abstractsslag attack evaluation of in situ spinel containing
(PDF) Development of in-situ spinel bonded basic castables
The spinel-added and in-situ spinel bonded castables have been widely used in steel industry where the in-situ formation of spinel is possible at the operating temperatures above 1500°C. In non-ferrous industrial vessels with the operating
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Slag attack evaluation of in situ spinel-containing
Mar 01 2012 · Thus this work addresses the slag attack evaluation of four designed in situ spinel-containing castables (containing hydratable alumina or calcium aluminate cement as a binder source and 0 or 1 wt of silica fume) when in contact with a Fe x O rich industrial slag.
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INTERFACIAL REACTIONS BETWEEN COAL–AND
or biomass contain numerous different minerals which usually liquefy under the gasifi-cation conditions (T = 1300 to 1600ºC P = 2.75 MPa and log(P O2) = -9 to -7 (atm) 7 ). This results in the formation of a slag layer on the refractory wall. One obstacle to achieving greater reliability is the severe slag attack of refractory lin-ers.
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Sakidja Research Group Publications
2020. 2020-7 R. Goul A. Marshall R. Sakidja and J. Wu "Investigation of in-vacuo atomic layer deposition of ultrathin MgAl 2 O 4 using scanning tunneling spectroscopy" ACS Applied Electronic Materials Vol. 2 10 3121–3130 (2020). Abstract Recently disordered spinel MgAl2O4 as insulating tunnel barriers for perpendicular magnetic
Get PricePatrick WollantsAcademia.edu
At the refractory/slag interface a relatively continuous solid (Mg Mn) Al Cr 2O4 spinel layer is formed. Its density and stability decreases with higher temperatures and more turbulent conditions. The spinel formation arises through heterogeneous in situ precipitation from a slag rich in spinel
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An in-situ gas chromatography investigation into the
Results. The X-ray diffraction (XRD) patterns of pristine and a-CoPO 4 coated 0.5Li 2 MnO 3 0.5LiNi 0.4 Co 0.2 Mn 0.4 O 2 are shown in Fig. 1a.The XRD patterns of both the pristine and surface modified samples are well indexed to the rhombohedral phase with R m space group. The minor peak traces in the scanning angle (2θ) ranging between 20° and 23.5° (earmarked by an arrow in Fig. 1a) are
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Improved Corrosion Resistance of Alumina-Spinel Castable
Improved Corrosion Resistance of Alumina-Spinel Castable by Colloidal Alumina Addition. E.Y. Sako 1 V.C. Pandolfelli 1 E. Zinngrebe 2 S. van der Laan 2 M.A.L. Braulio 3. 1 Federal University of São Carlos Materials Microstructural Engineering Group (FIRE Associate Laboratory) São Carlos/Brazil 2 Tata Steel Europe RD T Ceramics Research Centre 1970–1976 IJmuiden/The
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HIGH EMISSIVITY COATINGS FOR IMPROVED PERFORMANCE
An evaluation on the properties of magnesia insulating refrectories for tundish coating at different temperatures. CORROSION MECHANISM OF SPINEL FORMING AND SPINEL CONTAINING REFRACTORY CASTABLES IN LAB AND PLANT CONDITIONS. Molin A. / Molin J. / Podworny J IN SITU OBSERVATION OF MgO DISSOLUTION IN CaO-Al 2O 3-SiO 2 BASED SLAGS. Liu
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Improved Corrosion Resistance of Alumina-Spinel Castable
The impact of pre-formed and in situ spinel formation on the physical properties of cement-bonded high-alumina refractory castables. Ceram. Int. 36 (2010) 2079– 2085 9 Braulio M.A.L. et al. Basic slag attack of spinel- containing refractory castables. Ceram.
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bulletin_2_2013_industrial-dataSlideShare
Oct 03 2015 · Fur- thermore the temperature-dependent change of the Young s modulus was significantly different for the magne- sia MA spinel sample compared to the pure magnesia A B C MgO 88.0 87.2 86.1 CaO 0.7 0.7 1.6 SiO2 0.3 0.3 0.8 Al2O3 10.5 9.1 9.0 Fe2O3 0.5 2.7 2.5 Table I. Chemical composition (wt. ) of the magnesia-based brick types containing
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PROCEEDINGSGBV
The Effect of In Situ Production and Collateral Addition of SiC on the Thermal Diffusivity of Silica Based Compositions Joao B.Baldo Wilson N.dos Santos and Roy Taylor Long Term Heating of AbO3-SiO2 ZrO2 Fiber and Al2O3-SiO2-Cr2O3 Fiber Tadasi Ootsuka Kazuo Sonobe Hideki Yamanaka and Masatosi Kurano
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Microstructural Characterization of Industrial Chro mite
Magnesia-spinel bricks were found to contain low melting calcium al uminates as bond phases in the microstructure posing a threat to service performance. Portmortem microanalysis of industrially used bricks revealed alkali attack in addition to creep as main dest ruction mechanisms for brick.
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Corrosion of refractories in lead smelting reactorsUBC
The liquid mainly consists of SiCh CaO and PbO while the solid primarily contains Fe203 and ZnO which can forms zinc ferrite spinel (ZnFe204). 2 ZnO in the K I V C E T slag reacts with Cr 2 03 and Fe 203 in the magnesite-chrome ( M C ) refractories and reacted slag to form spinels zinc chromite (ZnCr 2 04) and zinc ferrite (ZnFe204).
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P. I./Presenter Kathy Ayers Organization Proton OnSite
This presentation does not contain any proprietary confidential or otherwise restricted information. DE-EE. Develop ex-situ and in-situ comparisons to connect lab evaluation and device results. Increase stability of PPO membranes through cation • Consistent with both Benzyl attack
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Effect of MnO on Sintering and Microstructure of Al2O3-MgO
A. P. Luz M. A. L Braulio A G Lomba Martinez et al. "Slag attack evaluation of in situ spinel-containing refractory castables via experimental tests and thermodynamic simulations " Ceramics International 38 (2) (2012) 1497–1505.
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Influence of the Characteristics of Spinels on the Slag
Abstract. The XRD patterns at ambient temperature and at 1500°C showed that the spinel in the Al 2 O 3 –MgO castables fired at 1500°C for 3 h has the higher peak intensity compared to those in Al 2 O 3 –spinel castables the interplanar distance in the set (311) is 2.43 Å for the spinel in Al 2 O 3 –MgO castables as well as the spinels in Al 2 O 3 –spinel castables using spinels
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Corrosion of refractories in lead smelting reactorsUBC
The liquid mainly consists of SiCh CaO and PbO while the solid primarily contains Fe203 and ZnO which can forms zinc ferrite spinel (ZnFe204). 2 ZnO in the K I V C E T slag reacts with Cr 2 03 and Fe 203 in the magnesite-chrome ( M C ) refractories and reacted slag to form spinels zinc chromite (ZnCr 2 04) and zinc ferrite (ZnFe204).
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Monitoring dynamic electrochemical processes with in situ
Mar 12 2018 · Ptychography measurements. Electrochemical growth was followed in situ with Fresnel CDI ptychography at the SXRI beamline of the Australian Synchrotron (van Riessen et al. 2013).The monochromatized beam was shaped into a microprobe with FZP optics (160 μm outer diameter 30 μm diameter of central stop) that was delivered to the cell placed ca. 0.5 mm after the focus yielding a
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Monitoring dynamic electrochemical processes with in situ
Mar 12 2018 · Ptychography measurements. Electrochemical growth was followed in situ with Fresnel CDI ptychography at the SXRI beamline of the Australian Synchrotron (van Riessen et al. 2013).The monochromatized beam was shaped into a microprobe with FZP optics (160 μm outer diameter 30 μm diameter of central stop) that was delivered to the cell placed ca. 0.5 mm after the focus yielding a
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PROCEEDINGSGBV
The Effect of In Situ Production and Collateral Addition of SiC on the Thermal Diffusivity of Silica Based Compositions Joao B.Baldo Wilson N.dos Santos and Roy Taylor Long Term Heating of AbO3-SiO2 ZrO2 Fiber and Al2O3-SiO2-Cr2O3 Fiber Tadasi Ootsuka Kazuo Sonobe Hideki Yamanaka and Masatosi Kurano
Get Price
Synthesis and Rheological Property of Calcium Aluminate
Abstract Calcium aluminate cements with different MgAl 2 O 4 spinel (CMA) contents and particle sizes were synthesized. The results revealed that when the synthesis temperature was raised from 1400℃ to 1500℃ the particle size of MgAl 2 O 4 (MA) increased from 5 μm to 15 μm. The MA particles appeared in clusters and were distributed around the CaAl 2 O 4 /CaAl 4 O 7 (CA/CA 2) particles
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Microstructural Characterization of Industrial Chro mite
Magnesia-spinel bricks were found to contain low melting calcium al uminates as bond phases in the microstructure posing a threat to service performance. Portmortem microanalysis of industrially used bricks revealed alkali attack in addition to creep as main dest ruction mechanisms for brick.
Get Price
Professor Shaowei ZhangPublications- Engineering
(2004) Spinel-Containing Refractories Refractories Handbook CRC Press. Zhang S Lee WE Zhu B Li N. (2004) Improving hydration resistance of Al powder using inorganic-organic hybrid coatings Advances in Refractories for the Metallurgical Industries IV pages .
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INTERFACIAL REACTIONS BETWEEN COAL–AND
or biomass contain numerous different minerals which usually liquefy under the gasifi-cation conditions (T = 1300 to 1600ºC P = 2.75 MPa and log(P O2) = -9 to -7 (atm) 7 ). This results in the formation of a slag layer on the refractory wall. One obstacle to achieving greater reliability is the severe slag attack of refractory lin-ers.
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New Method of Detection of Hydrogen
The difference in the mechanical response of both types of composites is attributed to the morphology of the original ash and to that of the in situ formed spinel. 5 References 1 P. K. Rohatgi Low-cost Fly-Ash-Containing Aluminum-Matrix Composites JOM 1994 46(11) 55- 59.
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Thermodynamic Evaluation of Spinel Containing Refractory
Abstract This work addresses the thermodynamic evaluation of different spinel-containing refractory castable compositions in contact with a basic steel ladle slag (CaO/SiO2∼9).
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Improved Corrosion Resistance of Alumina-Spinel Castable
The impact of pre-formed and in situ spinel formation on the physical properties of cement-bonded high-alumina refractory castables. Ceram. Int. 36 (2010) 2079– 2085 9 Braulio M.A.L. et al. Basic slag attack of spinel- containing refractory castables. Ceram.
Get PriceAn in-situ gas chromatography investigation into the
Mar 22 2016 · The real time detection of quantitative oxygen release from the cathode is performed by in-situ Gas Chromatography as a tool to not only determine the amount of oxygen release from a
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USAInduction furnace constructionGoogle Patents
USA USDA USA US A US A US A US D A USD A US DA US A US A US A Authority US United States Prior art keywords refractory furnace induction furnace lining brick Prior art date Legal status (The legal status is an assumption and is not a legal conclusion.
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