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porogenic behavior of water in high alumina castablesharadaa ceramics refcast ha high alumina castables

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  • Characteristics of castables incorporating highly porous

    Jul 01 2019 · A porous alumina body prepared via a high-temperature evaporation method using a Na 2 O-B 2 O 3-SiO 2 glass flux was found to have a high porosity of 69.8 and a compressive strength of 1.8 MPa. This alumina exhibited a "house of cards" structure consisting of platelets as the primary particles and a peak pore size of 3.5 μm.

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  • Porogenic Behavior of Water in High-Alumina Castable

    A. D. V. Souza and R. Salomão "Evaluation of the porogenic behavior of aluminum hydroxide particles of different size distribution in castable high-alumina structures " Journal of the European Ceramic Society vol. 36 no. 3 pp. 885–897 2016.

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  • Human Health Hazards Aluminum in Drinking Water

    aluminum pots and pans or in aluminum foil can increase their aluminum content. Aluminum-containing antacids food additives and antiperspirants are additional sources of exposure. Drinking water is not usually a significant source of aluminum exposure. However high levels of aluminum

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  • Hydration of refractory oxides in castable bond systems—I

    Apr 01 2002 · Addition of fine reactive magnesia may lead to formation of refractory spinel type ceramic bonds. Alumina–magnesia based castable refractories have superior high temperature corrosion resistance than competing materials such as high alumina castables and have found applications in steel ladles RH degasser and cement kilns.

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  • High‐Temperature Stability of Alumina in Argon and Argon

    Dec 22 2004 · The high‐temperature stability of alumina (Al 2 O 3) in argon and argon/water‐vapor (Ar/H 2 O) environments has been investigated. Samples were exposed at temperatures of 1300°C–1700°C for 10 h. The microstructure flexural strength and volume all showed significant changes in the Ar/H 2 O environment at 1700°C. Samples also became whiter because of the

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  • Charging Behavior at the Alumina–Water Interface and

    The interaction of water and the alumina surface is comprehensively reviewed. Water can be incorporated in the alumina crystal structure resulting in the formation of aluminum hydroxides such as gibbsite. Alumina dissolves into water to an extent that depends primarily upon the

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  • High-alumina refractory castables bonded with novel

    Jun 01 2018 · Creep profiles of the designed high-alumina castables bonded with colloidal silica (SC) SioxX®-Zero (SZ) and/or submicron alumina (SMA) and without (boron-free) or with 1 wt of B 4 C (B). All samples were pre-fired at 1550 °C for 24 h and the applied compressive load was 0.2 MPa.

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  • Charging Behavior at the Alumina–Water Interface and

    Charging Behavior at the Alumina–Water Interface and Implications for Ceramic Processing George V. Franks w and Yang Ganz Chemical and Biomolecular Engineering University of Melbourne Victoria 3010 Australia The interaction of water and the alumina surface is comprehen-sively reviewed. Water can be incorporated in the alumina crys-

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  • High-alumina phosphate-bonded refractory castables Al(OH

    Aug 01 2015 · Aiming to better understand the mechanical behavior of the designed high-alumina phosphate-bonded refractories the compositions containing hydratable alumina (35 wt of concentration H 3 PO 4 solution named 35HP-HA) and Al(OH) 3 (48 wt of concentration H 3 PO 4 solution called 48HP-HY) were also evaluated and the obtained results are shown

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  • Corrosion Behavior of Alumina Ceramics in Caustic Alkaline

    The corrosion rate and changes in the microstructure and fracture strength of alumina ceramics (93.0 Al 2 O 3 and 99.5 Al 2 O 3) were studied in 0.1m to 25m NaOH solutions at 150°C to 200°C where m= mol/(kg of H 2 O). The attack of the caustic alkaline solution started at the grain boundaries.

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