Corrosion of spinel clinker by CaO–Al2O3–SiO2 ladle slag
Corrosion of spinel clinker by CaO–Al 2 O 3 –SiO 2 ladle slag. Author links open overlay panel Mun-Kyu Cho Gi-Gon Hong Seok-Keun Lee. Show more
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Dissolution in Ceramic Systems I Molecular Diffusion
Young‐Joon Park Yong‐Min Cho Woo‐Yeol Cha Youn‐Bae Kang Dissolution kinetics of alumina in molten CaO–Al2O3–FeO–MgO–SiO2 oxide representing the RH slag in steelmaking process Journal of the American Ceramic Society 10.1111/jace.16879 103 3 () (2019).
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Alumina Magnesia Refractory CastablesRS Kiln Refractory
It has good corrosion resistance and slag penetration resistance and can be used as a large ladle lining for continuous casting. Alumina-magnesia spinel castable The alumina-magnesia spinel castable is mainly made of corundum super bauxite clinker fused or high-purity magnesia and alumina-magnesia spinel etc. and is configured with low
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Slag Corrosion and Penetration Behaviors of MgAl 2 O 4 and
The slag corrosion and penetration behaviors of MgAl2O4 MgAl2O4–ZrO2 MgAl2O4–ZrO2–CaO Al2O3 and Al2O3–ZrO2–SiC refractories were investigated using the static crucible method at 1873 K for 2 h. The above refractories all displayed excellent slag corrosion resistance and their corrosion depth was less than 1.10 mm. Al2O3 material was hardly corroded by the molten slag and its
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Discussion on the Problems of Aluminum Magnesium Castables
Nov 28 2020 · The expansion caused by the reaction of iron oxide Al2O3 to FeO·Al2O3 in the slag is not large. CaO in the slag reacts with Al2O3 resulting in greater expansion. However the CaO and SiO2 in the slag react with Al2O3 to produce mayelite and/or anorthite. This depends on the SiO2 content in the slag and so on.
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Magnesia Dolomite BricksRS Kiln Refractory Bricks
Free CaO Fe2O3 SiO2 and Al2O3 are harmful impurity as they can affect slag resistance and high temperature performance of magnesia dolomite bricks. Magnesia Dolomite Bricks Property. Low porosity high density. Basic slag corrosion resistance and cement clinker corrosion resistance. High refractoriness lowest eutectic point temperature is
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Dissolution in Ceramic Systems III Boundary Layer
Jun Seok Park Da Hye Kim Joo Hyun Park Thermodynamic Stability of Spinel Phase at the Interface Between Alumina Refractory and CaO–CaF2–SiO2–Al2O3–MgO–MnO Slags Journal of the American Ceramic Society 10.1111/jace.13570 98 6 () (2015).
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Corrosion mechanism and kinetic behaviour of refractory
During the ladle refining of steel the corrosion of the refractory is a very complex process and depends on many factors. Corrosion of the lining material in contact with slag At higher slag basicity the CaO in the slag more quickly attacks spinel- and MgO-chromite bindings in a chrome-magnesia refractory than MgO-MgO bindings in a
Get PriceSlag Corrosion and Penetration Behaviors of MgAl 2 O 4 and
The slag corrosion and penetration behaviors of MgAl2O4 MgAl2O4–ZrO2 MgAl2O4–ZrO2–CaO Al2O3 and Al2O3–ZrO2–SiC refractories were investigated using the static crucible method at 1873 K for 2 h. The above refractories all displayed excellent slag corrosion resistance and their corrosion depth was less than 1.10 mm. Al2O3 material was hardly corroded by the molten slag and its
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Corrosion mechanism and kinetic behaviour of refractory
During the ladle refining of steel the corrosion of the refractory is a very complex process and depends on many factors. Corrosion of the lining material in contact with slag At higher slag basicity the CaO in the slag more quickly attacks spinel- and MgO-chromite bindings in a chrome-magnesia refractory than MgO-MgO bindings in a
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Interaction between MgO–C-bricks and ladle slag with a 1 1
The slag samples were prepared using industrial ladle slag formers a CaO- and Al 2 O 3holder and pure SiO 2.Three different slags with SiO 2 content of 1 10 and 20 mass (Si1 Si10 and Si20 respectively) were mixed and pre-melted in a molybdenum crucible. The chemical analysis of the slag samples was performed using X-ray fluorescence spectrometry (XRF Bruker AXS S8 Tiger Bruker
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Dissolution in Ceramic Systems III Boundary Layer
Jun Seok Park Da Hye Kim Joo Hyun Park Thermodynamic Stability of Spinel Phase at the Interface Between Alumina Refractory and CaO–CaF2–SiO2–Al2O3–MgO–MnO Slags Journal of the American Ceramic Society 10.1111/jace.13570 98 6 () (2015).
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Calcium Aluminate Cementdt-ref
and CaO improve the castable performance it is a great kind of cement. Normal calcium aluminate cement is made by bauxite in rotary kiln. Its CA content is around 60 and 20 CA2 a little C12A7. Our Decar 90 is made of alumina powder in electric arc furnace. We use special procedures to control production time and mineral composition.
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Key features of alumina/magnesia/graphite refractories for
The corrosion resistance of resin bonded alumina/magnesia/graphite refractories containing di•erent kinds of aggregates were investigated when submitted to the action of slags of several CaO/SiO2 ratios. The laboratory testing was performed by means of the rotary slag attack test.
Get PriceCorrosion mechanisms of Al2O3/MgAl2O4 by V2O5 NiO
Dec 01 2011 · The results of the present investigation show the corrosion mechanisms of Al 2 O 3 and MgAl 2 O 4 spinel by Fe 2 O 3 V 2 O 5 NiO or vanadium slag. These mechanisms can be summarized as follows (a) In the Al 2 O 3 –Fe 2 O 3 and Al 2 O 3 –V 2
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Dynamic wetting of CaO-Al2O3-SiO2-MgO liquid oxide on
Dynamic wetting of CaO-Al2O3-SiO2-MgO liquid oxide on MgAl2O4 spinel . Abstract . Inclusion type and content in steel is critical in steelmaking affecting both productivity through clogging and downstream physical properties of the steel. They are normally removed from steel by reacting with a slag (liquid oxide) phase.
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Dynamic wetting of CaO-Al2O3-SiO2-MgO liquid oxide on
Dynamic wetting of CaO-Al2O3-SiO2-MgO liquid oxide on MgAl2O4 spinel . Abstract . Inclusion type and content in steel is critical in steelmaking affecting both productivity through clogging and downstream physical properties of the steel. They are normally removed from steel by reacting with a slag (liquid oxide) phase.
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How to Control Kiln Shell Corrosion Report
Jun 21 2012 · CaO (C) Al2O3 (A) SiO2 (S) Fe2O3 (F) reactin various parts of the kiln to produce C3A (10 ) C4AF (10 ) C2S (30 ) C3S (50 ). Thismixture is called as clinker. Clinker formed above is cooled with the help of the air in Gratecoolers and then stored in clinker silos.The key component of the gas-suspension pre-heater is the cyclone.
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Effect of CaO–MgO–SiO2–Al2O3–TiO2–CaF2 Slag Composition on
tent in slag S2 was more reasonable than other slags. 4. Conclusions In this work the effect of CaO–MgO–SiO 2–Al 2O 3–TiO 2– CaF 2 slag composition on the evolution of inclusions in Al-killed Ti-stabilized 20Cr stainless steel was investigated by slag/metal reaction at 1873 K. Based on the experi -
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Non-Metallic Inclusions in SteelsSpinel Inclusions
CaO-Al2O3-SiO2-MgO liquid oxide on MgAl2O4 spinel CaO·2Al2O3 MgO CaO·6Al2O3 MgO inclusions in 22GYu 10G2FB 09GSF steels In-situ observation of the formation of MA spinel grains in CaO-SiO2-Al2O3 slag Non-metallic inclusions in 1.4016 steel during ladle treatment
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Effect of varying Al2O3 contents of CaO–Al2O3–SiO2 slags
Apr 01 2020 · With CaO–SiO 2 –Al 2 O 3 slags in particular some studies reported a delayed MgO particle dissolution rate because of a MgAl 2 O 4 spinel reaction layer
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Characteristics of Interface between MgAl2O4 Spinel and
Spinel and CaO-Al2O3-SiO2-MgO Slag H Abdeyazdan University of Wollongong ha984 uowmail.edu.au M A. Rhamdhani Swinburne University N Dogan University of Wollongong ndogan uow.edu.au M Chapman B J. Monaghan University of Wollongong monaghan uow.edu.au Research Online is the open access institutional repository for the University of Wollongong.
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Influence of light-burned spinel on the slag resistance of
The slag resistance of Al2O3–spinel Al2O3–MgO and high-Al2O3 castables was tested using a gas-fired rotary slag test furnace and BOF slag (CaO/SiO2=3.8 Fe2O3=33.4 wt. ). The spinels used in
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Corrosion mechanism and kinetic behaviour of MgO–C
Oct 17 2005 · The rate of dissolution of solid MgO–C into liquid CaO–Al 2 O 3 –SiO 2 –MgO slag at different temperatures was studied under conditions of forced convection by rotating cylindrical refractory specimens in a stationary crucible containing molten slag. The corrosion rate was calculated from the change in diameter of the cylindrical refractory specimens.
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Corrosión Por Alcalis Corrosion Aluminium Oxide
Corrosion and Erosion by Molten Coal Slag and/or Iron • dense high-chromia content refractories superior corrosion resistance to CaO/SiO2 = 0.2-1.7 • high-iron oxide acidic coal slag at 1575 chrome-spinel (MgCr2O4) low solubility of Cr2O3 and MgCr2O4 in SiO2-Al2O3-CaO liquids • refractories containing > 30 Cr2O3
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Corrosion of spinel clinker by CaO–Al2O3–SiO2 ladle slag
Oct 01 2002 · Based on three kinds of spinel clinkers containing 47 69 and 94 wt. Al 2 O 3 the corrosion mechanism of each spinel clinker by a CaO–Al 2 O 3 –SiO 2 ladle slag was investigated and the corrosion and penetration behavior of castables containing each spinel clinker in fine parts were examined. 1.
Get PriceStudy of Al2O3 MgO Refractory Castables Corrosion by
Optimization of Slag Corrosion Resistance and Thermal Expansion in Al2O3-MgO-C Bricks. Chatterjee S. / Eswaran R. Recrystallization behaviour of CaO-MgO-SiO2 system ceramic fibers. Wang Xitang / Zhang Baoguo 2007. Investigations of corrosion of different alumina spinel castables by ladle slags. Melcher Franz / Reiter Viktoria
Get PriceEffect of varying Al2O3 contents of CaO–Al2O3–SiO2 slags
Apr 01 2020 · With CaO–SiO 2 –Al 2 O 3 slags in particular some studies reported a delayed MgO particle dissolution rate because of a MgAl 2 O 4 spinel reaction layer
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Discussion on the Problems of Aluminum Magnesium Castables
Nov 28 2020 · The expansion caused by the reaction of iron oxide Al2O3 to FeO·Al2O3 in the slag is not large. CaO in the slag reacts with Al2O3 resulting in greater expansion. However the CaO and SiO2 in the slag react with Al2O3 to produce mayelite and/or anorthite. This depends on the SiO2 content in the slag and so on.
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