| Patents for C21C 5 - Manufacture of carbon steel, e.g. plain mild steel, medium carbon steel, or cast-steel (14,381) |
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| 12/06/1994 | US5371759 D.C. furnace with a hearth electrode, hearth electrode and electrode block, as well as process for operating said furnace |
| 12/06/1994 | US5370309 Liquid cooled nozzle |
| 12/06/1994 | CA2028108C Melting aggregate with shaft for preheating charged materials |
| 12/06/1994 | CA1333336C Mill arrangement and a process of operating the same |
| 12/06/1994 | CA1333335C Mill arrangement and a process of operating the same |
| 12/03/1994 | CA2124776A1 Gas injector load smelting furnace |
| 11/30/1994 | EP0626549A1 Metallurgical smelting furnace such as a steelplant electric furnace and process using such a furnace |
| 11/30/1994 | EP0626547A1 Process and installation for the liquid steel production from carbon-rich ferruginous material |
| 11/30/1994 | EP0548117B1 Device for inserting and removing stopper bricks for metallurgical vessels |
| 11/30/1994 | CN1095761A Method and unit for utilizing and recovering mud produced by wet dust removal of converter |
| 11/29/1994 | US5368627 Treatment of oxide-containing dusts |
| 11/24/1994 | WO1994026938A1 Method for melting scrap iron in an electric furnace and equipment for applying this method |
| 11/24/1994 | WO1994026937A1 A method of controlling the temperature of the bath in a converter |
| 11/23/1994 | EP0625685A1 Electric arc furnace with alternative sources of energy and operating method for such electric furnace |
| 11/23/1994 | EP0424502B1 Gas injector |
| 11/22/1994 | US5366538 Process for the production of a metal melt |
| 11/22/1994 | US5366537 Interposing inert gas between carbonaceous material and oxygen |
| 11/22/1994 | US5366409 Controlling pouring stream and receiver environment |
| 11/19/1994 | WO1994026946A1 Method of and apparatus for manufacturing medium and low carbon ferromanganese |
| 11/19/1994 | CA2132337A1 Method and apparatus for manufacturing medium or low carbon ferromanganese |
| 11/18/1994 | CA2122877A1 Electric arc furnace with alternative sources of energy and operating method for such electric furnace |
| 11/17/1994 | EP0624769A1 Process and installation for closing the bottom taphole of a metallurgical vessel |
| 11/17/1994 | EP0624655A1 Process and installation for treating of molten metal, in particular molten steel with a refining agent |
| 11/15/1994 | US5365542 Anode for a direct current arc furnaces |
| 11/15/1994 | US5364079 Tiltable converter |
| 11/10/1994 | DE4314482A1 Process and apparatus for the treatment of metal smelts |
| 11/09/1994 | CN1026501C Directly alloying process in vanadium slag furnace |
| 11/02/1994 | EP0622974A1 Improved rectifier for powering a DC arc furnace |
| 11/02/1994 | EP0622595A1 Air separation process and installation therefore |
| 11/02/1994 | EP0622140A1 Casting device with controlled flow of materials smolten in a cold crucible furnace |
| 11/02/1994 | EP0621813A1 Suppression of fume in metal pouring |
| 11/02/1994 | CN1094505A Direct current arc furnace and method for its operation |
| 11/02/1994 | CN1026417C Bottum gas supply element for metallwrgical furnace and producing method |
| 10/30/1994 | CA2122291A1 Device for extraction by pouring with a regulatable flow rate of a material melted in a melter having cold walls |
| 10/30/1994 | CA2122199A1 Air separation method and apparatus |
| 10/27/1994 | WO1994024506A1 Apparatus for preheating and supplying scraps |
| 10/27/1994 | WO1994024504A1 Dc arc furnace |
| 10/27/1994 | WO1994024503A1 Dc arc furnace |
| 10/27/1994 | WO1994023867A1 Slide gate valve having a cementless joint between the valve and a metallurgical vessel |
| 10/27/1994 | WO1994023864A2 Slide gate valve having replaceable refractory valve plate assembly and method of replacing the same |
| 10/27/1994 | DE4335643C1 Method and apparatus for introducing gases into metal melts |
| 10/27/1994 | DE4312988A1 Refractory ceramic moulding and production process |
| 10/27/1994 | DE4312981A1 Flushing device for metallurgical vessels |
| 10/27/1994 | CA2137373A1 Slide gate valve having replaceable refractory valve plate assembly and method of replacing the same |
| 10/26/1994 | EP0621473A1 Device for taking a sample of molten metal, especially cast iron |
| 10/26/1994 | EP0621098A1 Method and apparatus for casting with a cement-free joint of a metallurgical vessel and a casting gate |
| 10/26/1994 | EP0621097A1 Set of ceramic elements for a casting gate and method of changing this set |
| 10/18/1994 | US5356456 Method of degassing and decarburizing stainless molten steel |
| 10/12/1994 | CN1026175C Method for controlling well-distributed compositions when making steel ingot |
| 10/11/1994 | CA2023881C Automatic gas hookup to a ladle |
| 10/05/1994 | EP0617740A1 Extraction of mercury and mercury compounds from contaminated material and solutions |
| 10/05/1994 | EP0617739A1 Method for continuously melting down scrap metal |
| 10/04/1994 | CA2003156C Method of operating a smelting unit and smelting unit for that method |
| 09/29/1994 | DE4309640A1 Direct-current arc furnace plant |
| 09/28/1994 | EP0446237B1 Furnace for melting down scrap iron |
| 09/27/1994 | US5350434 Process and apparatus for making molten steel |
| 09/27/1994 | US5350158 Metallurgical lance and method of cooling the lance |
| 09/21/1994 | CN2177925Y High-temp. pot-string type waste steel preheating device |
| 09/14/1994 | CN1092154A Incline unit of DC arc furnace and method for thorough discharging of molten steel from furnace |
| 09/13/1994 | US5346528 Continuous automatic steel making method and facility |
| 09/07/1994 | CN1091777A Method and apparatus for controlling of operation of double-furnace |
| 09/06/1994 | US5344122 Tubular rod and device for sampling and analyzing fumes and apparatus including such device |
| 09/01/1994 | WO1994019498A1 Method and apparatus for slag free casting |
| 09/01/1994 | DE4306207A1 A process for melting down plastic-contaminated scrap with fractional decomposition of the organic fractions in a shaft furnace |
| 08/30/1994 | US5343491 Method of suppressing dust and fumes during electric steel production |
| 08/24/1994 | EP0611939A1 Device for lifting and moving the roof of a spray cooled furnace |
| 08/23/1994 | US5340088 Metallurgical vessel and method of making the refractory lining of such vessels |
| 08/23/1994 | CA1331510C Stopper for retaining slag and process for implementation and manufacture thereof |
| 08/18/1994 | WO1994018348A1 Process for recycling dust collected during the production of steel in an electric arc furnace |
| 08/18/1994 | WO1994018347A1 A slag defoaming composite |
| 08/18/1994 | DE4240676C1 Construction crane for laying refractory bricks in converters |
| 08/18/1994 | CA2117758A1 Process for recycling the filter dust in an electric arc furnance for producing steel |
| 08/17/1994 | EP0610550A1 Sampler |
| 08/17/1994 | EP0560834B1 Bottom or wall structure for a metallurgical vessel |
| 08/17/1994 | CN2174773Y Steel-smelting energy-storing trip apparatus for electric-arc furnace |
| 08/16/1994 | US5338329 Process and device for obtaining mineral fibers |
| 08/10/1994 | EP0609562A1 Gas purging ceramic brick for steel treatment ladles |
| 08/10/1994 | EP0483322B1 Smelting plant with two adjacent smelting furnaces |
| 08/10/1994 | CN2173790Y High-strength oxygen lance for large converter |
| 08/09/1994 | US5336296 Method of obtaining steel in a liquid bath and the device to carry it out |
| 08/03/1994 | EP0608591A1 Process and installation for running a double furnace plant |
| 08/03/1994 | CN1025569C One-way oxygen top-blown Martin furnace |
| 08/02/1994 | US5333843 Device for installing and removing gas purging plugs for metallurgical vessels |
| 08/02/1994 | US5333842 Apparatus for supplying media to a blowing lance |
| 08/02/1994 | CA1331097C Process for melting metal scrap and apparatus for performing the process |
| 07/26/1994 | US5332201 System of sized bricks |
| 07/26/1994 | US5332199 Metallurgical vessel |
| 07/26/1994 | CA1330874C Nozzle for refining lance |
| 07/21/1994 | WO1994016122A1 Method for refining molten metals and recovering metals from slags |
| 07/21/1994 | DE4301324A1 Ceramic lance and method for its prodn. |
| 07/20/1994 | EP0474703B1 Manufacture of ferroalloys using a molten bath reactor |
| 07/19/1994 | US5330690 Process and apparatus for renewing the refractory lining of foundry ladles |
| 07/19/1994 | US5330161 Spray cooled hood system for handling hot gases from a metallurgical vessel utilizing pneumatic processing of molten metal |
| 07/19/1994 | US5330160 Gas stir plug wear indicator including low melting point component and method of use |
| 07/13/1994 | EP0605968A1 Burner apparatus for metal processing furnaces |
| 07/13/1994 | CN2171599Y Split-flow oxygen gun sprinkler head for covertering steel |
| 07/13/1994 | CN1025438C Process for top and bottom blowing smelting stainless steel in electric-arc furnace |
| 07/12/1994 | US5329545 Tuyere for installation in hearth of electric arc furnace |
| 07/12/1994 | US5329467 Distance measuring method and apparatus therefor |
| 07/12/1994 | US5328658 Decarburization molten steel with blowing gas, reducing chromium oxides and depressurization |