| 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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| 02/05/1998 | WO1998004751A1 A process for the direct production of cast iron from iron bearing ore, and an apparatus suitable to carry out said process |
| 02/05/1998 | WO1998004750A1 Method for separating titanium and/or vanadium from pig iron |
| 02/05/1998 | DE19637246A1 Melting furnace with at least one lance penetrating into its interior, lance and method for its control |
| 02/05/1998 | DE19637238A1 Melting furnace with at least one lance penetrating into interior |
| 02/04/1998 | CN1172166A Method for furnace protection by slag blowing of convertor with tonnage below loot |
| 02/03/1998 | US5715272 Device for charging an electric furnace |
| 02/03/1998 | US5714113 Apparatus for electric steelmaking |
| 02/03/1998 | CA2059132C Metallurgical vessel and method of making the refractory lining of such vessels |
| 01/28/1998 | EP0821071A1 Vacuum treatment of dust exhausted from iron and steel melting furnace for recovery of lead and zinc |
| 01/28/1998 | EP0820528A1 Iron smelting process and plant according to the multiple zone smelting process |
| 01/28/1998 | CN1171537A Method of operating arc furnace, and arc furnace |
| 01/28/1998 | CN1171446A Method for controlling arc of DC arc furnace by tilting top electrode |
| 01/28/1998 | CN1171445A Oxygen steelmaking |
| 01/22/1998 | WO1998002588A1 A top injection lance |
| 01/21/1998 | EP0819488A2 Sliding gate closure for a molten metal containing vessel |
| 01/21/1998 | EP0819182A1 A method of producing metals and metal alloys |
| 01/21/1998 | CN1171136A Tilting metallurgical unit comprising several vessels |
| 01/21/1998 | CN1170864A Direct-fired stratified atmosphere furnace system |
| 01/21/1998 | CN1170763A Method for producing refining flux in steel making and use |
| 01/20/1998 | US5709835 Heating molten metal |
| 01/15/1998 | WO1998001590A1 Process for reusing dusts from metallurgical processes, such as steel converter dusts containing zinc |
| 01/15/1998 | WO1998001588A1 Method for making steel in a liquid melt-fed electric furnace |
| 01/15/1998 | CA2259522A1 Method for making steel in a liquid melt-fed electric furnace |
| 01/14/1998 | EP0818544A1 Tap-hole for a converter |
| 01/14/1998 | EP0818543A1 Method for operating shaft furnace |
| 01/14/1998 | CN1170440A Process and apparatus for manufacture of steel from iron carbide |
| 01/14/1998 | CN1037011C D. C. furnace for melting scrap iron |
| 01/08/1998 | WO1998000568A1 Arc furnace with an electrode receiving chamber |
| 01/08/1998 | WO1998000255A1 Stopper rod |
| 01/08/1998 | DE19626389A1 Lichtbogenofen mit Elektrodenaufnahmeraum Arc furnace electrode receiving space |
| 01/08/1998 | CA2259998A1 Stopper rod |
| 01/08/1998 | CA2259180A1 Arc furnace with an electrode receiving chamber |
| 01/07/1998 | EP0816517A1 Preventing skull accumulation on a steelmaking lance |
| 01/07/1998 | EP0815994A2 Fibre composite article |
| 01/07/1998 | EP0815266A1 Method of processing burnt rubbish residues |
| 12/30/1997 | US5702502 Method for direct use of chromite ore in the production of stainless steel |
| 12/30/1997 | CA2070197C Lining for a direct-current electric arc furnace |
| 12/29/1997 | EP0814310A1 Process and installation for air separation |
| 12/25/1997 | CA2208470A1 Preventing skull accumulation on a steelmaking lance |
| 12/24/1997 | CN1168416A Dispersed air-supplying element for bottom air supply of metallurgical furnace and its manufacture |
| 12/23/1997 | US5700308 Method for enhancing reaction rates in metals refining extraction, and recycling operations involving melts containing ionic species such as slags, mattes, fluxes |
| 12/17/1997 | CN1168157A Converter top-blow refining method having excellent decarburization characteristics and top-blow lance for converter |
| 12/17/1997 | CN1167837A Method for direct use of chromite ore in production of stainless steel |
| 12/17/1997 | CN1167830A DC arc electric slag heating ladle furnace and control method thereof |
| 12/16/1997 | US5698759 Treatment of polyvinylchloride |
| 12/16/1997 | US5698010 Scrap melting method |
| 12/03/1997 | EP0362253B1 Process for treating liquid metals |
| 12/03/1997 | CN1166530A Flow-dividing treatment method and flow divider for dedusting waste water from converter |
| 11/27/1997 | WO1997044497A1 Pressure vessel with adjustable conduit for feeding flowable materials and application to ironmaking in cyclone type smelt-reduction reactor |
| 11/26/1997 | CN1166198A Metal fusion furnace and metal fusing method |
| 11/26/1997 | CN1166184A Scrap melting method |
| 11/25/1997 | US5690891 Process for the production of alloys in an inductively heated cold-walled crucible |
| 11/25/1997 | CA2132052C Accretion controlling tuyere |
| 11/20/1997 | WO1997043592A1 Telescoping device for cleaning eccentrically positioned tapping holes of electric arc furnaces |
| 11/20/1997 | WO1997043062A1 Gas rinsing device |
| 11/20/1997 | DE19621141A1 Method and apparatus for treating metal melts |
| 11/20/1997 | CA2226361A1 A gas purging device |
| 11/19/1997 | CN1165540A Chromium ore smelting redution process |
| 11/06/1997 | WO1997041270A1 Multipurpose lance |
| 11/06/1997 | CA2252637A1 Multipurpose lance |
| 11/05/1997 | EP0805217A2 Oxygen steelmaking |
| 10/28/1997 | US5681527 Molten metal holding apparatus |
| 10/28/1997 | US5681526 Method and apparatus for post-combustion of gases during the refining of molten metal |
| 10/22/1997 | EP0802262A1 Converter top-blow refining method having excellent decarburization characteristics and top-blow lance for converter |
| 10/21/1997 | US5680413 Electric arc melting furnace |
| 10/15/1997 | EP0800879A2 Water cooled mould for manufacturing ingots, process for continuous casting and process for electro-slag refining |
| 10/14/1997 | US5677925 Power converter device for direct current power supply to an electric arc furnace |
| 10/14/1997 | CA2097006C Composite lance |
| 10/14/1997 | CA2019050C Method and apparatus for steel making |
| 10/09/1997 | WO1997037048A1 Process for separating sulphide-containing materials using hydrogen peroxide |
| 10/08/1997 | EP0799899A1 Chromium ore smelting reduction process |
| 10/08/1997 | EP0799323A1 Tilting metallurgical unit comprising several vessels |
| 10/08/1997 | EP0711397B1 Charge preheater |
| 10/08/1997 | CN2264188Y Mixed hole-shape multiporous oxygen nozzle |
| 10/02/1997 | DE19613746A1 Verfahren zur Auftrennung sulfidhaltiger Restprodukte des Bergbaus und der Metallverarbeitung A process for separating sulphide waste products of mining and metal processing |
| 10/01/1997 | EP0798389A2 Method of operating an arc furnace and arc furnace |
| 09/28/1997 | CA2198411A1 Method of operating an arc furnace, and an arc furnace |
| 09/24/1997 | EP0796417A1 Nozzle and method of blowing hot metal |
| 09/24/1997 | EP0796351A1 Smelting installation with a current supply network with a relatively short-circuit rating |
| 09/18/1997 | WO1997028285A3 Producing stainless steels in parallel operated vessels |
| 09/17/1997 | EP0795614A1 Process for operating an installation comprising a metal treatment unit and a unit for the treatment of gas |
| 09/17/1997 | CN1159562A Electric arc controller |
| 09/16/1997 | US5666825 Introduction or withdrawal of liquid rich in nitrogen to maintain purities of oxygen and nitrogen rich fractions |
| 09/11/1997 | DE19547885C1 Pneumatic holder for lance manipulator |
| 09/10/1997 | EP0793732A1 Direct current arc furnace with two or more electrodes |
| 09/10/1997 | EP0793731A1 Process and apparatus for the manufacture of steel from iron carbide |
| 09/10/1997 | EP0733299B1 Submerged arc furnace with vertically movable frame |
| 09/10/1997 | EP0571599B1 Melting apparatus and method |
| 09/10/1997 | CN1158902A Converter protecting method with splash slag |
| 09/03/1997 | EP0792939A1 Method of melting tinned iron scrap |
| 09/03/1997 | EP0792938A1 Scrap melting method |
| 09/03/1997 | EP0792378A1 Process and device for blowing oxygen-containing gas with and without solid material on a metal melt in a metallurgical vessel, especially an rh vessel |
| 09/03/1997 | EP0723487B1 Method of adjusting the composition of a molten metal such as steel, and plant for implementation thereof |
| 09/03/1997 | EP0628086B1 Tilting device for a direct current arc furnace and process for emptying the furnace |
| 09/02/1997 | US5662860 Apparatus for producing molten pig iron by direct reduction |
| 08/28/1997 | WO1997018335A3 Fireproof moulding plates with gas ducts |
| 08/27/1997 | EP0791932A2 Semiconductor memory device including main/sub-bit line arrangement |
| 08/27/1997 | CN2260808Y Dc. electric-arc electroslag heating ladle furnace |
| 08/27/1997 | CN1158147A Process and device for making ferrous iron |
| 08/21/1997 | WO1997030320A1 Iron-base scrap preheating apparatus and method |