| 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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| 08/21/1997 | DE19642172C1 Refractory blow lance production |
| 08/20/1997 | EP0790089A1 Ceramic gas flushing element for a metallurgical vessel |
| 08/20/1997 | EP0680519B1 High-production rotary furnace steelmaking |
| 08/14/1997 | WO1997029617A1 Electrode and cooling element for a metallurgical vessel |
| 08/14/1997 | WO1997028915A1 Gas-flushing base for metallurgical vessels |
| 08/14/1997 | WO1997022975A3 Process for using contaminated metal parts |
| 08/14/1997 | DE19608532A1 Cooling the electrodes in an arc furnace during steel production |
| 08/14/1997 | DE19608531A1 Refining steel to reduce carbon content |
| 08/14/1997 | DE19608530A1 Treating steel in the course of its production in a metallurgical furnace |
| 08/13/1997 | CN1035629C Method for blowing oxidizing gases into molten metal |
| 08/07/1997 | WO1997028285A2 Producing stainless steels in parallel operated vessels |
| 08/07/1997 | DE19621143A1 Verfahren zur Erzeugung nichtrostender Stähle A method for producing stainless steels |
| 08/06/1997 | EP0787966A1 Process for melting and holding at temperature of metals |
| 08/05/1997 | US5654976 Method for melting ferrous scrap metal and chromite in a submerged arc furnace to produce a chromium containing iron |
| 07/31/1997 | WO1997027339A1 Method of processing burnt rubbish residues |
| 07/31/1997 | WO1997027337A1 Method for operating shaft furnace |
| 07/31/1997 | DE19614182C1 Water-cooled casting die for production of blocks or strips |
| 07/31/1997 | CA2216156A1 A process for processing waste incineration residues |
| 07/30/1997 | EP0786532A2 Briquette containing silicious residual matter, useful as additive for metallurgical purposes and process for the manufacture thereof |
| 07/23/1997 | EP0784708A1 Process and device for making liquid iron by non-electric and electric smelting |
| 07/23/1997 | EP0568578B1 Lance carriage |
| 07/23/1997 | CN1155065A Cooling system for two-assembly furnace lid |
| 07/17/1997 | DE19612383C1 Arc melting furnace |
| 07/16/1997 | EP0784193A1 Metal fusion furnace and metal fusing method |
| 07/16/1997 | CN1154720A Nozzle for blowing gas into molten metal and usage thereof |
| 07/16/1997 | CN1154411A Melting equipment |
| 07/15/1997 | US5648981 Cooling system for a two component furnace roof |
| 07/15/1997 | US5647288 Scrap conveyor having improved scrap pre-heating construction |
| 07/10/1997 | WO1997024464A1 Method for determination and control of the amount of nitrogen dissolved in metalic liquid phases and device for its realization |
| 07/08/1997 | US5645791 Charge preheater |
| 07/08/1997 | US5645772 Refractory ceramic mass for lining the bottoms of electric arc furnaces and process for their repair |
| 07/03/1997 | WO1997023656A1 Continuous smelting and refining of iron |
| 07/02/1997 | CN1153216A Melting oxygen synchronous steelmaking process and electrode therefor |
| 07/02/1997 | CN1153215A AOD top side blow furnace body and process thereof |
| 06/26/1997 | WO1997022975A2 Process for using contaminated metal parts |
| 06/26/1997 | DE19648306A1 Treatment of shredded scrap light constituents in a melt |
| 06/25/1997 | CN2256884Y Skimming ball thrower |
| 06/24/1997 | US5641336 Side wall of furnace contains an orifice opening into an adjacent tank capped with a vault through which excess flows to prevent damage to furnace |
| 06/19/1997 | WO1997021654A1 Process for reducing catalyst consumption and contaminated catalyst waste during the preparation of 1,2-dichloroethane |
| 06/19/1997 | DE19547298A1 Verfahren zur Verwertung kontaminierter Metallteile Process for the recovery of contaminated metal parts |
| 06/18/1997 | EP0779373A1 Method for direct use of chromite ore in the production of stainless steel |
| 06/18/1997 | EP0569448B1 A method of manufacturing stainless steel |
| 06/15/1997 | CA2184317A1 Direct use of chromite ore in the production of stainless steel |
| 06/12/1997 | WO1997020954A1 Simplified duplex processing of nickel ores and/or concentrates for the production of ferronickels, nickel irons and stainless steels |
| 06/12/1997 | DE19546068A1 Verfahren zur Reduzierung des Katalysatorverbrauchs und verunreinigter Katalysatorabfälle bei der Herstellung von 1,2-Dichlorethan Method of reducing the catalyst consumption and waste contaminated catalyst in the production of 1,2-dichloroethane |
| 06/12/1997 | DE19545831A1 Two-vessel electric-arc furnace |
| 06/11/1997 | EP0777751A1 Method and apparatus for electric steelmaking |
| 06/11/1997 | CN1151764A Method and device for directly feeding liquid metal from a ladle into ane lectric furnace |
| 06/04/1997 | EP0776983A1 Nozzle for blowing gas into molten metal and usage thereof |
| 06/04/1997 | CN2255433Y Multi-arris pyramidal slag bridge |
| 06/03/1997 | US5635130 For steelmaking furnaces |
| 06/03/1997 | US5634960 Feeding mixture containing scrap metal, quartzite, carbonaceous material and wood chips, melting, positioning above electrodes so that solid charge surrounds electrodes, tapping furnace; molten iron suitable for foundry purposes |
| 05/28/1997 | DE19604413C1 Gas flushing arrangement for metallurgical vessels |
| 05/28/1997 | CN1150837A Process for melting metal charge in rotary kiln, and rotary kiln for implementing such process |
| 05/28/1997 | CN1035017C Slag fomation method for adding magnesium in magnesium balls for smelting steel |
| 05/27/1997 | US5632937 Method of installing a refractory lining |
| 05/27/1997 | US5632800 Accelerated decarburization of Fe-C metal alloys |
| 05/22/1997 | WO1997018427A1 Safety device for a vessel jacket |
| 05/22/1997 | WO1997018337A1 Method for producing pre-treated molten metal castings |
| 05/22/1997 | WO1997018336A1 Process for the destruction of rubber-based materials and automobile fragmentation residues |
| 05/22/1997 | WO1997018335A2 Fireproof moulding plates with gas ducts |
| 05/22/1997 | DE19619204C1 Gas flushing system |
| 05/22/1997 | CA2237628A1 Fireproof moulding plates with gas ducts |
| 05/15/1997 | WO1997017475A1 Process for melting and refining ferrous scrap through use of oxygen injection |
| 05/15/1997 | WO1997017474A1 Exchange device for a blow lance |
| 05/15/1997 | DE19542446A1 Feuerfeste Formplatten mit Gasführungskanälen Refractory mold plates with gas guide channels |
| 05/14/1997 | EP0773300A1 Scrap melting method |
| 05/14/1997 | EP0772503A1 Slag control apparatus for molten metal vessels |
| 05/13/1997 | US5628958 Melt shop layout |
| 05/09/1997 | WO1997016572A1 Accelerated decarburization of iron-carbon melts |
| 05/09/1997 | WO1997016571A1 Method and apparatus to determine and control the carbon content of steel in a bof vessel |
| 05/07/1997 | EP0772015A1 Method and apparatus for preheating and melting scrap |
| 05/07/1997 | DE19538622C1 Dosing and conveying device for powdery pourable solids |
| 05/07/1997 | CN1034816C Steel plant equipment with closed tiltable arc furnace |
| 05/02/1997 | EP0770690A2 Process and installation for treating iron-scrap remainders |
| 05/02/1997 | EP0685000A4 Method and apparatus for slag free casting. |
| 05/01/1997 | WO1997015692A1 Process for decarbonising a high-chromium steel melt |
| 04/30/1997 | DE19625537C1 Method and apparatus for producing steel from scrap |
| 04/30/1997 | CN1148631A Method for smelting quick-speed steel by quick-speed steel abrasive dust and quick-speed steel iron oxide |
| 04/24/1997 | DE19610578C1 Ceramic gas flushing device for metallurgical vessels |
| 04/23/1997 | EP0769125A1 Process for melting a metal charge in a rotary kiln, and rotary kiln for implementing such process |
| 04/23/1997 | EP0682717A4 A slag defoaming composite. |
| 04/23/1997 | CN1148410A Method for producing steel in an electric arc furnace, and electric arc furnace therefor |
| 04/23/1997 | CN1148409A A. Edlinger (CH) |
| 04/22/1997 | US5622673 Gas purging means for wall-side installation in metallurgical melting vessels |
| 04/16/1997 | EP0768134A1 Device for fixing a cover on a refractory lined vessel |
| 04/16/1997 | EP0767843A1 Method and device for directly feeding liquid metal from a ladle into an electric furnace |
| 04/16/1997 | CN1034590C Production of steel-smelting metal raw materials by use of pig iron solid decarbonization method |
| 04/10/1997 | WO1997012997A1 Scrap melting method |
| 04/10/1997 | DE19541199C1 Wechselvorrichtung für eine Blaslanze Changing device for a blowing lance |
| 04/10/1997 | DE19540490C1 Verfahren zum Entkohlen einer Stahlschmelze A method of decarburization of steel melt |
| 04/09/1997 | EP0767022A1 Apparatus for changing nozzle bricks |
| 04/09/1997 | EP0766750A1 Process and plant for recycling iron-containing residues from the steel and iron industry |
| 04/09/1997 | CN1147277A Base electrode of DC heated metallurgical vessel |
| 04/03/1997 | WO1997012069A1 Material for use in manufacturing ingots for steel smelting treatment and a method of obtaining said material, ingot for steel smelting treatment, method and machine for obtaining said ingot |
| 04/03/1997 | WO1997012065A1 Method of melting tinned iron scrap |
| 04/02/1997 | EP0666930B1 Process for making steel and hydraulically active binders |
| 04/02/1997 | CN1146497A Method for directly smelting stainless steel by chromium ore fusion reduction |
| 03/27/1997 | DE19535014A1 Introducing granular solids into metal melts |
| 03/26/1997 | CN1145827A Method and apparatus of spreading material |