a study on molten steel slag refractory reactions during
Slag/refractory and metal/refractory interactions during
Samples were collected and studied under the SEM and the slag/refractory and steel/refractory interface reactions described. Subsurface tundish lining samples were studied to assess the level of slag coating that occurs during tundish draining4–5.
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Effect of Slag Composition on MgO·Al2O3 Spinel-Type
Based on the experimental results a kinetic analysis was carried out using a calculation model to simulate the reactions between the molten steel slag refractory and inclusions in order to evaluate the effect of the slag composition on inclusions.
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THE STUDY ON THE INTERFACE REACTION
slag and refractory or refractory and molten steel. There is a relative lack of research on the interface character-istics of slag itself. In this paper the melting wetting and reaction be-haviors of different binary slag are studied under differ-ent influencing factors. The basic properties of slag are explored.
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The Spontaneous Emulsification of Entrained Inclusions
Mold slag entrainment during the continuous casting process presents a late stage source of non-metallic inclusions (NMI) with a high likelihood of ending up in the final product. The reaction between the entrained slag phase and surrounding liquid steel in the continuous casting mold affects the inclusion morphology and properties.
Get PriceA Study on the Influence of Steel Slag or Gas on
During the production of steel the oxide inclusion content partly depends on the reaction of the melt with the furnace lining the ladle lining and the pouring system. The refractory material may be eroded by the molten steel and slag as well as corroded through chemical reactions with the slag and molten steel and the deoxidation products.
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Refractory–Slag–Metal–Inclusion Multiphase Reactions
Jun 28 2016 · The refractory–slag–metal–inclusion multiphase reaction model was developed by integrating the refractory–slag slag–metal and metal–inclusion elementary reactions in order to predict the evolution of inclusions during the secondary refining processes.
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Controlling refractory erosion in induction furnaces the
Aug 01 1991 · Generally the byproducts of these reactions (including both stable compounds and glasses resulting from melting alloying and refractory wear) are lumped into the general term "slag." Slag composition is worthy of attention--particularly in operations involving a range of alloy chemistfies--because it can be more difficult to predict than the
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Influence of composition of slag and carbonaceous
Study of slag/char interactions is essential to understand the behaviour of unburnt char within a blast furnace during pulverised coal injection. While slag/carbon reaction kinetics have been reported in the literature limited work is reported on study of the wetting behaviour in these systems.
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Refractory-Slag-Metal-Inclusion Multiphase Reactions
The refractory-slag-metal-inclusion multiphase reaction model was developed by integrating the refractory-slag slag-metal and metal-inclusion elementary reactions in order to predict the evolution of inclusions during the secondary refining processes. The mass transfer coefficient in the metal and slag phase and the mass transfer coefficient of MgO in the slag were employed in the present
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Effect of Slag Composition on MgO·Al2O3 Spinel-Type
Based on the experimental results a kinetic analysis was carried out using a calculation model to simulate the reactions between the molten steel slag refractory and inclusions in order to evaluate the effect of the slag composition on inclusions.
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Effect of Slag Composition on MgO·Al2O3 Spinel-Type
Based on the experimental results a kinetic analysis was carried out using a calculation model to simulate the reactions between the molten steel slag refractory and inclusions in order to evaluate the effect of the slag composition on inclusions.
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Slag-Metal Reactions during Welding Part II. Theory
Slag-Metal Reactions during Welding Part II. Theory U. MITRA and T. W. EAGAR A kinetic model is developed to describe the transfer of alloying elements between the slag and the metal during flux-shielded welding. The model accounts for changes in alloy recovery based on the geometry of the resulting weld bead.
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warwick.ac/lib-publications
ABSTRACT In the current study the wettability between molten slag and dolomitic refractory materials used in the ladle during steel refining was investigated. The contact angle between molten slag and dolomitic substrate decreased with increasing temperature. The slag with lower basicity
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Study on reduction behavior of molybdenum trioxide in
STUDY ON REDUCTION BEHAVIOUR OF MOLYBDENUM TRIOXIDE IN MOLTEN STEEL 463 lower basicity slag contains more SiO 2 which prevents the reaction between MoO 3 and Si Al. More importantly MoO 3 is hard to be combined with CaO for low basicity slag and in that case the volatilization of MoO 3 could result in a lower Mo yield. 3
Get PriceSteelPrimary steelmaking Britannica
SteelSteelPrimary steelmaking In principle steelmaking is a melting purifying and alloying process carried out at approximately 1 600° C (2 900° F) in molten conditions. Various chemical reactions are initiated either in sequence or simultaneously in order to arrive at specified chemical compositions and temperatures. Indeed many of the reactions interfere with one another
Get PriceImpact of slag–refractory lining reactions on the
Nov 29 2013 · Abstract The present study was carried out to investigate the impact of slag– refractory lining reactions on the formation of inclusions during ladle treatment of steel. The experiments were conducted on an industrial scale in the ladle at Uddeholm Tooling AB in Hagfors Sweden.
Get PriceImpact of slag refractory lining reactions on the
The present study was carried out to investigate the impact of slag refractory lining reactions on the formation of inclusions during ladle treatment of steel. The experiments were conducted on an industrial scale in the ladle at Uddeholm Tooling AB in Hagfors Sweden.
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A Study of Molten Slag-metal-refractory Interaction During
A Study on Molten. Steel/Slag/Refractory Reactions during Ladle Steel Refining Sune Jansson Licentiate Thesis. Stockholm 2005 Department of Material Science and Engineering Division of Applied Process Metallurgy Royal Institute of Technology SE-100 44 Stockholm Sweden Akademisk avhandling som med tillstnd av Kungliga Tekniska Hgskolan i Stockholm framlgges fr offentlig granskning fr
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(PDF) Chemical Interactions of Alumina–Carbon Refractories
Chemical Interactions of Alumina–Carbon Refractories with Molten Steel at 1823 K (1550 C) Implications for Refractory Degradation and Steel Quality R. KHANNA M. IKRAM-UL HAQ Y. WANG S. SEETHARAMAN and V. SAHAJWALLA A sessile-drop study was carried out on Al2O3-10 pct C refractory substrates in contact with molten iron to investigate possible chemical reactions in the
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Slag conditioning effects on MgO–C refractory corrosion
Sep 01 2013 · Slag conditioning practice provides important benefits to the steelmaking processes including ladle refractory life improvement lower flux cost/additions better control of
Get PriceA Study on the Influence of Steel Slag or Gas on
4.2. Reaction between MgO-C refractory and molten slag (S2) 40 4.3. Reaction between doloma refractory and molten slag (S3) 43 4.4. Reaction between MgO-C refractory and gas (S4) 47 5. DISCUSSION 50 5.1. The effect of temperature on the dissolution rate 52 5.2. The effect of the revolution speed on the dissolution rate 53 5.3. Formation of
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Treatments and Recycling of Metallurgical Slags IntechOpen
May 07 2018 · Physicochemical properties of slag and molten metal directly affect the surface and interfacial properties in refining process of molten metal . Slag is of great relevance in metallurgy processes for steel quality however during long years it was considered an important waste together with the accumulation of refractories after use.
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Refractory lining of a Basic Oxygen FurnaceIspatGuru
Mar 28 2013 · Refractory lining of a Basic Oxygen Furnace. satyendra March 28 2013 3 Comments charge pad g carbon. converte zones gunning slag coting slag splashing Refractory lining of a Basic Oxygen Furnace. The purpose of a refractory lining in a basic oxygen furnace (BOF) is to provide maximum furnace availability during operation of the converter in order to meet production
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A Study of Molten Slag-metal-refractory Interaction During
A Study on Molten. Steel/Slag/Refractory Reactions during Ladle Steel Refining Sune Jansson Licentiate Thesis. Stockholm 2005 Department of Material Science and Engineering Division of Applied Process Metallurgy Royal Institute of Technology SE-100 44 Stockholm Sweden Akademisk avhandling som med tillstnd av Kungliga Tekniska Hgskolan i Stockholm framlgges fr offentlig granskning fr
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Kinetic study on compositional variations of inclusions
2 Kinetic model. The schematic diagram of the present model is shown in Figure 1.Reactions between the molten steel and the slag as well as that between the molten steel and inclusions the dissolution of MgO refractory into both the molten steel and the slag alloy dissolution into the metal and the reoxidation of the molten steel caused by argon blowing are all considered in the present model.
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(PDF) Chemical Interactions of Alumina–Carbon Refractories
Chemical Interactions of Alumina–Carbon Refractories with Molten Steel at 1823 K (1550 C) Implications for Refractory Degradation and Steel Quality R. KHANNA M. IKRAM-UL HAQ Y. WANG S. SEETHARAMAN and V. SAHAJWALLA A sessile-drop study was carried out on Al2O3-10 pct C refractory substrates in contact with molten iron to investigate possible chemical reactions in the
Get Price
Impact of slag refractory lining reactions on the
The present study was carried out to investigate the impact of slag refractory lining reactions on the formation of inclusions during ladle treatment of steel. The experiments were conducted on an industrial scale in the ladle at Uddeholm Tooling AB in Hagfors Sweden.
Get PriceImpact of slag–refractory lining reactions on the
Nov 29 2013 · Abstract The present study was carried out to investigate the impact of slag– refractory lining reactions on the formation of inclusions during ladle treatment of steel. The experiments were conducted on an industrial scale in the ladle at Uddeholm Tooling AB in Hagfors Sweden.
Get PriceTHE STUDY ON THE INTERFACE REACTION
slag and refractory or refractory and molten steel. There is a relative lack of research on the interface character-istics of slag itself. In this paper the melting wetting and reaction be-haviors of different binary slag are studied under differ-ent influencing factors. The basic properties of slag are explored.
Get Price
