corrosion mechanisms in refractory castables by
The Study of Molten Liquid — Refractory Interactions — It
J. Poirier et al. "Analysis and Interpretation of Refractory Microstructures in Studies of Corrosion Mechanisms by Liquid Oxides " Journal of the European Ceramic Society 28 (2008) 1557–1568. CrossRef Google Scholar
Get PriceCorrelation of Thermo-Elastic Material and Corrosion
Correlation of Thermo-Elastic Material and Corrosion Behavior of Refractory Castables by In-Situ Measurements Author Wanja Reichert Jonas Nießen Peter Leto Simon Etzold Eva Kröll Thorsten Tonnesen and Rainer Telle Subject Corrosion is one of the most common wear mechanisms
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(DOC) Monolithic Refractory Erosion corrosion Thermal
In this chapter the corrosion mechanisms between solid refractories and liquid melts (slag or metal) will be discussed. The refractory corrosion test methods will be briefly summarized. The main focus is on the discussion of tar-bonded oxide refractories which are widely used in steelmaking practice and their corrosion mechanism.
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Corrosion Mechanisms in Refractory Castables by Liquid
Corrosion in refractories in a commercial furnace is a very complex phenomenon which involves chemical and physical wear. In this work three refractory castables (A B and C) are being characterized and studied to compare their properties and determine their corrosion mechanisms in the presence of slag obtained from a steel furnace. The chemical composition of the slag consists mainly of CaO
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Corrosion of RefractoriesResearchGate
Brosnan (2004) defined corrosion of refractories as wear by loss of thickness and mass from the exposed face of the refractory as a consequence of chemical attack by a corroding fluid in a process
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Papersrefractories-worldforum
New Insights into Corrosion Mechanisms of Dense Refractory Castables Containing a Novel Calcium Aluminate Binder. Adriana Borovsky Chris Parr Jean-Michel Auvray. Volume 5 Issue 2 Pages 9598. Keywords corrosion mechanism CMA calcium aluminate microstructure refractory castables alumina-spinel alumina-magnesia spinel CA6
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Effect of Cr2O3 addition on corrosion mechanism of
Feb 01 2018 · Corrosion resistance can be defined in terms of depth of corrosion which is removal of refractory lining by slag and penetration which is permeation of liquid slag into the refractory lining . Fig. 1 shows the images of the cross-section of castables specimens (crucible) after static cup test for 6 h in air atmosphere.
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Improvement in Slag Resistance of No-Cement Refractory
The corrosion mechanisms were studied by means of Scanning Electron Microscopy (SEM/EDS) X-ray Diffraction (XRD) and thermodynamic simulations. The results confirmed that the mineral phases microstructure and liquid formation at a high temperature of the refractory materials had a strong impact on the corrosion resistance.
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High Temperature Corrosion Mechanisms of Refractories and
Hence refractory corrosion and attack of molten phases require attention to study the mechanisms and effects on refractory performance and lifetime. This is of special importance in ferroalloys production where temperatures are generally even higher than in base metal processes and the corrosion effects therefore more pronounced.
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Improved Corrosion Resistance of Alumina-Spinel Castable
Sep 09 2011 · magnesia castables. According to Mori et al. 13 the corrosion mechanism related to these materials in-volves initial reactions between Al 2O 3 from the refractory and CaO from the slag (which is present in a high concentration according to Tab. 2) leading to the precipitation of cal-cium aluminate phases. For the evaluated
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High Performance Castable Refractories for Cupola Applications
Key physical properties of refractory materials used in high-temperature corrosive applications include density porosity and strength. More appropriately the strength at temperature is one of the key indicators of performance in service. The data in Table 2 below shows a comparison of various castables with newly developed sol bonded products.
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CORROSION MECHANISMS IN REFRACTORY METAL-ALKALI
The principal corrosion mechanisms in refractory metal-alkali systems are dissolution mass transfer and impurity reactions. In general niobium tantalum molybdenum and tungsten have low solubilities in the alkali metals even to very high temperatures and static corrosion studies have verified that the systems are basically compatible.
Get PriceNew aspects on the corrosion resistance of dense
A correlation between the thermo-mechanical properties from phase and particle distributions microstructural features amorphous phase of the castables and the corrosion mechanism is established. Moreover new routes for the optimization of castable corrosion resistance via formulation control are highlighted.
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ew I INto CorrosIoN MeChaNIsMs of D r Castables
the possible different mechanisms responsible for a higher corrosion resistance of CMA72. 2 Experimental Procedure This study specifically focuses on the microstructure of alumina-spinel and alumina-magnesia ladle castables after a corrosion test using a rotary furnace. Tab. 1 gives the mass composition of these castables MA1 and MA2
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The corrosion and microstructure relationship for cement
Apr 01 2012 · Thus two mechanisms are proposed in this paper for the aggregate corrosion of the castables containing different methods of spinel incorporation. For the 21 wt IS castable the tabular alumina aggregates were mostly coated by a CA 6 layer as shown in Fig. 6 and thus the alumina remained for the reaction with the slag was reduced resulting
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Improvement in Slag Resistance of No-Cement Refractory
The corrosion mechanisms were studied by means of Scanning Electron Microscopy (SEM/EDS) X-ray Di raction (XRD) and thermodynamic simulations. The results confirmed that the mineral phases microstructure and liquid formation at a high temperature of the refractory materials
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Study of Al2O3 MgO Refractory Castables Corrosion by
Refractory castables containing alumina-magnesia/self-forming spinel (MgAl2O4) are used in impact pads of steel ladles in steelmaking processes. In order to understand the wear mechanisms of refractory materials several recipes were tested from a corrosion slag resistance and thermal shock point of view.
Get PriceThe corrosion of refractory castables Request PDF
Experiments on the corrosion of alumina based refractory castables containing 1 2 5 and 10 mass- of cement and 10 mass- of spinel were conducted in an induction furnace at 1550 1650 and 1750
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Deffloculated castablesSECAR® solutions for refractories
Deflocculated castables can be designed by including SECAR® 71 SECAR® 712 SECAR Plenium® SECAR Xeniom® and CMA 72. Among the available deflocculants used in the matrix Peramin® AL 200 and Peramin® AL 300 are two excellent fluidifying agents. Details about deflocculated castable in
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Improvement in Slag Resistance of No-Cement Refractory
The corrosion mechanisms were studied by means of Scanning Electron Microscopy (SEM/EDS) X-ray Diffraction (XRD) and thermodynamic simulations. The results confirmed that the mineral phases microstructure and liquid formation at a high temperature of the refractory materials had a strong impact on the corrosion resistance.
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Refractory castables Cement castables Superior gunning performance and excellent general-purpose characteristics • These refractories enable the application of refractory lining walls offering excellent corrosion resistance heat resistance strength abrasion resistance and performance on par with shaped refractories without using a
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Papersrefractories-worldforum
New Insights into Corrosion Mechanisms of Dense Refractory Castables Containing a Novel Calcium Aluminate Binder. Adriana Borovsky Chris Parr Jean-Michel Auvray. Volume 5 Issue 2 Pages 9598. Keywords corrosion mechanism CMA calcium aluminate microstructure refractory castables alumina-spinel alumina-magnesia spinel CA6
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ColloquiumICR 2020
Cement free refractory castables for waste and biomass incineration silicon carbide raw material characterization fabrication process and properties In-situ measurement of hot corrosion (mechanisms) by resonant frequency and damping analysis (RFDA) view presentation. Veres Novel insights into the oxidation mechanism of NSiC
Get PriceModelling of the swelling induced by oxidation in SiC
Modelling of the swelling induced by oxidation in SiC-based refractory castables Tarek Merzoukiab Eric Blonda Nicolas Schmittcd Marie-Laure Bouchetoue Thierry Cutardf Alain Gassera aUniv Orl eans PRISME EA4229 45072 Orl eans France bnow at LIVS Univ. of Versailles Saint-Quentin 78140 V elisy France cLMT-Cachan CNRS UMR 8535 ENS Cachan 94235 Cachan France
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Refractory Corrosion Mechanisms in a Novel High Carbon
Sep 27 2016 · The present paper presents the refractory design for a novel HCFeMn smelting furnace that other than standard submerged arc furnaces allows the processing of fine ores. A combination of basic and non-basic materials comprising bricks castables and ramming was chosen under consideration of the unique furnace design and process conditions. Post-mortem investigations on refractory
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Improved Corrosion Resistance of Alumina-Spinel Castable
Sep 09 2011 · magnesia castables. According to Mori et al. 13 the corrosion mechanism related to these materials in-volves initial reactions between Al 2O 3 from the refractory and CaO from the slag (which is present in a high concentration according to Tab. 2) leading to the precipitation of cal-cium aluminate phases. For the evaluated
Get Price
Refractory Corrosion Mechanisms in a Novel High Carbon
The present paper presents the refractory design for a novel HCFeMn smelting furnace that other than standard submerged arc furnaces allows the processing of fine ores. A combination of basic and non-basic materials comprising bricks castables and ramming was chosen under consideration of the unique furnace design and process conditions. Post-mortem investigations on refractory samples
Get Price
Correlation of Thermo-Elastic Material and Corrosion
Correlation of Thermo-Elastic Material and Corrosion Behavior of Refractory Castables by In-Situ Measurements Author Wanja Reichert Jonas Nießen Peter Leto Simon Etzold Eva Kröll Thorsten Tonnesen and Rainer Telle Subject Corrosion is one of the most common wear mechanisms
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(PDF) The corrosion and microstructure relationship for
The corrosion and microstructure relationship for cement-bonded spinel refractory castables. April 2012 features and the corrosion resistance of castables containing pre-formed and in situ
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