| 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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| 04/07/1993 | EP0536018A1 Wall electrode for metallurgical electric direct current furnace |
| 04/07/1993 | EP0535386A1 Process for producing a basic iron for nodular cast iron |
| 04/07/1993 | CN1070690A Method to make mud balls for dedusting steel-smelting converter |
| 04/06/1993 | US5200136 Arrangement for installing and removing a lance into and from a metallurgical vessel |
| 04/06/1993 | CA1315543C Metallurgical tuyere and method of calibrating same |
| 04/06/1993 | CA1315541C Pneumatic steelmaking vessel and method of producing steel |
| 03/31/1993 | CN1070426A Production of steel-smelting metal raw materials by use of pig iron solid decarbonization method |
| 03/30/1993 | US5199043 Lining for a direct-current electric arc furnace |
| 03/30/1993 | US5198706 Ferroelectric programming cell for configurable logic |
| 03/30/1993 | US5198179 Gas injector |
| 03/30/1993 | US5197847 Device for automatic handling of objects |
| 03/30/1993 | CA1315327C Metallurgical vessel |
| 03/30/1993 | CA1315102C Apparatus for the introduction of reagents in powder form into a melting pan |
| 03/30/1993 | CA1315101C Sealing injection apparatus for injecting substances into molten metals |
| 03/30/1993 | CA1315100C Plug for use in a steel converter to minimize tapping off of slag |
| 03/30/1993 | CA1315099C Tuyere assembly and positioning method |
| 03/26/1993 | CA2078640A1 Electric arc furnace bottom stir tuyere assembly |
| 03/24/1993 | CN1070302A Complete dc arc furnace equipment |
| 03/23/1993 | US5196072 Carbon dioxide and oxygen, pollution control |
| 03/18/1993 | WO1993005626A1 D.c. furnace with a hearth electrode, hearth electrode and electrode block, as well as process for operating said furnace |
| 03/18/1993 | WO1993004804A1 Improved molten metal sampling device and method |
| 03/18/1993 | DE4130397A1 Gleichstromofen mit einer herdelektrode, herdelektrode und elektrodenblock sowie betriebsverfahren fuer diesen ofen Oven-DC furnace with an electrode herd, herd electrode and electrode block and operating procedures for this |
| 03/17/1993 | CN2128250Y Furnace mouth water tank for converter |
| 03/17/1993 | CN1020116C Electric furnace steelmaking method capable of reducing manganese from mangamese-containing ore |
| 03/17/1993 | CN1020115C Method for producing chromium-containing molten iron with low sulphur concentration |
| 03/10/1993 | EP0530932A2 Metallurgical container for a DC arc installation |
| 03/10/1993 | EP0530534A1 Lining for a direct-current arc furnace |
| 03/10/1993 | CN2127939Y Multi-function oxygen lance head for small oxygen top-blown rotary converter |
| 03/03/1993 | EP0192682B1 Method and apparatus for flame generation |
| 03/02/1993 | US5191592 D.c. electric arc furnace with consumable and fixed electrode geometry |
| 03/02/1993 | US5190719 Plant for the production of molten metals |
| 03/02/1993 | CA1313952C Stirring brick with shaped gas volume control openings |
| 02/24/1993 | EP0527863A1 Converter vessel support assembly |
| 02/23/1993 | US5189682 Method for increasing the efficiency of a direct current electric arc furnace |
| 02/23/1993 | US5188661 Used for desulfurization of iron and steel |
| 02/18/1993 | DE4127066A1 Using scrap to produce steel - with converter off-gas passing to firing chamber generally used for off-gases from pig iron@-producing cupola furnace |
| 02/17/1993 | EP0527363A1 Gas flushing plug for electric arc furnaces and related arc furnace |
| 02/16/1993 | US5186740 Method for preheating scrap iron by pyrolysis of resinous residues contained therein, with total recovery of their energy content and improvement of the steelmaking cycle |
| 02/11/1993 | DE4126521A1 Refractory element for converter bottom linings - has increased life span is trapezoidal in shape |
| 02/10/1993 | EP0526664A1 Apparatus for preparing and feeding iron scraps to an electrical furnace |
| 02/03/1993 | CN1068595A Temp. raising agent for top-blast steel -smelting |
| 02/02/1993 | US5183498 Gas barrier for the refining superalloy |
| 01/27/1993 | EP0449835A4 Improved consumable injection lance |
| 01/27/1993 | EP0161259B1 Charge forming preheating apparatus and method |
| 01/27/1993 | CN1068414A Crack sealing method for inclined open hearth |
| 01/26/1993 | US5182565 In-furnace slag level measuring method and apparatus therefor |
| 01/21/1993 | DE4220306A1 Einrichtung zum freihalten einer lanzenoeffnung eines metallurgischen gefaesses Means for holding a free lanzenoeffnung a metallurgical vessel |
| 01/19/1993 | US5180423 Purification by preferential oxidation of impurities |
| 01/12/1993 | US5178818 Metallurgical furnace installation |
| 01/07/1993 | EP0521844A1 Process for the energetic utilization of the waste from shredded scrap |
| 01/07/1993 | EP0328613B1 Metallurgical controlling method |
| 01/05/1993 | US5177763 Furnace bottom structure of direct current electric furnace |
| 12/29/1992 | CA1311918C Lance for treating molten metal |
| 12/29/1992 | CA1311916C Tuyere for treating molten metal |
| 12/23/1992 | EP0519553A1 Method of repair of the refractory lining of the wall of a shaft furnace |
| 12/22/1992 | CA1311787C Method of bottom blowing operation of a steel making electric furnace |
| 12/22/1992 | CA1311618C Process for melting scrap iron, sponge iron and/or solid pig iron or the like |
| 12/22/1992 | CA1311609C Molten metal taphole design to improve yield and cleanliness |
| 12/16/1992 | EP0518070A1 Direct current arc furnace facility |
| 12/16/1992 | CN1019457B Steel-making apparatus having metallurgical furnace and subsequent treating device |
| 12/15/1992 | US5171511 Tuyere and method for discharging gas into a furnace |
| 12/15/1992 | CA2070951A1 Direct-current arc furnace plant |
| 12/10/1992 | WO1992022181A1 Process and device for melting scrap metal in a d.c. arc furnace |
| 12/10/1992 | DE4118756A1 Verfahren und vorrichtung zum einschmelzen von schrott in einem gleichstromlichtbogenofen Method and apparatus for melting scrap in a DC arc furnace |
| 12/09/1992 | CN1066888A Air supply element for metallurgical furnace bottom and producing method |
| 12/08/1992 | US5168764 Method and apparatus for taking metal samples |
| 12/03/1992 | DE4117834A1 Scrap pre-heating process for discontinuous steel-making processes - using waste gas from melting unit in scrap preheater with combustion chamber and intermittent fuel injection |
| 12/03/1992 | DE4117588A1 Coupling device for gas line to metallurgical container - has fixed baseplate with hinged joint for lever which acts together with elastically loaded intermediate element |
| 12/02/1992 | CN2123536U Open hearth single channel oxygen gun shant sleeve assembled jet |
| 12/02/1992 | CN1066685A Smelting method of stainless steel in arc furnace with top and bottom complex blowing |
| 12/01/1992 | US5167904 Device for the automatic coupling of a blowing-in lance to a manifold |
| 12/01/1992 | US5167699 Without polluting the air |
| 12/01/1992 | CA1310836C Process for continuously melting of steel |
| 12/01/1992 | CA1310827C Apparatus for charging a melting gasifier with gasification media and sponge iron |
| 11/25/1992 | EP0515255A1 Process and device for the aspiration f fumes or gases from a metallurgical vessel and device therefor |
| 11/25/1992 | EP0514526A1 Facility for producing molten metal in an electric furnace. |
| 11/25/1992 | CN1019204B Recovery and utilization method of electric furnace powder dust |
| 11/24/1992 | US5166950 Process and apparatus for melting a furnace charge |
| 11/23/1992 | CA2068900A1 Method and apparatus for sucking gases or fumes into a metallic box; electric furnace with such a device |
| 11/17/1992 | CA1310193C Very small steel refining vessel |
| 11/11/1992 | CN2121459U Oxygen lance blow head with wing type auxiliary oxygen flow way |
| 11/11/1992 | CN1019026B Gas bubbing brick |
| 11/10/1992 | CA1309863C Consumable injection lance |
| 11/10/1992 | CA1309861C Pneumatic injection of powder or granule through submerged tuyeres |
| 11/04/1992 | CN1065884A Gas bottom blowing and supplying system for electric arc furnace |
| 11/03/1992 | US5160478 Gas flushing apparatus for metallurgical vessel |
| 11/03/1992 | CA1309583C Tap hole plugs for metallurgical vessels |
| 10/29/1992 | WO1992018818A1 Taphole design and pouring method |
| 10/29/1992 | CA2108578A1 Taphole design and pouring method |
| 10/28/1992 | EP0511195A1 Process for continuous melting of shredded scrap and mixed scrap |
| 10/28/1992 | EP0511194A1 Process for melting of scrap and installation for performing said process |
| 10/28/1992 | EP0510518A1 Method for producing a water-cooled nozzle-head for a blowing-lance |
| 10/27/1992 | US5158590 Process for melting and refining a charge |
| 10/24/1992 | WO1992018819A1 Lance for immersion in a pyrometallurgical bath and method involving the lance |
| 10/24/1992 | CA2109122A1 Lance for immersion in a pyrometallurgical bath and method involving the lance |
| 10/22/1992 | DE4112836A1 Gas jet assembly - has solid inner with outer spiral channel and concentric channelled grooves for consistent gas mixtures |
| 10/21/1992 | CN2119426U Single runner shunt jet of oxygen lance for open-hearth furnace |
| 10/20/1992 | US5156671 Method for dephosphorization of chromium-containing molten pig iron with reduced oxidation loss of chromium |
| 10/20/1992 | CA2064417A1 Multifluid nozzle for blowing gaseous fluids into metal-containing molten materials |
| 10/14/1992 | CN2118737U Automatic offtake for converter waste gas |