tundish fluxing process
LADLE FURNACE AND SECONDARY METALLURGY TRAINING PREPARED
Jan 17 2010 · However the Key to a correct DeS process (normally reaching a delta ranging from 50 to 80 between the S value during the tapping phase and the final S value of the CCM tundish) is the compliance with the three basic parameters namely • no slag is tapped from the EAF into the Ladle •the value of the free oxygen is lower than 30 ppm
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Patents in Class 164/473
Tundish fluxing process A process for continuously casting steel wherein liquid steel is teemed from a ladle through a shroud into the pour box section of a tundish and poured from the tundish
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(PDF) Study of the Deskulling Problem of Tundishes in
Attack of refractories in tundish linings is a complex phenomenon which depending on the particular system involves chemical wear (corrosion) and physical or mechanical wear (erosion) processes which may interact synergistically. In this case Al 2 O 3 as a fluxing component will enhance slag fluidity and thus the penetration potential
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Steel makingSlideShare
Such a process is called basic steelmaking process. The furnace lining in this case has to be basic in nature. 16. In brief the composition of pig iron is the only factor that determines the acid or the basic character of the process to be adopted for steelmaking.
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Tundish flux powderThe Clay Harden Company
I claim 1. In the process of continuous casting of steel wherein the steel is teemed into a tundish from which it is poured into a continuous casting mold the improvement comprising the step of during the teeming operation providing a tundish flux powder on the surface of the molten metal in the tundish consisting essentially of in weight percent
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On the Cause and Prevention of Tundish Nozzle Clogging
Jun 01 2006 · The formation of accretions or clogging of tundish nozzles in the continuous casting of steel is detrimental both to caster productivity and to eventual inclusion content of the final product. The cause of the clogging is related to a combination of operating criteria including ladle slag practice tundish refractory deoxidation methodology and temperature. To assess the effect of various
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Metal Powder Manufacturing Modern Techniques
The process is now widely used for Ti alloy production but suffers from the fact that the stream s location is poorly defined and the melt rate rather slow typically 10–30 kg h –1. This leads to very high (argon) gas consumption per kilogram of powder and also to a relatively coarse distribution (median 40–100 micron) so yields of
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LADLE FURNACE AND SECONDARY METALLURGY TRAINING PREPARED
Jan 17 2010 · However the Key to a correct DeS process (normally reaching a delta ranging from 50 to 80 between the S value during the tapping phase and the final S value of the CCM tundish) is the compliance with the three basic parameters namely • no slag is tapped from the EAF into the Ladle •the value of the free oxygen is lower than 30 ppm
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Criteria for Furnace or Kiln Design and Selection of
Process Details of process to be adopted. Will the refractory material come in direct contact with slag metal dust fluxing agent gas or flame Which part of the furnace or kiln will be subjected to the destructive actions of the above elements etc.
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The Chemical Wear Of The Sen-Slagline In The Continuous Casting Of Stainless Steels. The Continuous Charge Of Hot Metal And Preheated Scrap In The Electric Arc EAF With The Consteel Process. The Operation And Maintenance Of A Continuous Tundish Temperature System. Thermodynamic Modeling For Deoxidation Control Of Steel In LMF.
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Properties and Uses of Steelmaking SlagIspatGuru
Nov 14 2018 · Steelmaking slag contains around 10 of scrap which comes from the refining process or from some of the processing vessel (e.g. BOF EAF steel teeming ladle or tundish). It is advantageous to separate this scrap from the slag for the purpose of recycling the recovered scrap in the primary steelmaking process for making the slag free from
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On the Cause and Prevention of Tundish Nozzle Clogging
The plant scale trials were successful with regard to sulphur and hydrogen levels and cleanliness of the final product and presented no process problems such as slag foaming or tundish clogging.
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Metallurgical and Materials Transactions B Volume 47
Microbubble Swarms in a Full-Scale Water Model Tundish. Authors (first second and last of 5) Sheng Chang. Xiangkun Cao. Roderick I. L. Guthrie. Content type OriginalPaper. Published 09 August 2016. Pages .
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USB1Basic tundish flux composition for
The tundish flux composition of the invention employs solid recycled ladle metallurgy furnace (LMF) slag as a fluidizing and refining base ingredient in a mixture of raw materials. The preferred recycled LMF slag material comprises about 35 to about 65 CaO about 10 to about 35 Al 2 O 3 about 1 to about 10 SiO 2 about 3 to about 15 MgO about 0.3 to about 10 FeO about 0.1 to
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Evaluation of the protective C2S layer in the corrosion
Apr 01 2015 · Dicalcium silicate (C 2 S layer) samples from a ladle in normal process conditions after a significant number of runs (so-called STD samples) were used in this work. The samples were obtained from a steelmaking machine a mini-mill that produces long carbon steels mainly for civil construction and uses a doloma-C ladle lining (the composition of the slag before and after deoxidation with
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Casting Machinean overview ScienceDirect Topics
J.F. Grandfield in Fundamentals of Aluminium Metallurgy 2011 5.9 Chain conveyor casting. Chain conveyor casting machines are used to produce over 10 million tonnes per annum of aluminium ingots. A typical primary smelter machine configuration is a machine capable of 20–25 tonnes per hour production rate of 22–23 kg trapezoid ingots with an annual capacity of over 100 000 tpa.
Get Price(PDF) Study of the Deskulling Problem of Tundishes in
Attack of refractories in tundish linings is a complex phenomenon which depending on the particular system involves chemical wear (corrosion) and physical or mechanical wear (erosion) processes which may interact synergistically. In this case Al 2 O 3 as a fluxing component will enhance slag fluidity and thus the penetration potential
Get Price
(PDF) Study of the Deskulling Problem of Tundishes in
This paper reports an investigation carried out on the deskulling problem of tundishes at the Mobarakeh Steel Plant in Iran. Bad deskulling of tundishes is a major problem in continuous casting of
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INCLUSIONS IN CONTINUOUS CASTING OF STEEL
inclusion distributions and methods to detect inclusions in this process.22) Zhang and Thomas (2003) reviewed detection methods of inclusions and operating practices to improve steel cleanliness at the ladle tundish and continuous caster. 12) The rest of this report is an extensive review on inclusions in
Get PriceWater Atomization Process Part Two Total Materia Article
The water-atomizing process as practiced there can be followed on the flow-sheet shown in Figure 2 and is described in detail on the next page. Figure 2 Flow-sheet for the Höganäs Water-Atomizing Process. The raw material for this process is a carefully selected iron scrap and sponge iron from the process described in the preceding paragraph.
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Analyze complex phases of slag–tundish plaster reactions
Jan 21 2008 · The tundish represents the inextricable link between the batch of steelmaking melt and the continuous casting process. Typically tundish linings are composed of permanent and expendable layers. The expendable lining or plaster is a high-MgO content material and is exposed directly to the steel melt ( Birat et al. 2003 McLean 1998
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Tundish fluxing processNational Steel Corporation
Tundish fluxing process . United States Patent . Abstract A process for continuously casting steel wherein liquid steel is teemed from a ladle through a shroud into the pour box section of a tundish and poured from the tundish through one or more outlets remote from the pour box and wherein the surface of the steel in the tundish is
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Inside Gary Works. Making steel. From taconite pellets to
The process removes the impurities from the coal leaving almost pure scrap and other "fluxing" materials are. ladles that pour the molten iron into a "tundish." This large tub is connected
Get PriceAnalyze complex phases of slag–tundish plaster reactions
Jan 21 2008 · The tundish represents the inextricable link between the batch of steelmaking melt and the continuous casting process. Typically tundish linings are composed of permanent and expendable layers. The expendable lining or plaster is a high-MgO content material and is exposed directly to the steel melt ( Birat et al. 2003 McLean 1998
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Scunthorpe SteelworksWikipedia
Scunthorpe Steelworks. / 53.581944 -0.607860 ( Scunthorpe Steelworks) The Iron and Steel Industry in Scunthorpe was established in the mid 19th century following the discovery and exploitation of middle Lias ironstone east of Scunthorpe Lincolnshire England. Initially iron ore was exported to iron producers in South Yorkshire.
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Inside Gary Works. Making steel. From taconite pellets to
The process removes the impurities from the coal leaving almost pure scrap and other "fluxing" materials are. ladles that pour the molten iron into a "tundish." This large tub is connected
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Developing Two New Tundish Plasters and Comparing with
The fluxing composition is both insulating and basic and performs the following three vital functions as it covers the liquid metal in a tundish 1. Thermal insulation of the liquid steel. 2.
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Tundish flux powderThe Clay Harden Company
I claim 1. In the process of continuous casting of steel wherein the steel is teemed into a tundish from which it is poured into a continuous casting mold the improvement comprising the step of during the teeming operation providing a tundish flux powder on the surface of the molten metal in the tundish consisting essentially of in weight percent
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Process metallurgy for ladle-tundish-mould operations Ladle and Tundish Metallurgy 41st Annual Conference of Metallurgists of CIM (COM 2002) Prefabricated "self-fluxing" lime was tested
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