Patents
Patents for C21C 5 - Manufacture of carbon steel, e.g. plain mild steel, medium carbon steel, or cast-steel (14,381)
08/1995
08/30/1995CN1107517A A converter process for the production of iron
08/24/1995DE4406563A1 Oxygen-blown converter blowing nozzle
08/23/1995CN1107274A Slide gate valve having a cementless joint between the valve and a metallurgical vessel
08/23/1995CN1107181A Method for producing reducible iron-containing material having less clustering during direct reduction and products thereof
08/22/1995US5444734 Device for lifting and moving the roof of a spray cooled furnace
08/22/1995US5444733 Electric arc furnace with alternative sources of energy and operating method for such electric furnace
08/22/1995US5443699 Method for refining molten metals and recovering metals from slags
08/22/1995US5443572 Apparatus and method for submerged injection of a feed composition into a molten metal bath
08/22/1995CA1336746C Process for producing chromium containing molten iron
08/22/1995CA1336745C Method for producing chromium containing molten iron with low sulphur concentration
08/17/1995WO1995021713A1 Slag control shape release apparatus for molten metal vessels
08/17/1995DE4404313A1 Method and plant for melting and treating metals
08/16/1995EP0666930A1 Process for making steel and hydraulically active binders.
08/15/1995CA1336646C Reduced chromium-ore bearing powder and method for producing the same
08/10/1995DE19502683A1 Floor anode formation for metallurgical vessel
08/09/1995EP0666325A1 Direct curvent furnace for melting of metal
08/09/1995EP0666324A1 Installation for coupling a movable metallurgical vessel to a flexible gas conduit
08/09/1995EP0665899A1 Process and device for melting scrap
08/08/1995CA1336539C Lance holder for a compact lance
08/03/1995CA2140219A1 Device for coupling a metallurgical carriage to a flexible conduit
08/02/1995EP0474883B1 Dc electric furnace for melting metal
08/02/1995CN1106132A Controlling pouring stream and receiver environment
08/01/1995US5438588 Direct current-electric arc furnace system
08/01/1995US5437160 Process and installation for the separation of air
07/1995
07/27/1995WO1995020022A1 Utilizing discarded carbon
07/27/1995WO1995004910A1 Charge preheater
07/27/1995CA2179885A1 Utilizing discarded carbon
07/26/1995CN2203907Y Metal-working equipment for mfg. integral supporting ring ear shaft of revolving furnace
07/25/1995US5435948 Surface treatment of refractories
07/25/1995CA1336360C Method for manufacturing iron-boron-silicon alloy
07/20/1995DE4401244A1 Decarburising steel melts in reduced time
07/19/1995EP0663579A1 Method of producing iron melt
07/19/1995EP0663450A1 Method of producing iron melt
07/19/1995EP0663449A1 Method of making high nitrogen content steel
07/18/1995CA2139801A1 Tap hole plugging device
07/13/1995DE19500404A1 Loading of materials into a metallurgical vessel
07/11/1995US5431709 Accretion controlling tuyere
07/06/1995WO1995018346A1 Nozzle and method of blowing hot metal
07/06/1995CA2179917A1 Nozzle and method of blowing hot metal
07/05/1995EP0661507A1 Process and apparatus for eliminating heavy metals and heavy metal containing compounds
07/05/1995CN1104838A Apparatus for preheating and supplying scraps
07/05/1995CN1104837A DC arc furnace
07/05/1995CN1104836A DC ARC furnace
07/05/1995CN1104830A Slide gate valve having replaceable refractory valve plate assembly and method of replacing the same
07/04/1995US5429342 Slide gate nozzle including sequentially replaceable refractory sliding plates and refractory plate assembly employable therein
07/04/1995CA1336136C Process for feeding heat energy into a molten metal bath
06/1995
06/29/1995WO1995017528A1 A method of processing ferrous materials
06/29/1995DE4419816C1 Titanium-contg. additive used in refractory linings and as a slagging agent
06/28/1995EP0660647A1 Method for controlling a DC arc furnace
06/28/1995EP0659887A1 Melt-reduction process for production pf pig iron in the converter
06/28/1995CN1104257A Fluxing method for electric-arc furnace steel-smelting
06/27/1995CA1336042C Method of charging chromium ores in a smelting reduction
06/23/1995CA2136521A1 Regulation method for a dc arc furnace
06/22/1995WO1995016796A1 Loading device for feeding liquid metal into an electric furnace
06/22/1995WO1995016795A1 Furnace spraying repair device
06/22/1995CA2177058A1 Loading device for feeding liquid metal into an electric furnace
06/15/1995WO1995016335A1 Submerged arc furnace with vertically movable frame
06/15/1995WO1995016056A1 Method of monitoring the state of the surface of molten metal and a device for carrying out said method
06/14/1995EP0657710A1 Dc arc furnace
06/14/1995EP0657549A1 Process for producing an iron melt
06/14/1995DE4439397A1 Steel scrap smelting
06/14/1995DE4407861C1 Arc oven loading device
06/14/1995CN1028907C Probe for taking gas samples and temperature measurement in shaft furnace
06/13/1995US5425047 Closed induction furnace with a tilting apparatus
06/13/1995US5423900 Blowing pressurized gases through nozzles below melt surface
06/13/1995US5423522 Slag control shape release apparatus for molten metal vessels
06/11/1995CA2137766A1 Process for producing an iron melt
06/08/1995DE4341233A1 Charging vessel esp. for arc furnace designed for noise and vibration redn. during vessel filling
06/08/1995CA2137419A1 Process and device for removing heavy metals and compounds containing heavy metals
06/07/1995WO1995018238A1 Process for the continuous refining of metal and a facility for carrying out said process
06/06/1995US5421561 Gas stir devices with refractory material erosion depth indicator and method of making the same
06/06/1995US5421560 Slag control apparatus for molten metal vessels
06/03/1995CA2110567A1 Process for using foamed slag in stainless steel production
05/1995
05/31/1995EP0655508A1 Process for using foamed slag in stainless steel production in the electric arc furnace
05/31/1995CN2199215Y Looling water tank for revolving furnace mouth
05/30/1995US5419669 Installation for lining an internal wall of an enclosure with brickwork
05/24/1995EP0654314A1 Controlling pouring stream and receiver environment
05/24/1995DE4405382C1 Burner pipe for burners in industrial furnaces
05/23/1995US5417740 Method for producing steel
05/23/1995US5417739 Blowing oxygen in molten iron for decarbonization then blowing nitrogen into melt
05/17/1995EP0653496A1 Process and apparatus for the recovery of valuable materials
05/16/1995US5415692 Apparatus for applying material against the wall of a molten metal discharging hole
05/16/1995CA2135830A1 Process and device for the extraction of valuable substances
05/11/1995WO1995012797A1 Cooling of hot bodies
05/11/1995DE4435378A1 Metallurgical vessel
05/11/1995CA2172806A1 Cooling of hot bodies
05/10/1995EP0652296A1 Method of and apparatus for manufacturing medium and low carbon ferromanganese
05/10/1995EP0652292A1 Direct current electric arc furnace
05/10/1995CN1102441A Steel plant equipment with closed tiltable arc furnace
05/09/1995US5414661 Semiconductor memory device
05/03/1995EP0650384A1 Treatment of polyvinylchloride.
05/03/1995EP0190313B2 Method and apparatus for continuous steelmaking
05/02/1995US5411570 Steelmaking process
05/02/1995US5411393 Premix burner for furnace with gas enrichment
04/1995
04/27/1995DE4419811C1 Gas bubble brick with wear indicator
04/26/1995EP0649911A1 Reflection device in the mouth of a lance for applying bonded minerals and process for using said lance
04/26/1995EP0649478A1 Method for producing steel
04/26/1995EP0649477A1 Electric furnace for melting scrap iron
04/26/1995EP0514526B1 Facility for producing molten metal in an electric furnace
04/26/1995CN1101947A Method for recovering Fe-and V-slag from molten Fe containing V