| Patents for C21C 7 - Treating molten ferrous alloys, e.g. steel, not covered by groups (11,430) |
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| 11/11/2009 | CN201343550Y Alloy feeding buffer structure |
| 11/11/2009 | CN201343549Y Stationary multifunctional top lance sealing protection device for molten steel vacuum refining |
| 11/11/2009 | CN100558912C Device for mixing saturated steam and superheated steam used for vacuum refining furnace |
| 11/11/2009 | CN100558911C Blowing refining apparatus |
| 11/10/2009 | US7615099 Method for producing high cleanness steel excellent in fatigue strength or cold workability |
| 11/05/2009 | US20090274608 treating molten calcium-silicate based slag with a molten ferrosilicon alloy; the phosphorous in the slag is transferred to the ferrosilicon alloy; removing a calcium-silicate based slag containing less than 3 ppmw phosphorous; for solar cells |
| 11/03/2009 | US7611665 Ladle bottom |
| 11/03/2009 | US7611663 Industrial furnace and associated jet element |
| 10/29/2009 | WO2009131428A1 Alloy "kazakhstanski" for reducing and doping steel |
| 10/29/2009 | WO2009130428A2 Flux-cored wire including molybdenum trioxide |
| 10/29/2009 | CA2722047A1 Alloy "kazakhstanskiy" for reducing and doping steel |
| 10/28/2009 | CN101565801A High-carbon-chromium bearing steel and manufacture method thereof |
| 10/28/2009 | CN101565796A Sheet steel with tensile strength of 570Mpa for elbow pipe and production method thereof |
| 10/28/2009 | CN101565792A Method for smelting boron steel |
| 10/28/2009 | CN101565771A Calcium treatment method for molten steel in steel making |
| 10/28/2009 | CN101565770A Fluorite powder pressing block and preparation method thereof |
| 10/28/2009 | CN101564806A Production process for OOCr13Si2MoAl soft-magnetic chromium stainless alloy material special for welding |
| 10/28/2009 | CN100554482C New type roller made from hard material suitable to tandem mill for bars and wire rods, and manufacturing method |
| 10/27/2009 | US7608130 Alloy contrining lithium, silicon and iron |
| 10/21/2009 | CN101563476A Steel plate for producing light structures and method for producing said plate |
| 10/21/2009 | CN101560635A Technical method for producing heat-resisting alloy steel casting below 1100 DEG C |
| 10/21/2009 | CN101560633A Technical method for producing heat-resisting alloy steel casting below 1000 DEG C |
| 10/21/2009 | CN101560586A Compound dephosphorization agent with converter slag as raw material and preparing method thereof |
| 10/21/2009 | CN101560585A Method for producing desulphurization powder gun with long service life by using recovered waste silicon carbide |
| 10/21/2009 | CN101560584A Special slag-sticking device for pretreating hot metal and slag-sticking technology thereof |
| 10/21/2009 | CN101560583A Rotary furnace cooling agent made of metallurgical waste material product and using method thereof |
| 10/21/2009 | CN101560582A Rotary furnace cooling agent made of metallurgical waste material product and using method thereof |
| 10/21/2009 | CN101560581A Rotary furnace cooling agent and manufacturing method thereof |
| 10/21/2009 | CN100552053C Method for producing fine oxide dispersion steel |
| 10/21/2009 | CN100552052C Technique for preparing fine oxide dispersion steel |
| 10/21/2009 | CN100552051C Grain refining method for ultra-supercritical steel |
| 10/21/2009 | CN100552050C Two-thread vertical thread feeding device |
| 10/14/2009 | CN201325976Y KR stirrer with improved structure |
| 10/14/2009 | CN101558171A Method and installation for introducing a cored wire into a bath of molten metal |
| 10/14/2009 | CN101555540A Energy conservation production method for compound temperature reduction agent used in the steel production |
| 10/14/2009 | CN101555539A Al-Ca-Fe complex deoxidizer and preparation method thereof |
| 10/14/2009 | CN101555538A Production technique for smelting low-manganese pig iron |
| 10/14/2009 | CN101555537A Semi-steel steelmaking method |
| 10/14/2009 | CN100549188C Standby preheating device and method for molten steel refining vacuum channel |
| 10/14/2009 | CN100549187C Aluminium deoxidized steel refining desulfuration method |
| 10/08/2009 | WO2009123272A1 Steel-making method for titanium-containing ultralow carbon steel and method for manufacturing titanium-containing ultralow carbon steel slab |
| 10/07/2009 | CN201321470Y Composite sealing ring for sealing RH vacuum chamber |
| 10/07/2009 | CN101553588A Silicon-killed steel wire material and spring |
| 10/07/2009 | CN101553587A Si killed steel wire material having excellent fatigue property and spring |
| 10/07/2009 | CN101553583A Process for producing extra-low-sulfur low-nitrogen high-cleanliness steel through melting |
| 10/07/2009 | CN101550516A Method for revolving furnace smelting 45CrMnMo steel |
| 10/07/2009 | CN101550513A A method for fast and deep desulfurization of low-carbon aluminum-killed steel |
| 10/07/2009 | CN101550475A Method for producing ultra-low-carbon steel |
| 10/07/2009 | CN101550474A Reducing boron slag system for producing high-purity silicon iron |
| 10/07/2009 | CN101550473A Method for controlling nitrogen content in N80 steel |
| 10/07/2009 | CN101550472A Decreasing carbon method for producing high-purity silicon iron |
| 10/07/2009 | CN101550471A Method utilizing nonferrous metal production waste to prepare calcium aluminate used for metallurgy |
| 10/07/2009 | CN101550470A Low-aluminum silicon-barium-calcium alloy and production process thereof |
| 10/07/2009 | CN101550469A Operating method for using low- or mediate-silico-manganese ferroalloy in process of temperature-adjusting deoxidation alloying for steel-making |
| 10/07/2009 | CN101550468A Metal smelting device driven by gravitational potential energy and method thereof |
| 10/07/2009 | CN101549364A Method of using hot tandem rolling broad strip mill to produce steel plate for ship hull structure use |
| 10/07/2009 | CN101549353A Method for producing low-alloy and large-size square steel by continuously casting and continuously rolling |
| 10/07/2009 | CN100547087C Calcium-calcium aluminate core-spun yarn for steel smelting |
| 10/07/2009 | CN100547086C Blowing powder for molten steel secondary refining and preparation method and methods for using same |
| 10/07/2009 | CN100547085C Molten steel composite purifying agent for secondary refining and preparing method |
| 10/06/2009 | US7597741 Method of making steel |
| 10/06/2009 | US7597737 Method for producing steel ingot |
| 10/06/2009 | US7597736 Method for utilizing slag |
| 10/06/2009 | CA2324782C A direct smelting apparatus and process |
| 10/01/2009 | DE112007002628T5 Elektromagnetische Rührvorrichtung Electromagnetic stirrer |
| 09/30/2009 | CN201317792Y Lining structure suitable for RH submerged tube with large circulation volume |
| 09/30/2009 | CN201317791Y U-shaped backing ring |
| 09/30/2009 | CN201317790Y Dispenser for producing stainless steel containing yttrium and adding metallic calcium and yttrium master alloy |
| 09/30/2009 | CN101545067A Method for producing pipe line steel J55 by RH refining technology |
| 09/30/2009 | CN101545066A Method for smelting H2S corrosion resistant petroleum casing pipe steel 110S |
| 09/30/2009 | CN101545028A Multifunctional vacuum refining process |
| 09/30/2009 | CN101545027A Low-carbon quick melting ladle refining slag |
| 09/30/2009 | CN101544505A Nano Al2O3 and MgO composite ceramic bonded spinel-magnesia fireproof casting material and preparation method thereof |
| 09/30/2009 | CN101543838A Method for manufacturing steel wire rod for pipe line steel submerged arc welding wire |
| 09/30/2009 | CN100545268C Multifunctional composite refining agent for steel-smelting |
| 09/29/2009 | US7594948 Covering means for a top slag, method for the production thereof and use of the covering means |
| 09/24/2009 | WO2009116684A1 Method of processing slag |
| 09/24/2009 | WO2009115722A1 Novel additive for treating resulphurized steel |
| 09/23/2009 | CN201313921Y Nitrogen gas supply device |
| 09/23/2009 | CN101541982A A ferro-alloy inserting apparatus with reduced absorption of oxygen and absorption of nitrogen and inserting method thereof |
| 09/23/2009 | CN101538641A RH bottom blowing argon vacuum circulating degasser |
| 09/23/2009 | CN101538640A Method for producing tough high chromium ferritic alloy |
| 09/23/2009 | CN101538639A Apparatus for refining molten iron containing chromium |
| 09/23/2009 | CN101538638A Refining method of reducing slag made by CAS refining furnace for desulfurization |
| 09/23/2009 | CN101538637A Molten iron demanganizing agent for silicon steel and manufacturing method thereof |
| 09/23/2009 | CN101538636A Ladle furnace use nitrogen gas nitrogen alloying process |
| 09/23/2009 | CN101538634A Smelting process and device of pure iron |
| 09/23/2009 | CN101538623A Process for manufacturing T/P91.92 fine-grained heat-resistant steel pipe |
| 09/23/2009 | CN100543153C Composite sphere for outside-stove refining desulfurization, removing fine foreign matter and its manufacturing method |
| 09/23/2009 | CN100543152C Technological process for removing fine occluded foreign substance in molten steel |
| 09/22/2009 | US7591876 Injection of solids into liquids by means of a shrouded supersonic gas jet |
| 09/17/2009 | WO2009113871A1 Device for adding fluid to a liquid |
| 09/17/2009 | CA2718004A1 Device for adding fluid to a liquid |
| 09/16/2009 | EP2100975A1 Method and device for treating a molten metal for producing metal castings |
| 09/16/2009 | EP2099940A1 Method of regulating the output of carbon monoxide in a metallurgical melting process |
| 09/16/2009 | CN101535508A Process for producing ingot of ultralow-sulfur high-cleanliness steel |
| 09/16/2009 | CN101535507A System for optically analyzing a molten metal bath |
| 09/16/2009 | CN101532113A Anti-collapse oil casing and manufacturing method thereof |
| 09/16/2009 | CN101532074A A blowing method desulfurizing agent and preparation method thereof |
| 09/16/2009 | CN101532073A A desulfurizing process |