| 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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| 04/22/2009 | CN201224738Y Big cone oxygen lance special for steel smelting |
| 04/22/2009 | CN101413091A Novel easy-to-cut stainless steel 303B and manufacturing method thereof |
| 04/22/2009 | CN101413088A Sulfurated hydrogen stress etching-resisting petroleum casing pipe and manufacturing method thereof |
| 04/22/2009 | CN101413046A Homogeneous slag bridge for converter tapping |
| 04/22/2009 | CN101413045A Technology for processing and recycling refining converter flue gas |
| 04/22/2009 | CN101413044A Alloy addition method for improving yield of ferromolybdenum |
| 04/22/2009 | CN101413043A Steel-smelting regulator and preparation thereof |
| 04/22/2009 | CN101413042A Slag-forming constituent and preparation thereof |
| 04/22/2009 | CN101412183A Method for producing high-carbon chromium bearing steel by double retarded cooling process |
| 04/21/2009 | CA2555472C Method for producing low carbon steel |
| 04/16/2009 | WO2009047927A1 Arc furnace steelmaking process using palm shell charcoal |
| 04/15/2009 | EP2047001A1 Oxygen injection method |
| 04/15/2009 | CN201221898Y Electric stove vertical shaft locking apparatus |
| 04/15/2009 | CN201220951Y Electric furnace tilting hydraulic cylinder connecting support |
| 04/15/2009 | CN201220950Y Drilling equipment for changing converter bottom blowing gas-feeding brick |
| 04/15/2009 | CN201220949Y Chain type elevating gear for movable fume hood |
| 04/15/2009 | CN101410538A Method for recycling steelmaking dust |
| 04/15/2009 | CN101408379A Apparatus for injecting gas into a vessel |
| 04/15/2009 | CN101407891A Boron-containing semi-high speed steel cold roller and manufacturing method thereof |
| 04/15/2009 | CN101407859A Use of carbonaceous composite pellet containing manganese in electric furnace smelting |
| 04/15/2009 | CN101407852A Method for extracting vanadium slag from ultra-low vanadium-containing molten iron by using converter |
| 04/15/2009 | CN101407019A Process for manufacturing corrosion resistant low-chromium tubing and casing in CO2 and H2S coexisted environment |
| 04/15/2009 | CN100478636C Mounting arrangement for auxiliary burner or lance |
| 04/15/2009 | CN100478124C Technique for producing 55CrSi bull rod steel |
| 04/09/2009 | WO2006127037A3 Atmospheric pressure processing using microwave-generated plasmas |
| 04/08/2009 | EP2045552A2 Device for use in temperatures above 1000° C or in steel smelting and use thereof |
| 04/08/2009 | CN201217668Y Semi-mounted traction wheeled revolving furnace material groove hook connecting base |
| 04/08/2009 | CN201217667Y Slag blocking wimble for steel-smelting |
| 04/08/2009 | CN201217666Y Movable platform for examination and repair of revolving furnace |
| 04/08/2009 | CN101405414A A forehearth |
| 04/08/2009 | CN101403077A Biphase stainless steel and method for making same |
| 04/08/2009 | CN101403073A Self-generating carbide particle reinforced ferrite heat-resistant steel and method of producing the same |
| 04/08/2009 | CN101403071A High-alloy hot work steel and producing method thereof |
| 04/08/2009 | CN101403021A Utilization method for steel scoria |
| 04/08/2009 | CN100476335C Method and apparatus for preventing ash in treating molten metal |
| 04/08/2009 | CN100476006C Smelting process of SPHD level cold rolled deep-drawing steel |
| 04/08/2009 | CN100475979C Method for smelting suprelow carbon steel using ordinary arc furnace |
| 04/08/2009 | CN100475978C Furnace type structure of heating furnace |
| 04/07/2009 | US7514034 Container capable of transporting molten metal received therein to separate factory and method of producing the container |
| 04/07/2009 | CA2538618C Industrial furnace and associated jet element |
| 04/02/2009 | DE102007044126A1 Feuerfester keramischer Lochstein Refractory ceramic nozzle brick |
| 04/01/2009 | EP2042253A1 Coating for fire-resistant masses |
| 04/01/2009 | CN201214670Y Sublance probe conveyer device |
| 04/01/2009 | CN201214669Y Cross sliding type sublance system |
| 04/01/2009 | CN201214668Y Rotary sublance body |
| 04/01/2009 | CN201214667Y Spray cooling wet-type electric precipitation tower |
| 03/31/2009 | US7510679 Taphole cooling structure |
| 03/26/2009 | WO2009038139A1 Process for producing molten iron |
| 03/26/2009 | CA2698888A1 Method for manufacturing molten iron |
| 03/25/2009 | EP2038434A1 Direct smelting vessel and cooler therefor |
| 03/25/2009 | CN201212045Y Anti-falling mechanism for sublance body |
| 03/25/2009 | CN201212044Y Water cooling oil cylinder for steel converter slag stopping gate valve |
| 03/25/2009 | CN201212043Y Anti-rotary device |
| 03/25/2009 | CN201212042Y Converter auxiliary lance safety protector |
| 03/25/2009 | CN101392307A Environmental friendly energy-saving electric furnace direct steel-making method and device thereof |
| 03/25/2009 | CN101392306A Method for producing outgassing head guiding dispersion through gas |
| 03/25/2009 | CN101392305A Automatic control technology complete set of plant of tap hole gate valve steel slag-blocking system |
| 03/25/2009 | CN101392303A Recovery and utilization method of useful element in free-cutting steel refining slag |
| 03/25/2009 | CN100471960C Method and apparatus for supplying solid feed materials for a direct smelting process |
| 03/24/2009 | US7507366 Container, storing bath and a method of producing the container |
| 03/19/2009 | WO2009034586A1 Injector for arc furnace |
| 03/18/2009 | CN201209152Y Auxiliary lance elastic guide trolley |
| 03/18/2009 | CN201209151Y Anti-falling mechanism for auxiliary lance trolley |
| 03/18/2009 | CN201209150Y Auxiliary lance for converter |
| 03/18/2009 | CN201209149Y Four-point suspended type converter connection device |
| 03/18/2009 | CN201209148Y Primary fan rotor automatic ash cleaner for converter |
| 03/18/2009 | CN201209147Y Duplex steel-smelting apparatus for converter |
| 03/18/2009 | CN101389772A Method of producing steel for high carbon steel wire material excellent in wire-drawability and fatigue characteristic |
| 03/18/2009 | CN101389771A Method of dephosphorization of molten iron |
| 03/18/2009 | CN101386958A Steel for high speed rail non-slag concrete slab sleeper steel wire and producing method thereof |
| 03/18/2009 | CN101386899A Vanadium extraction smelting process for rotating furnace and apparatus |
| 03/18/2009 | CN101386895A Recovery and utilization method of powdery ferroalloy and iron-containing raw material |
| 03/18/2009 | CN100470200C Guide system for signal lines, device for measuring temperatures and/or concentrations, and use thereof |
| 03/18/2009 | CN100469899C Tuyere device for introducing gaseous media under a liquid-metal layer |
| 03/18/2009 | CN100469898C Alkaline oxygen converter steelmaking slagging fluxing agent and its preparing method and slagging method |
| 03/17/2009 | US7504065 Direct smelting plant and process |
| 03/17/2009 | CA2332153C A method of relining a vessel |
| 03/12/2009 | WO2009030192A1 Indirect determination of the waste gas rate for metallurgical processes |
| 03/12/2009 | DE102007044568A1 Indirekte Bestimmung der Abgasrate bei metallurgischen Prozessen Indirect Determination of the emission rate in metallurgical processes |
| 03/12/2009 | CA2698398A1 Indirect determination of the waste gas rate for metallurgical processes |
| 03/11/2009 | CN101384735A Method of denitrifying molten steel |
| 03/11/2009 | CN101381844A Cold working die steel material and production technology thereof |
| 03/11/2009 | CN101381790A Method for horizontal continuous casting 10Cr9Mo1VNbN ferrite heat-resistant steel to tube round blank through electric stove smelting |
| 03/11/2009 | CN101381789A Slag-removing device for tapping of converter |
| 03/11/2009 | CN101381788A Fireproof brick with equal terminal difference for large converter ladle inner wall and masonry method thereof |
| 03/11/2009 | CN101381787A Smelting method of high-alloy steel |
| 03/10/2009 | US7502667 Method of operating a production plant and production plant |
| 03/05/2009 | WO2009028924A1 Ionising compound serving as an electric arc stabiliser |
| 03/04/2009 | CN201202914Y Drilled shaft cap drag chain water pipe connecting structure |
| 03/04/2009 | CN201201955Y Slag scraper for oxygen lance for converter |
| 03/04/2009 | CN201201954Y Nitrogen seal apparatus preventing flue gas from overflow |
| 03/04/2009 | CN101379201A Method for the production of a foamed slag in a metal bath |
| 03/04/2009 | CN101376915A Method for smelting high-alumina non-magnetic steel |
| 03/04/2009 | CN100465291C A production technology of low carbon low silicon aluminum killed steels |
| 03/03/2009 | US7497987 Refining method and refining apparatus for chromium-contained molten steel |
| 02/25/2009 | EP1920076B1 Tiltable metallurgical vessel |
| 02/25/2009 | CN201198487Y Converter oxygen lance |
| 02/25/2009 | CN101372720A High vacuum induction furnace steel-smelting carburetion method |
| 02/25/2009 | CN101372719A Noncoking steel smelting method |
| 02/25/2009 | CN100463976C Processing method of top-bottom blowing converter for maintaining converter mouth and removing cohered steel slag |