| 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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| 01/06/1988 | CN87203177U Rotating furnace button air supplying unit |
| 01/06/1988 | CN85108323B Oxygen gun with an auxiliary blow pistol for converter steel smelt |
| 01/05/1988 | US4717125 Metallurgical ladle with improved tilting lug |
| 01/05/1988 | CA1230974A1 Process for refining of chromium-containing molten steel |
| 12/30/1987 | WO1987007914A1 Method of torch guniting of metallurgical plant |
| 12/30/1987 | WO1987007913A1 Method and multi-nozzle tuyere for guniting of metallurgical plant |
| 12/29/1987 | US4715585 Method and apparatus for forming ladle well blocks |
| 12/29/1987 | CA1230740A1 Process of makingsteel in converter using a great amount of iron-bearing cold material |
| 12/23/1987 | EP0249959A1 Refractory mixture for refractory linings of metallurgical vessels |
| 12/23/1987 | EP0249656A1 Method for suppressing fuming in molten steel |
| 12/23/1987 | EP0249647A1 Fireproof tap hole |
| 12/22/1987 | US4715041 Bath electrode for pot furnace |
| 12/22/1987 | CA1230481A1 Sampling and/or measuring apparatus for immersion in molten metal |
| 12/17/1987 | DE3717887A1 Process for coating the refractory lining of a metallurgical melting furnace with a heat-resistant material |
| 12/16/1987 | EP0249131A2 Process of pyrorecombination of mixtures containing waste material |
| 12/16/1987 | EP0249093A2 Flux material for steelmaking |
| 12/16/1987 | EP0248971A1 Installation for preheating scrap |
| 12/15/1987 | US4713826 Method and apparatus for holding or increasing the temperature in a metal melt |
| 12/09/1987 | EP0248251A1 Automated installation to put bricks onto the interior face of a vessel |
| 12/08/1987 | US4711430 Side-injected metal refining vessel and method |
| 12/02/1987 | EP0247923A1 Method and apparatus for continuously charging a steelmaking furnace |
| 12/02/1987 | EP0247415A2 Alloy steel product, die blocks and other forgings and castings made thereof and a method to manufacture the product |
| 12/01/1987 | US4709905 Casing assembly for injecting material into a metallurgical vessel |
| 12/01/1987 | US4709903 Slag retaining device for use in converters, ladles, or the like |
| 11/25/1987 | CN87103410A Console for metallurgical ladle |
| 11/24/1987 | US4708738 Method for refining very small heats of molten metal |
| 11/24/1987 | US4708562 Apparatus for lining the inner wall of a vessel with bricks |
| 11/24/1987 | US4708482 Method and apparatus for measuring wear in the lining of refractory furnaces |
| 11/24/1987 | US4708328 Brick-lining a metallurgical vessel |
| 11/19/1987 | DE3616510A1 Jacketed blowing lance with forced cooling |
| 11/17/1987 | CA1229228A1 Fireproof gas-permeable construction elements |
| 11/11/1987 | EP0244551A1 Integrated metallurgical plant |
| 11/11/1987 | CN86103047A Process of self-decomposition for vessel slag afterheat |
| 11/10/1987 | US4706258 Iron, electric arc furnace |
| 11/10/1987 | US4705563 Methods and apparatus for reducing corrosion in refractory linings |
| 11/10/1987 | US4705261 Wire injection nozzle |
| 11/05/1987 | DE3614710A1 Process and converter for the manufacture of steel |
| 11/04/1987 | EP0244392A1 Housing for a metallurgical vessel |
| 11/03/1987 | US4704705 Two transistor DRAM cell and array |
| 10/27/1987 | US4703492 Joined carbon electrodes and method for the joining thereof |
| 10/27/1987 | US4702462 Water-cooled lance for blowing oxidizing gas onto a metal melt |
| 10/22/1987 | WO1987006331A1 Method and device for pre-heating waste metal for furnaces |
| 10/21/1987 | EP0242155A1 Improvements in or relating to injection elements for melt containing vessels |
| 10/20/1987 | US4701932 Method for regulating the electrodes in a furnace having freely burning electric arcs |
| 10/20/1987 | US4701217 Smelting reduction |
| 10/20/1987 | US4701216 Mixing scrap iron, coal, oxygen; burning; superheating with residual carbon |
| 10/20/1987 | US4701215 Apparatus for introducing substances into liquids e.g. metal melts |
| 10/20/1987 | US4700929 Mounting a metallurgical vessel |
| 10/14/1987 | EP0240998A1 Melting furnace and method for melting metal |
| 10/14/1987 | EP0240927A1 Side-injected metal refining vessel |
| 10/13/1987 | US4699654 Injecting inert gases for selective agitation |
| 10/13/1987 | US4699014 Molten metal sampler with sand cast mold part |
| 10/13/1987 | CA1228012A1 Burner in a drum |
| 10/07/1987 | EP0240485A1 Installation for producing steel from scrap |
| 10/07/1987 | EP0240444A1 Process and device to control the position of an injection lance in a metallurgical vessel |
| 10/07/1987 | EP0240214A1 Apparatus for mounting a siphon type converter tap hole pipe onto a converter vessel |
| 10/07/1987 | EP0239717A1 Very small steel refining vessel |
| 10/07/1987 | CN87100479A Decontamination plant on the metallurgical revolving furnace |
| 10/07/1987 | CN86101957A Process of separating and recovering valuable elements from pig iron |
| 10/06/1987 | US4698825 Carbon embedded in ceramic matrix |
| 09/30/1987 | EP0239152A1 Converter for preparing steel and a gas supply device for such a converter |
| 09/29/1987 | US4697274 Electric melting furnace arrangement as well as a method of influencing the composition of a mineral melt for producing wool |
| 09/29/1987 | US4697273 Electrode structure for a bath of molten metal |
| 09/29/1987 | US4696458 Method and plant for fully continuous production of steel strip from ore |
| 09/29/1987 | US4696456 Method of improving permeability of metallurgical vessels, and material for implementing the same |
| 09/29/1987 | CA1227322A1 Process for the repair of slide plates |
| 09/24/1987 | DE3609568A1 Manufacture of a cement from converter steel slags |
| 09/23/1987 | EP0237852A1 Process and installation for the continuous remelting of scrap |
| 09/22/1987 | US4695318 Method of making steel |
| 09/22/1987 | US4695043 Gas scavenging apparatus for metallurgical vessels |
| 09/22/1987 | US4695042 Lance supporting apparatus |
| 09/22/1987 | CA1227017A1 Destruction of toxic chemicals |
| 09/17/1987 | DE3615096C1 Equipment and process for continuous oxidising and refining of crude iron to give steel |
| 09/16/1987 | EP0236868A1 Process for manufacturing steel from scrap |
| 09/15/1987 | US4694465 Apparatus for automatically charging scrap into an arc furnace |
| 09/15/1987 | US4693274 Device for the selective injection of an oxidizing gas or a carrier gas with or without carbonaceous material to a liquid metal bath |
| 09/15/1987 | CA1226717A1 Continuous vacuum degassing and casting of steel |
| 09/10/1987 | DE3607222A1 Process for reducing iron ore to steel |
| 09/09/1987 | EP0236135A2 Vessel support arrangement |
| 09/09/1987 | EP0235621A2 Lance for blowing oxygen |
| 09/09/1987 | EP0235465A1 Electrical connecting device to be arranged in a wall of a metallurgical direct current furnace |
| 09/09/1987 | EP0235291A1 Method for obtaining vanadium slag |
| 09/08/1987 | US4692930 Floor of electrically heated melting furnace, particularly a direct current furnace |
| 09/08/1987 | US4692113 System using electric furnace exhaust gas to preheat scrap for steelmaking |
| 09/08/1987 | US4691899 Apparatus for reactor iron making |
| 09/03/1987 | DE3609923C1 Apparatus for melting down scrap to crude steel |
| 09/02/1987 | EP0235120A2 Method of extracting a sample from a melt-sump by means of a sampling probe and device for carrying out the method |
| 09/02/1987 | EP0234389A2 Tuyere for refining lances |
| 09/02/1987 | EP0234388A2 Lance for blowing oxygen |
| 09/01/1987 | US4690638 Water cooled scrap preheating bucket |
| 09/01/1987 | US4690387 Metallurgical plant for producing a mixed gas |
| 09/01/1987 | US4690386 Method of improving the service life of permeable refractory elements in bottoms of metallurgical vessels |
| 09/01/1987 | CA1226136A1 Device for placing slag retention devices in tapping converters |
| 08/26/1987 | EP0233404A1 Method and plant for continuous production of steel from ore |
| 08/25/1987 | US4689076 Pulverization of coal by collisions |
| 08/25/1987 | US4688773 Apparatus for laying a refractory lining on the inner wall of a vessel |
| 08/25/1987 | US4688772 Apparatus for sealing the skirt of a converter waste gas recovery system |
| 08/19/1987 | EP0232961A1 Method and apparatus for heating molten steel utilizing a plasma arc torch |
| 08/19/1987 | EP0232648A1 Injection lance for a metallurgical vessel and process for its fabrication |
| 08/18/1987 | US4687564 Refractory lining for electrochemical cell |