study of al2o3 mgo refractory castables corrosion byceramics
The development of a thermodynamic model for Al2O3–MgO
Mar 01 2009 · The corrosion of the alumina magnesia castables by model slags will be studied. Table 2 gives the chemical compositions of these slags and these castables which are composed of CaO–Al 2 O 3 –MgO CaO–Al 2 O 3 –MgO–SiO 2 CaO–Al 2 O 3 –MgO–SiO 2
Get PriceEffects of Atmospheric Conditions on Slag Corrosion
By adopting dynamic induction furnace corrosion test the corrosion mechanism of lightweight Al2O3-MgO castable with different environmental oxygen partial pressure was investigated through macro- and micro-analysis XRD and thermodynamic simulation. The atmospheric condition was set to P(O2) = 0.21 atm or P(Ar) = 1.0 atm. The attained results showed that a reduced slag corrosion but
Get PriceAl2O3-based binders for corrosion resistance optimization
Sep 01 2015 · For MgO–Al 2 O 3 castables using hydratable alumina is a good alternative to induce the generation of spinel with a reduced size which usually results in the formation of a well defined protective layer of this phase at the liquid–solid interface during the corrosion process and inhibits further attack of the refractories.
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Refractory castables are prepared by mixing refractory grains bonding agents matrix components and additives by casting. We focuses here on the study and preparation of insulating castables. Insulating castables have many application in petrochemical industries and in process industries where it is used as a backup layer.
Get PriceSpinel-Coated Graphite for Carbon Containing Refractory
J. Am. Ceram. Soc. 92 8 1895–1900 (2009) DOI 10.1111/j..2009.03133.x r 2009 The American Ceramic Society Journal Spinel-Coated Graphite for Carbon Containing Refractory Castables Sunanda Mukhopadhyay w Sarbasree Dutta Sheikh A. Ansar Sumita Das and Susmita Misra Department of Chemical Technology University of Calcutta Kolkata 700 009 India Oxidation
Get Price(PDF) Thermomechanical Behavior of High-Alumina Refractory
Theoretical positions in the CaO–MgO–Al2O3 ternary phase equilibrium diagram of both the refractory and the matrix. Partial view at 1650°C in the Al2O3-rich zone (after De Aza3). October 2000 Thermomechanical Behavior of High-Alumina Refractory Castables with
Get PriceStudy of Al2O3 MgO Refractory Castables Corrosion by
Study of Al2O3-MgO Refractory Castables Corrosion by Secondary Metallurgy Steel Ladle Slags (English) Bouchetou M.L. / Prigent P. / Poirier J. in Refractories in a Shifting Globalized World UNITECR Unified International Technical Conference on Refractories Biennial Worldwide Congress 11
Get PriceThe Optimisation of Magnesia Containing Castables
Tech. Assoc. of Refractories Japan 28 (2008) 3 180–184 8 Ko Y.C. Development and production of Al2O3- MgO and Al2O3-spinel castables for steel ladles. Mining and Metallurgy Taipei 47 1 132–140 9 Auvray J.M. et al. New insights into corrosion mechanisms of dense refractory castables containing a novel calcium-magnesia-alumina
Get PriceCERAMICS INTERNATIONAL Effects of MgO micropowder on
Development of lightweight refractories has been in high demand and the matrix of these materials is crucial for its slag resistance. This paper focuses on the relationship between the microstructure and the resistance coefficient of the Al 2 O 3
Get PriceDynamic slag/refractory interaction of lightweight Al2O3
Jul 01 2015 · The corrosion rate of the lightweight Al 2 O 3 –MgO castable remained almost the same as that of conventional Al 2 O 3 –MgO castables regardless of rotation speed. Thus a refining ladle can be fabricated that weighs less and retains the same lifetime as common castables.
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Keywords MgO castables additives self-flowing microsilica gel-bond. Abstract References Full Article New Additive Packages for Self-flowing High-alumina and MgO Based Refractory Castables. Hong Peng Bjørn Myhre. Volume 5 Issue 2 Pages 99104
Get PriceAlumina-rich refractory concretes with added spinel
Three processing routes for obtaining refractory castables within the alumina-rich zone of the Al2O3–MgO–CaO ternary phase equilibrium diagram were studied starting from mixtures of (a) calcined alumina synthetic spinel and calcium aluminate cements (b) calcined alumina
Get PriceEvolution of in Situ Refractories in the 20th Century
Lenka Nevrivova MgO Influence on the Fundamental Characteristics of Corundum Refractory Castables Key Engineering Materials 722 (81) (2016). Crossref Teawon Kim Jaegeun Lee and Kun-Hong Lee Full graphitization of amorphous carbon by microwave heating RSC Advances 6 29 (24667) (2016) .
Get PriceEffects of Atmospheric Conditions on Slag Corrosion
By adopting dynamic induction furnace corrosion test the corrosion mechanism of lightweight Al2O3-MgO castable with different environmental oxygen partial pressure was investigated through macro- and micro-analysis XRD and thermodynamic simulation. The atmospheric condition was set to P(O2) = 0.21 atm or P(Ar) = 1.0 atm. The attained results showed that a reduced slag corrosion but
Get PriceEffects of Atmospheric Conditions on Slag Corrosion
By adopting dynamic induction furnace corrosion test the corrosion mechanism of lightweight Al2O3-MgO castable with different environmental oxygen partial pressure was investigated through macro- and micro-analysis XRD and thermodynamic simulation. The atmospheric condition was set to P(O2) = 0.21 atm or P(Ar) = 1.0 atm. The attained results showed that a reduced slag corrosion but
Get PriceCERAMICS INTERNATIONAL Effects of MgO micropowder on
Development of lightweight refractories has been in high demand and the matrix of these materials is crucial for its slag resistance. This paper focuses on the relationship between the microstructure and the resistance coefficient of the Al 2 O 3
Get PricePapersrefractories-worldforum
Keywords MgO castables additives self-flowing microsilica gel-bond. Abstract References Full Article New Additive Packages for Self-flowing High-alumina and MgO Based Refractory Castables. Hong Peng Bjørn Myhre. Volume 5 Issue 2 Pages 99104
Get PriceDynamic slag/refractory interaction of lightweight Al2O3
Jul 01 2015 · The corrosion rate of the lightweight Al 2 O 3 –MgO castable remained almost the same as that of conventional Al 2 O 3 –MgO castables regardless of rotation speed. Thus a refining ladle can be fabricated that weighs less and retains the same lifetime as common castables.
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Ao Huang Huazhi Gu Zou Yang Lvping Fu Pengfei Lian Linwen Jin An Approach for Modeling Slag Corrosion of Lightweight Al2O3‐MgO Castables in Refining Ladle Advanced and Refractory Ceramics for Energy Conservation and Efficiency undefined () (2016).
Get PriceA Review on Recent Advances on Magnesia-Doloma
In this study we reviewed all effort that done for improving the hydration resistance of MgO-CaO refractories by application of Nano-ad-ditives with an emphasis on the beneficial the use of additives nanoparticle for reduction of environmental pollution by various industries which used of MgO-CaO refractory bricks.
Get PricePapersrefractories-worldforum
Keywords MgO castables additives self-flowing microsilica gel-bond. Abstract References Full Article New Additive Packages for Self-flowing High-alumina and MgO Based Refractory Castables. Hong Peng Bjørn Myhre. Volume 5 Issue 2 Pages 99104
Get PriceInfluence of Additives on Slag Resistance of Al2O3‐SiO2
Jan 20 2005 · The microstructures of Al 2 O 3 –SiO 2 –SiC–C refractory matrices with aluminum silicon Si 3 N 4 BN B 2 O 3 and B 4 C additives are characterized before and after a crucible slag test and the phases present are compared to those expected at thermodynamic equilibrium. The carbon content dominates the resistance to CaO–MgO–Al 2 O 3 –SiO 2 slag penetration while the viscosity
Get Price(DOC) Monolithic Refractory Erosion corrosion Thermal
The Marangoni effect plays an important role in the local refractory corrosion at the slag–metal interface. A growing demand for refractory castables with advanced properties has given rise to a continuous technological evolution and highlighted the necessity for secondary raw materials reapplication even in refractory industry.
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Abstract The effects of B 4 C addition on the room temperature physical properties and hot mechanical properties of MgO-SiC based refractory castables were investigated using magnesia and SiC fines as starting materials and silica fume as a binder. The microstructure was characterized by scanning electron microscopy (SEM). The results showed that drying strength of MgO-SiC based castables
Get PricePapersrefractories-worldforum
Keywords MgO castables additives self-flowing microsilica gel-bond. Abstract References Full Article New Additive Packages for Self-flowing High-alumina and MgO Based Refractory Castables. Hong Peng Bjørn Myhre. Volume 5 Issue 2 Pages 99104
Get PriceTechnical Report No.53 (2010) Shinagawa Refractories
Al2O3-MgO-C brick has been widely used for the metal line of steel ladle linings. We developed "CALEAD" a high performance lightweight Al2O3-MgO-C brick. CALEAD has about 10 lower thermal conductivity and bulk density than ordinary Al2O3-MgO-C bricks in spite of having almost the same characteristics. Low Carbon MgO-C Brick. M. YOSHIDA and H
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