglomerates and rotary hearth apparatus therefor |
| 07/19/2000 | EP1017858A4 Mixed bed iron reduction process |
| 07/12/2000 | EP1017860A1 Refractory wall, metallurgical vessel comprising such a refractory wall and method in which such a refractory wall is applied |
| 07/12/2000 | EP1017858A1 Mixed bed iron reduction process |
| 07/11/2000 | US6086653 Smelting-reduction apparatus and method for producing molten pig iron using the smelting reduction apparatus |
| 07/05/2000 | CN1259172A Method for controlling a smelting reduction process |
| 07/04/2000 | US6083296 Method of producing metals and metal alloys |
| 06/21/2000 | EP0914474B1 Metal reduction and melting process |
| 06/15/2000 | WO2000034531A1 Fluidized bed type fine iron ore reducing apparatus, and method therefor |
| 06/15/2000 | CA2320242A1 Fluidized bed type fine iron ore reducing apparatus, and method therefor |
| 06/14/2000 | CN1053474C Process for direct reduction of iron oxide-containing materials with solid carbonaceous reducing agents |
| 06/14/2000 | CN1053473C Method and apparatus for producing metal and metal alloy |
| 06/07/2000 | EP0748392B1 Method for melting fine particles containing carbon |
| 06/07/2000 | CN1053222C Smelting reduction method with increased effectiveness |
| 05/30/2000 | CA2184009C Fluidized bed type reduction apparatus for iron ore particles and method for reducing iron ore particles using the apparatus |
| 05/24/2000 | EP0796350B1 Method of producing molten crude iron or molten crude steel, and plant for carrying out the method |
| 05/23/2000 | CA2184008C Fluidized bed type reduction apparatus for iron ores and method for reducing iron ores using the apparatus |
| 05/23/2000 | CA2183784C Apparatus for melting fine particles containing carbon and method for melting such fine particles using the apparatus |
| 05/16/2000 | US6063156 From a compact containing a carbonaceous reductant and an iron oxide is carried out extremely efficiently with a simple operation. |
| 05/10/2000 | CN1252454A Method for using low temperature rectification combinea blast furnace and direct reduction reactor |
| 05/03/2000 | EP0997693A2 Method for integrating a blast furnace and a direct reduction reactor using cryogenic rectification |
| 05/03/2000 | EP0996749A1 Method for controlling a smelting reduction process |
| 05/03/2000 | EP0689614B1 Process for operating a cupola furnace while using briquettes as a slag-forming material |
| 05/02/2000 | CA2169020C Method for producing molten pig iron |
| 05/02/2000 | CA2138718C Converter process for the production of iron |
| 04/26/2000 | CN1251618A Electric furnace with insulated electrode and process for producing molten metals |
| 04/25/2000 | US6053962 Scrap melting process |
| 04/20/2000 | WO2000022176A1 A process and an apparatus for producing metals and metal alloys |
| 04/12/2000 | EP0992754A2 Operating process for a shaft furnace |
| 04/12/2000 | EP0992753A2 Operating process for a shaft furnace and shaft furnace |
| 04/12/2000 | EP0992596A2 Operating process for a shaft furnace and shaft furnace |
| 04/12/2000 | EP0741801B1 Fluidized bed type reduction apparatus for iron ores and method for reducing iron ores using the apparatus |
| 04/05/2000 | EP0990053A1 Process and plant for producing iron smelt in an electric arc furnace by using agglomerated, iron-containing steel work residues |
| 04/04/2000 | US6045602 Method for integrating a blast furnace and a direct reduction reactor using cryogenic rectification |
| 03/29/2000 | CN1248634A Final reduction apparatus and method for fused reduction iron-smelting |
| 03/29/2000 | CN1248633A Pre-reduction method and apparatus for fused reduction |
| 03/29/2000 | CN1248632A Coal oxygen fused reduction iron-smelting method and apparatus |
| 03/22/2000 | EP0963449A4 Electric furnace with insulated electrodes and process for producing molten metals |
| 03/22/2000 | CN1050634C Production of foundry iron |
| 03/22/2000 | CN1050633C Method and plant for producing pig iron by smelting reduction and method for obtaining such plant |
| 03/16/2000 | WO2000014286A1 Method for heat-treating recyclings containing oil and iron oxide |
| 03/16/2000 | WO2000014285A1 A direct smelting process |
| 03/16/2000 | CA2339014A1 Method for heat-treating recyclings containing oil and iron oxide |
| 03/09/2000 | WO2000012767A1 Method for producing a metal melt and corresponding multfunction lance |
| 03/09/2000 | WO2000012766A1 A process and an apparatus for producing metals and metal alloys |
| 03/01/2000 | EP0982407A1 Process for melting inorganic substances |
| 03/01/2000 | CN1246160A Refractory wall, metallurgical vessel comprising such refractory wall and method in which such refractory wall is applied |
| 02/24/2000 | WO2000009764A1 Method for producing liquid pig iron |
| 02/24/2000 | CA2338074A1 Method for producing liquid pig iron |
| 02/10/2000 | WO2000006783A1 A direct smelting process |
| 02/10/2000 | DE19835271A1 Operation of a shaft furnace for production of cast iron and metal alloys involves pulsed delivery of oxygen-containing gas and materials containing coal dust |
| 01/25/2000 | CA2126188C Method for continuously melting down scrap metal |
| 01/19/2000 | CN1242056A Production method of metallic iron |
| 01/13/2000 | WO2000001855A1 A direct smelting process |
| 01/13/2000 | WO2000001854A1 Direct smelting vessel and direct smelting process |
| 01/12/2000 | EP0757666B1 Metallurgical furnace vacuum slag removal |
| 01/11/2000 | CA2131666C Method for producing iron-containing material having less clustering during direct reduction and products thereof |
| 01/05/2000 | EP0969107A1 Process for producing molten pig iron or molten steel pre-products and hot briquetted iron |
| 01/04/2000 | US6010553 Process for producing pig iron, nonferrous heavy metal alloys, FECR and synthetic blast furnace slags using metal-oxide-containing waste incineration residues or slags |
| 12/15/1999 | EP0963449A1 Electric furnace with insulated electrodes and process for producing molten metals |
| 12/15/1999 | CN1047336C Method and device for preparation of semi-product in metallurgical conversion |
| 12/09/1999 | WO1999063119A1 Sustainable steelmaking by intensified direct reduction of iron oxide and solid waste minimisation |
| 12/07/1999 | US5997608 Process for the production of molten pig iron or molten steel, pre-products and sponge iron and a plant for carrying out the process |
| 12/01/1999 | CN1046962C Process for producing liquid raw iron or steel basic products and iron sponge and plant implementing |
| 12/01/1999 | CN1046961C Process for producing liquid raw iron or steel basic priducts and iron sponge and plant for implementing |