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microstructures of refractory castables prepared with sol

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  • Microstructural changes and evolutions of elastic

    Microstructural changes and evolutions of elastic properties versus temperature of alumina and alumina–magnesia refractory castables Synthesis of nanosized zirconium carbide powders by a combinational method of sol–gel and pulse current heating. Microstructures and ablation resistance of WSi2/ZrSi2/ZrxHf1-xC/SiC coating based on a

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  • Effect of Alumina Sol in No-Cement Refractory Castables

     · This paper deals with the performance of alumina sol prepared from a cheaper precursor and used as a bonding agent in no-cement refractory castables fabricated by simple tapping technique. The physical properties of sol-bonded-castables indicate a significant improvement at

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  • UNIVERSITY OF CALCUTTA

     · 3. Microstructures of refractory castables prepared with sol gel additives Ceramics International 29(6)(2003) 4. In situ spinel bonded refractory castable in relation to coprecipitation and sol-gel derived spinel forming agents Ceramics International 29(8)(2003) 5.

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  • Santonu GhoshR D Project manager for strategic projects

    Microstructures of refractory castables prepared with sol–gel additives Ceramics International 2003 Several kinds of inorganic sol and gel materials were applied to high alumina based low and ultra low cement refractory castable compositions and these were fired at elevated temperature.

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  • additives for refractorySilica Fume for Sale

    Microstructures of refractory castables prepared with sol–gel For the ULCC composition alumina silica mullite and spinel sols were applied as additives. The application of silica sol is quite common in refractory castables whereas the use of alumina mullite and spinel sols (prepared from cheaper precursor) in high alumina based

    Get Price
  • Synthesis and Characterization of Alumina Sol and Its Use

     · Alumina sol was prepared from inorganic precursors and characterized for its solid content particle size analysis DSC‐TG phase formation on calcination etc. The sol was used as sole binder in high‐alumina refractory castables with different particle size distributions (PSDs) by varying distribution coefficients as per Dinger and Funk

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  • Nanomaterials in refractory technology Refractories and

     · S. Ghosh et al. "Microstructures of refractory castables pre- Russian economy. However the possibility of manipulating pared with sol-gel additives " Ceram. Internat. 29 671677 the properties of materials at a level close to atomic opens up (2003). broad perspectives for resolving specific applied problems in 6. F. A.

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  • Synthesis and Characterization of Alumina Sol and Its Use

     · Alumina sol was prepared from inorganic precursors and characterized for its solid content particle size analysis DSC‐TG phase formation on calcination etc. The sol was used as sole binder in high‐alumina refractory castables with different particle size distributions (PSDs) by varying distribution coefficients as per Dinger and Funk model. The castables were processed conventionally

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  • Effect of silica sol of different routes on the properties

     · Effect of silica sol on low cement castables 229 Table 3 shows that compressive strength values are increased by adding silica sol and the values are maxi-mum in case of systems A and C. The ultrafine particles are dispersed between the refractory grains and formed a coagulated hydraulic bond in presence of silica sol which

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  • SUNANDA MUKHOPADHYAYUniversity Of Calcutta

    Microstructures of refractory castables prepared with sol gel additives Ceramics International 29(6)(2003) In situ spinel bonded refractory castable in relation to coprecipitation and sol-gel derived spinel forming agents Ceramics International 29(8)(2003)

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  • NON-CemeNt refraCtOry CaStableS CONtaiNiNg NaNO

     · pumpable refractory products have been developed based on a patented sol-gel bonding nanotechnology containing no CAC. Nano-silica is one of the most popular binders for refractory monolithic and castable applications. Nano-silica sol or colloidal silica is a stable water-based suspension containing up to 40 wt. of nano-metric

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  • ON THE HIGH TEMPERATURE BENDING STRENGTH OF

     · of a refractory material about its flexural strength at elevated temperatures. It is the true indicator of the suitability and performance of a refractory at high temperatures 6 7 . As for refractory castables aluminate cement (the Al2O3–CaO system) is mostly used as a binding component and granulated refractory materials from

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  • Alumina-Rich Castables Microstructural and

     · 2.1. Refractory Materials Two types of matrix from refractory castables with comparable microstructures and di erent mineral compositions were targeted. This allowed us to isolate the e ect of calcium hexa-aluminate as a refractory component regarding its potential to replace alpha alumina for specific biomass applications.

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  • Effects of silica sol on the preparation and high

     · Silicon oxynitride bonded SiC castables (SS castables) were prepared via in-situ nitridation at 1420 °C for 6 h in flowing N 2 using black SiC SiO 2 fume and Si powder as starting materials and silica sol as a binder. Phase compositions and microstructures of as-prepared SS castables were characterized and the effects of silica sol s type and amount on their cold and hot moduli of rupture

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  • Alumina-Rich Castables Microstructural and

     · 2.1. Refractory Materials Two types of matrix from refractory castables with comparable microstructures and di erent mineral compositions were targeted. This allowed us to isolate the e ect of calcium hexa-aluminate as a refractory component regarding its potential to replace alpha alumina for specific biomass applications.

    Get Price
  • FORMATION OF HEXA-ALUMINATE SOLID SOLUTION

     · Refractory castables based on Tabular alumina T60/T64 (C1) and white fused alumina (WFA) (C2) were prepared in addition to the synthetic raw mixtures. As shown in Tab. 2 the castables contain 12 wt. pre-formed spinel AR 78 which is a sintered spinel with a phase composition of 100 alumina-rich non-stochiometric spinel.

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  • Rheology of refractory concrete An article review

    Refractory castables Refractory castables classification. Refractory castables can be classified according to its lime (CaO) content into conventional castables (CC) that contain 15–30 calcium aluminate cement (more than 2.5 CaO) low cement castables (LCC) where 2.5 > CaO > 1.0 ultra-low cement (ULLC) where 1.0 > CaO > 0.2 and no cement castables (NCC) where CaO 0.20 .

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  • Microstructural changes and evolutions of elastic

    Microstructural changes and evolutions of elastic properties versus temperature of alumina and alumina–magnesia refractory castables Synthesis of nanosized zirconium carbide powders by a combinational method of sol–gel and pulse current heating. Microstructures and ablation resistance of WSi2/ZrSi2/ZrxHf1-xC/SiC coating based on a

    Get Price
  • Improvement of properties of self-flowing low-cement

    XRD results observed for the refractory castable contain-ing 6 wt of microsilica (MS6) prepared by Gerotto et al. 19 20 . The microstructural investigation The scanning electron microscopy (SEM) technique was used to evaluate the resultant microstructures of the present castable. Figure 3(a) is a SEM micrograph

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  • INFLUENCE OF NANO SILICA ON PROPERTIES AND

    It has been observed that refractory castables prepared with low amount of CAC may display heterogeneities in the form of large pores and flaws in the microstructure which can significantly deteriorate the mechanical properties 3 9 10 . While silica sol is adding to refractory mixtures the nanosized silica particles

    Get Price
  • Alumina-Rich Castables Microstructural and

     · 2.1. Refractory Materials Two types of matrix from refractory castables with comparable microstructures and di erent mineral compositions were targeted. This allowed us to isolate the e ect of calcium hexa-aluminate as a refractory component regarding its potential to replace alpha alumina for specific biomass applications.

    Get Price
  • Synthesis and Characterization of Alumina Sol and Its Use

     · Alumina sol was prepared from inorganic precursors and characterized for its solid content particle size analysis DSC‐TG phase formation on calcination etc. The sol was used as sole binder in high‐alumina refractory castables with different particle size distributions (PSDs) by varying distribution coefficients as per Dinger and Funk

    Get Price
  • CORROSION MECHANISMS IN REFRACTORY CASTABLES

     · CORROSION MECHANISMS IN REFRACTORY CASTABLES BY LIQUID OXIDES L.Tadeo Ibarra1 A.M. Guzmán1 D.I. Martínez1 G. Alan Castillo1 1Faculty of Mechanical and Electrical Engineering Autonomous University of Nuevo Leon Pedro de Alba S/N Cd. Universitaria San Nicolás de los Garza Nuevo León

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  • Thermomechanical evaluation of self-flowing refractory

     · Thermomechanical evaluation of self-flowing refractory castables with and without the addition of aluminate cement Deesy G. Pinto a Abı´lio P. Silva a Ana M. Segada˜es b Tessaleno C. Devezas a a University b ofBeira Interior Department Electromechanical Engineering 6200

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  • INFLUENCE OF NANO SILICA ON PROPERTIES AND

    It has been observed that refractory castables prepared with low amount of CAC may display heterogeneities in the form of large pores and flaws in the microstructure which can significantly deteriorate the mechanical properties 3 9 10 . While silica sol is adding to refractory mixtures the nanosized silica particles

    Get Price
  • Analysis of liquid metal foams through X-ray radioscopy

     · Microstructures of refractory castables prepared with sol–gel additives. Numerical study of the stress state of a deformation twin in magnesium. Recent Publications. Influence of supporting amorphous carbon film thickness on measured strain variation within a nanoparticle

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  • Analysis of liquid metal foams through X-ray radioscopy

     · Microstructures of refractory castables prepared with sol–gel additives. Numerical study of the stress state of a deformation twin in magnesium. Recent Publications. Influence of supporting amorphous carbon film thickness on measured strain variation within a nanoparticle

    Get Price
  • Rheology of refractory concrete An article review

    Refractory castables Refractory castables classification. Refractory castables can be classified according to its lime (CaO) content into conventional castables (CC) that contain 15–30 calcium aluminate cement (more than 2.5 CaO) low cement castables (LCC) where 2.5 > CaO > 1.0 ultra-low cement (ULLC) where 1.0 > CaO > 0.2 and no cement castables (NCC) where CaO 0.20 .

    Get Price
  • additives for refractorySilica Fume for Sale

    Microstructures of refractory castables prepared with sol–gel For the ULCC composition alumina silica mullite and spinel sols were applied as additives. The application of silica sol is quite common in refractory castables whereas the use of alumina mullite and spinel sols (prepared from cheaper precursor) in high alumina based castables has been discussed by some authors .

    Get Price

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