| Patents for C21C 7 - Treating molten ferrous alloys, e.g. steel, not covered by groups (11,430) |
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| 06/14/1988 | CA1237897A1 Production of alloy steels using chemically prepared v.sub.2o.sub.3 as a vanadium additive |
| 06/08/1988 | CN87108060A Injection tube for fibred material |
| 06/07/1988 | CA1237585A1 Method for producing steel in a top-blown vessel |
| 06/07/1988 | CA1237584A1 Method for producing steel in a top oxygen blown vessel |
| 06/07/1988 | CA1237583A1 System and method for producing steel in a top-blown vessel |
| 05/24/1988 | US4746361 Controlling dissolved oxygen content in molten steel |
| 05/24/1988 | US4746360 Iron alloys, process and apparatus for introducing highly reactive metals into molten metal and process and product for removing impurities from molten metal |
| 05/24/1988 | CA1236979A1 Rapid decarburization steelmaking process |
| 05/19/1988 | DE3721945A1 Method and appliance for operating a pressurised electroslag remelting plant |
| 05/19/1988 | DE3721944A1 Electrode rod for plants for remelting consumable electrodes in a closed vessel |
| 05/18/1988 | EP0267609A1 Production of steels containing low melting point metals |
| 05/17/1988 | US4744544 Refractory erosion visual indicator |
| 05/10/1988 | US4742995 Apparatus for introducing treatment substances into liquids |
| 05/05/1988 | DE3637533A1 Blowing lance suitable for scavenging with solid material |
| 05/05/1988 | DE3637065A1 Ladle with heating device |
| 05/03/1988 | US4741772 Si contained ferroalloy addition as a weak pre-deoxidation process in steelmaking |
| 04/27/1988 | EP0265038A1 Method of making steel |
| 04/27/1988 | EP0264385A1 Injection of substances into high temperature liquids. |
| 04/26/1988 | US4740242 Method for transferring heat to molten metal, and apparatus therefor |
| 04/26/1988 | US4740241 For simultaneously introducing a refining agent and bubbling gas through molten metal |
| 04/21/1988 | DE3634106A1 Use of the residue arising in the recovery of pickling acid, and process for producing an additive slag former |
| 04/20/1988 | CN87104146A 覆盖剂 Cover agent |
| 04/19/1988 | US4738719 Steel making flux |
| 04/19/1988 | US4738714 Powder filled tube and a method for the continuous manufacture of such tube |
| 04/14/1988 | DE3711528A1 Refining and degassing molten steel |
| 04/13/1988 | EP0263255A1 Method and agent for heating and refining at the same time molten metals |
| 04/12/1988 | CA1234989A1 Process for refining hot metal |
| 04/07/1988 | DE3633925A1 Method and apparatus for the introduction of an additive into a metal melt, in particular an additive which floats and/or gasifies |
| 04/06/1988 | CN86106459A Gas-cleaning device of melting metal container |
| 04/05/1988 | US4735398 Method of improving the service life of permeable refractory elements in bottoms of metallurgical vessels |
| 03/29/1988 | US4734551 Method and apparatus for heating molten steel utilizing a plasma arc torch |
| 03/29/1988 | CA1234495A1 Method and apparatus for the injection of wire into molten steel |
| 03/29/1988 | CA1234488A1 Solide particle accelerator |
| 03/23/1988 | CN86107281B Dutside furnace refining method to produce high purity bearing steel |
| 03/22/1988 | US4732607 Oxygen gas blowing |
| 03/16/1988 | CN85100331B Synthetic metallurgical blowing powder and its preparation |
| 03/15/1988 | US4730814 Blast pipe for refining nozzle |
| 03/15/1988 | CA1233989A1 Method of vaporizing additives in metal melts |
| 03/10/1988 | WO1988001651A1 Tundish for mixing alloying elements with molten metal |
| 03/08/1988 | US4729873 Process and apparatus for producing steel |
| 03/08/1988 | US4729548 Refractory coating for metal |
| 03/08/1988 | CA1233646A1 Metal purification process by insufflation |
| 03/02/1988 | EP0257718A1 Injectable reagents for molten metals |
| 03/01/1988 | US4728361 Iron alloys, process and apparatus for introducing highly reactive metals into molten metal and process and product for removing impurities from molten metal |
| 02/25/1988 | DE3628185A1 Immersion lance |
| 02/24/1988 | EP0256091A1 Magnesium calcium oxide composite |
| 02/23/1988 | US4726839 Process and an arrangement for the production of steel from sponge iron |
| 02/17/1988 | CN87200025U Splash guard |
| 02/17/1988 | CN87104689A Improvements in nozzles for injecting substances into liquids |
| 02/16/1988 | US4725310 Method of purifying steel |
| 02/16/1988 | US4725047 Device for introducing gas into molten metal |
| 02/16/1988 | CA1232766A1 Agents for the removal of impurities from a molten metal and a process for producing same |
| 02/16/1988 | CA1232762A1 Process to control the shape of inclusions in steels |
| 01/19/1988 | US4720837 Ladle furnace |
| 01/19/1988 | CA1231533A1 Method of producing steels of great purity and low gas content in steel mills and steel foundries, and apparatus therefor |
| 01/14/1988 | WO1988000247A1 Improvements in nozzles for injecting substances into liquids |
| 01/14/1988 | WO1988000246A1 Improvements in apparatus for injecting substances into liquids |
| 01/13/1988 | EP0252684A1 Improvements in nozzles for injecting substances into liquids |
| 01/13/1988 | CN87200659U Liquid-metal pruifying device |
| 01/13/1988 | CN87104829A Improvements in apparatus for injecting substances into liquids |
| 01/12/1988 | US4718940 Method of manufacturing alloy for use in fabricating metal parts |
| 01/12/1988 | US4718646 Ladle head |
| 01/12/1988 | US4718645 Ladle stand arrangement for treating molten metal |
| 01/12/1988 | CA1231239A1 Method for obtaining solid metal particles from a metal bath |
| 01/07/1988 | EP0251604A1 Improvements in apparatus for injecting substances into liquids |
| 01/06/1988 | CN85108323B Oxygen gun with an auxiliary blow pistol for converter steel smelt |
| 01/05/1988 | CA1230974A1 Process for refining of chromium-containing molten steel |
| 01/05/1988 | CA1230973A1 Composite tubular stapled and filled metal windable sheath |
| 12/29/1987 | CA1230740A1 Process of makingsteel in converter using a great amount of iron-bearing cold material |
| 12/23/1987 | EP0249656A1 Method for suppressing fuming in molten steel |
| 12/22/1987 | US4715041 Bath electrode for pot furnace |
| 12/22/1987 | US4714598 Cerium oxide, high temperature |
| 12/22/1987 | CA1230480A1 Gas plug for metallurgical vessels |
| 12/22/1987 | CA1230479A1 Metallurgical gas plug |
| 12/16/1987 | EP0249131A2 Process of pyrorecombination of mixtures containing waste material |
| 12/16/1987 | EP0249098A1 Installation for reheating liquid steel tapped from a transport ladle |
| 12/16/1987 | EP0249093A2 Flux material for steelmaking |
| 12/15/1987 | US4713826 Method and apparatus for holding or increasing the temperature in a metal melt |
| 12/15/1987 | US4713180 Open-celled foam structure of silicon carbide, silica, alumina and refractory inorganic binder |
| 12/08/1987 | US4711663 Cored wire |
| 12/08/1987 | US4711430 Side-injected metal refining vessel and method |
| 12/08/1987 | US4711429 Using turbulence from force of ladle stream; uniformity |
| 12/05/1987 | CN86205977U Fast alkality and desulfuration adjuster for slag of a closed double-valve blast-furnace |
| 12/02/1987 | EP0247415A2 Alloy steel product, die blocks and other forgings and castings made thereof and a method to manufacture the product |
| 12/02/1987 | EP0247354A1 Process for the adduction of metal elements in metal foundings |
| 12/01/1987 | US4709905 Casing assembly for injecting material into a metallurgical vessel |
| 11/25/1987 | EP0246356A1 Method for adding bismuth to steel in a ladle |
| 11/24/1987 | US4708897 Composite product having a tubular metal casing with a welt-type seam, and a core in powder form, which can be rolled up |
| 11/24/1987 | US4708738 Method for refining very small heats of molten metal |
| 11/24/1987 | US4708737 Magnesium or alluminum or alloys |
| 11/19/1987 | DE3616510A1 Jacketed blowing lance with forced cooling |
| 11/18/1987 | CN87103463A Steel making flux |
| 11/17/1987 | CA1229228A1 Fireproof gas-permeable construction elements |
| 11/11/1987 | EP0245107A1 Steel making flux |
| 11/11/1987 | CN87103098A Post-mix method and system for supply of powderized materials |
| 11/10/1987 | US4705561 Magnesium calcium oxide composite |
| 11/10/1987 | US4705261 Wire injection nozzle |
| 11/10/1987 | CA1228984A1 Wire injection apparatus |
| 10/28/1987 | EP0243269A2 Post-mix method and system for supply of powderized materials |
| 10/27/1987 | US4702767 Oxidatively scouring, dephosphorization, reducing refining by agitation, vacuum degassing |