| Patents for C21B 5 - Making pig-iron in the blast furnace (3,135) |
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| 06/20/2000 | US6077325 Adding a metal sulfate to coal supplied to blast furnace as supplementary fuel to lessen the amount of coke supplied |
| 06/15/2000 | DE19857306A1 Solid particle injection, especially into a blast furnace tuyere, comprises high pressure gas introduction into a carrier gas to induce high speed particle spiral motion towards a lance outlet |
| 06/07/2000 | EP0748392B1 Method for melting fine particles containing carbon |
| 06/07/2000 | CN1255967A Combined installation of furance and air distrillation appts. and use method |
| 06/02/2000 | WO2000012599A9 Method of treating resin or organic compound, or waste plastics containing them |
| 06/02/2000 | WO2000005421A8 Blast furnace with narrowed top section and method of using |
| 05/24/2000 | EP1002881A4 Ferrite- and calcium-based flux, mixture for its production, and use thereof |
| 05/24/2000 | EP1002881A1 Ferrite- and calcium-based flux, mixture for its production, and use thereof |
| 05/24/2000 | EP1002854A2 Combustion process for producing pig iron or cement |
| 05/24/2000 | CN1052758C Blast furnace operating consulting system |
| 05/23/2000 | CA2183784C Apparatus for melting fine particles containing carbon and method for melting such fine particles using the apparatus |
| 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 | EP0689614B1 Process for operating a cupola furnace while using briquettes as a slag-forming material |
| 04/25/2000 | US6053962 Scrap melting process |
| 04/20/2000 | WO2000022174A1 The method of substitute fuels feed to the blast furnace |
| 04/20/2000 | WO2000005421A9 Blast furnace with narrowed top section and method of using |
| 04/19/2000 | CN1250812A Method for operating vertical blast furnace for making pig-iron |
| 04/12/2000 | EP0992754A2 Operating process for a shaft furnace |
| 04/12/2000 | EP0992753A2 Operating process for a shaft furnace and shaft furnace |
| 04/04/2000 | US6045602 Method for integrating a blast furnace and a direct reduction reactor using cryogenic rectification |
| 03/28/2000 | CA2009766C Method for the pneumatic injection of metered quantities of powdered substances into a chamber at a variable pressure |
| 03/16/2000 | WO2000014287A1 Method for the production of a bulk of molten metal, a metallurgical product, and use of such a product |
| 03/09/2000 | WO2000012599A1 Method of treating resin or organic compound, or waste plastics containing them |
| 02/29/2000 | US6030430 Blast furnace with narrowed top section and method of using |
| 02/24/2000 | WO2000009763A1 Pulverized coal injecting apparatus |
| 02/22/2000 | US6026657 Supplying compressed air |
| 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 |
| 02/09/2000 | CN1243882A Low-basicity less-slag iron smelting technology for blast furnace with external desulfurizing greatly of molten iron |
| 02/03/2000 | WO2000005421A1 Blast furnace with narrowed top section and method of using |
| 02/02/2000 | EP0976839A1 Method for producing metal from metal ores |
| 02/02/2000 | CN1049010C Method of blowing-in furnace for smelting whole-sefstromite using sefstromite blast furnace |
| 01/26/2000 | EP0974816A1 Method and device for measuring a flow of granular solid materials |
| 01/25/2000 | CA2126188C Method for continuously melting down scrap metal |
| 01/12/2000 | EP0970336A1 Combined installation of a furnace and an air distillation apparatus and use method |
| 01/05/2000 | EP0969107A1 Process for producing molten pig iron or molten steel pre-products and hot briquetted iron |
| 01/05/2000 | EP0969105A1 Rotary hearth furnace for reducing oxides, and method of operating the furnace |
| 12/25/1999 | CA2274631A1 Apparatus and procedure for measuring the flow of divided solid matter, and their utilization in a blast furnace |
| 12/16/1999 | WO1999064636A1 Coal combustion enhancer and method of using in blast furnace |
| 12/16/1999 | CA2332598A1 Coal combustion enhancer and method of using in blast furnace |
| 12/15/1999 | CN1047336C Method and device for preparation of semi-product in metallurgical conversion |
| 12/07/1999 | US5997596 Oxygen-fuel boost reformer process and apparatus |
| 11/30/1999 | US5993508 Briquette as an additive for metallurgic purposes comprising silicon-containing residues, and process for its production |
| 11/30/1999 | US5992335 Method of blowing synthetic resin into furnace and apparatus therefor |
| 11/24/1999 | EP0856068B1 Process for conveying a finely divided solid |
| 11/17/1999 | CN1235644A Process for returning finely dispersed solids discharged with carrier gas from reactor vessel |
| 11/03/1999 | EP0953057A1 Process for returning finely dispersed solids discharged with a carrier gas from a reactor vessel |
| 10/27/1999 | EP0951570A1 Process for monitoring the operation of a device for feeding an abrasive medium by means of a fluid |
| 10/20/1999 | EP0891431B1 Desulphurising calcium carbide blend |
| 10/14/1999 | DE19812087C1 Blast furnace pig iron production process with minimal coke consumption |
| 10/06/1999 | EP0946848A2 Operating method and device for a shaft furnace |
| 10/06/1999 | CN1230999A Process for monitoring operation of device for feeding abrasive medium by means of fluid |
| 10/06/1999 | CN1045474C Process and apparatus for producing molten pig iron or molten steel preproducts, and sponge-iron hot pressing dough |
| 09/21/1999 | US5954855 Method for electric steelmaking |
| 08/31/1999 | US5946340 Concurrent injection of coke and raw materials |
| 08/05/1999 | WO1999039012A1 Gas regulation system for blast furnace |
| 07/29/1999 | WO1999037963A1 Combined installation of a furnace and an air distillation apparatus and use method |
| 07/28/1999 | EP0932006A1 Combined oven and air separation plant and method of application |
| 07/28/1999 | EP0932005A1 Combined oven and air separation plant and method of application |
| 07/28/1999 | EP0931840A1 Process and installation for iron ore reduction in blast furnaces |
| 07/23/1999 | CA2259857A1 Combined plant of a furnace and an air distillation device, and implementation process |
| 07/23/1999 | CA2259797A1 Combined plant of a furnace and air distillation device, and implementation process |
| 07/22/1999 | DE19800418A1 Verfahren zur Erzeugung von Roheisen A process for the production of pig iron |
| 07/15/1999 | WO1999035294A1 Method for producing pig iron |
| 07/15/1999 | CA2317509A1 Method for producing pig iron |
| 07/14/1999 | CN1044134C Blast furnace gas temp. regulation system |
| 07/13/1999 | US5922261 Process for recovering iron from iron-rich material |
| 07/07/1999 | EP0927770A1 High carbon content iron-base briquettes and process for preparing same |
| 06/23/1999 | EP0876572A4 Continuous high pressure solids pump system |
| 06/16/1999 | EP0922773A1 Method and device for pneumatic conveyance and blowing of bulk material in a metallurgical melting furnace |
| 06/16/1999 | EP0922772A1 Hot oxygen blast furnace injection system |
| 06/16/1999 | CN1219595A Hot oxygen blast furnace injection system |
| 06/02/1999 | EP0862657A4 Duplex procedure for the production of metals and metal alloys from oxidic metal ores |
| 05/18/1999 | US5904895 Apparatus for electric steelmaking |
| 05/14/1999 | WO1999023262A1 Method of operating blast furnace |
| 05/12/1999 | EP0915175A1 Pulverized coal carriability improver |
| 05/12/1999 | EP0914296A1 Process and device for returning scrap into cupola furnace |
| 05/11/1999 | US5902372 Process and apparatus for processing a shredder light fraction in a melt |
| 05/05/1999 | CN1215625A Pressure swing adsorption process for extracting carbon monooxide as fuel from blast furnace waste gas |
| 04/29/1999 | WO1999020800A1 Method and device for injecting reducing agents in a shaft furnace |
| 04/08/1999 | WO1999016913A1 Rotary hearth furnace for reducing oxides, and method of operating the furnace |
| 03/31/1999 | EP0738780B1 Method of operating blast furnace |
| 03/31/1999 | CN1212289A Process and plant for supplying blast furnace |
| 03/11/1999 | WO1999011571A1 Oxygen-fuel boost reformer process and apparatus |
| 03/02/1999 | CA2096805C A direct-reduction process for directly reducing particulate iron-oxide-containing material |
| 02/24/1999 | CN1042238C Combustion adjuvant method of blowing coal powder into blast furnace |
| 02/17/1999 | CN1042144C Process for melting metal or non metal and material consisting of at least on hydrocarbyl polymer therefor |
| 02/17/1999 | CN1042141C Metallurgical processes and apparatus |
| 02/03/1999 | EP0894846A2 Finely divided fuel and method of making the same |
| 01/20/1999 | EP0891431A1 Desulphurising calcium carbide blend |
| 01/20/1999 | CN1205743A Duplex procedure for prodn. of metals and metal alloys from oxidic metal ores |
| 01/13/1999 | CN1204548A Solid electrolyte systems for use with furnaces |
| 01/12/1999 | US5858302 Apparatus for electric steelmaking |
| 01/07/1999 | EP0888805A2 Process for oxygen-enriching using a solid electrolyte system |
| 01/07/1999 | DE19729624A1 Furnace for thermal treatment of raw material e.g. iron |
| 01/06/1999 | CN1204371A Process for conveying finely divided solid |
| 01/05/1999 | US5855648 Solid electrolyte system for use with furnaces |
| 12/30/1998 | EP0791039A4 Method for coking coal |
| 12/30/1998 | CN1041437C Smelting method of blast furnace low-titanium slag |
| 12/01/1998 | US5843368 Apparatus for electric steelmaking |