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rheology of high performance alumina and spinel castables

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  • Novel Features of Nanoscaled Particles Addition to Alumina

    Apr 15 2010 · In addition the production of the nanoscaled AM mixture attained the expectation as it resulted in the lowest overall expansion level among all compositions and speeded up the spinel generation emerging as a suitable raw material for high‐performance AM refractory castables.

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  • Study of Spinel-Containing High Alumina Castable with

    High alumina castable with presynthesized and in situ spinel formation is studied using two different lime-containing high alumina cements. Vibratable castable compositions were studied by conventional processing using a distribution coefficient of 0.29 and heat treatments at 110 900 and 1500°C.

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  • DESIGN OF PRECAST PREFIRED LADLE NOZZLE IN Al2O

    4 selfflow spinel castables has been designed using white tabular alumina alumina-rich pre-formed spinel (two verities) reactive alumina high alumina cement and selective dispersing agents (two types). For evaluation of different properties 10 Kg sample was prepared as per specified recipe. While

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  • (PDF) Spinel-Coated Graphite for Carbon Containing

    CVD–SiC coatings and high-speed examined the comparative gain in performance of refractory impact treatments have their intrinsic pitfalls.4 Although pal- castables in aggressive conditions by this spinel-coated graphite letized graphites remarkably reduced the castable moisture and aimed at minimizing the requirement of

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  • FIRE Compendium Series Vol. 1 Refractory Castable

    3.6. Magnesia hydration and its eff ect on the performance of MgO-containing compositions 14 3.7. Spinel-containing alumina-based castables 15 3.8. Carbon-containing castables 15 3.9. Designing the microstructure for specifi c applications 16 4. Final remarks 17 5. References 17 Chapter 2 Fundamentals on particle dispersion 1. Introduction 21 2.

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  • (PDF) High-Alumina Multifunctional Refractory Castables

    In this sense this work investigated the performance of high-alumina castable compositions containing (i) different amounts of calcium aluminate cement (CAC) as binder (ii) white or brown-fused

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  • Refractory Monolithics versus Shaped Refractory Products

    Büchel G. et al. E-SY Pump — The new solution for pumpability of silica free high performance tabular alumina and spinel castables. Proceedings 47 th Intern. Colloq. on Refractories Aachen (2004) 87–90

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  • Refractory castables of the new generation in the

    The main fields of application of refractory castables (LCC) R. A. Henrichsen et al. "Influence of spinel additives on the performance of high alumina and spinel castables " in Tech. Bull. "Alcoa Industrial Chemicals " November 1994. 21. Ladle furnace

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  • Spinel-containing alumina-based refractory castables

    Aug 01 2011 · The formulation of castables containing pre-reacted spinel and that of spinel forming alumina-magnesia castables requires different approaches. The use of magnesia as one of the reactants for the spinel formation in castables often causes difficulties such as poor flow or quick setting due to the magnesia hydration.

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  • Refractory Monolithics versus Shaped Refractory Products

    Büchel G. et al. E-SY Pump — The new solution for pumpability of silica free high performance tabular alumina and spinel castables. Proceedings 47 th Intern. Colloq. on Refractories Aachen (2004) 87–90

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  • THE ROLE OF HIGH ALUMINA CEMENT IN SPINEL ORMING

    additives on the rheology of spinel castables are described in 4 . This is particularly important if the mix contains a high amount of reactive alumina. The right choice of deflocculant then becomes very important. Table 2 The design and conception of the calcium aluminate cementsS71 andS80 SECAR 71 SECAR 80 CA XXX XX CA 2 XX X Mineralogy

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  • Rheology of High Performance Alumina and Spinel Castables

    Rheology of High Performance Alumina and Spinel Castables Abstract. The article provides a basic understanding of the impact of the matrix components on the rheology of castables Keywords. References. Transactions of the Nordic Rheology Soc. 13 (2005) 75–82 First Int. Conf. on Refractories

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  • ORMULATION OF PINEL CASTABLES AND THE MPACT OF

    Spinel castables designed primarily for steel ladles are increasingly used in the quality-driven and efficiency-conscious steel industry. Two types are currently used one with spinel aggregates (preformed-spinel castable) and one with magnesia and alumina which sinter into spinel at high temperature (in-situ spinel forming castable).

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  • FORMULATION LOGICS IN SPINEL CASTABLES

    Spinel castables can be achieved either by adding a pre-formed spinel aggregate or by the reaction of MgO with Al2O3 to form in situ spinels. Besides the problems of high temperature behavior the formulation of such castables presents also a challenge in

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  • (PDF) Alumina and magnesia-based castables containing

    The alumina-spinel castables and recently alumina-MgO castables are commonly proper rheology. After firing even at high tempe improve the performance of castable in

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  • (PDF) Alumina and magnesia-based castables containing

    The alumina-spinel castables and recently alumina-MgO castables are commonly proper rheology. After firing even at high tempe improve the performance of castable in

    Get Price
  • (PDF) High-Alumina Multifunctional Refractory Castables

    In this sense this work investigated the performance of high-alumina castable compositions containing (i) different amounts of calcium aluminate cement (CAC) as binder (ii) white or brown-fused

    Get Price
  • Study of Spinel-Containing High Alumina Castable with

    High alumina castable with presynthesized and in situ spinel formation is studied using two different lime-containing high alumina cements. Vibratable castable compositions were studied by conventional processing using a distribution coefficient of 0.29 and heat treatments at 110 900 and 1500°C.

    Get Price
  • Effects of rare earth oxides additions on microstructure

    Jun 15 2017 · The thermal expansion of castables was dominated by micro factors. In order to evaluate the effect of additions on the expansion alumina-magnesia refractory castables containing different amount of Y 2 O 3 and CeO 2 as well as the reference samples A and AM were tested. The expansion values for all samples increased with the temperature during the continuous heating stage ().

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  • PREMIUM ALUMINA FOR REFRACTORY APPLICATIONS

    other high alumina aggregates used for the for-mulation of unshaped and shaped refractories. The high purity of Almatis Tabular Alumina T60/T64 ensures excellent thermomechanical properties of the refractory products. In combi-nation with carefully selected high performance binding systems refractory products based on Almatis Tabular Alumina

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  • Characteristic Analysis of High-strength Wear-Resistant

    Aug 31 2020 · Characteristic Analysis of High-strength Wear-Resistant Castables for Waste Incinerators. High-strength wear-resistant castable is a widely used castable refractory for furnaces. High-strength wear-resistant castables can be used in circulating fluidized bed boilers corrosion-resistant liners in the chemical industry wear-resistant liners in the coal industry blast furnace linings

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  • MODIFIED IN SITU SPINEL-ALUMINA CASTABLES

    researchers to opt for suitable high performance mono-lithic castables to cater for the needs of today and tomorrow 3 4 . In the modern ladles spinel-bonded high alumina based castables with desired service life are extensively used because of the appreciated quali-ties of magnesium aluminate (MgAl 2O 4) spinel especial-ly its chemical

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  • The influence of surface-modified graphites on the

    Nov 01 2019 · A special observation on the rheology of a graphite-free matrix of similar high alumina castable has been described. The change in rheological behavior due to the presence of other microfine constituents has also been noticed with a particular attention to the refractory cement bond.

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  • Reference TP-GB-RE-LAF-027 Page 1/13 HIGH

    cement has been designed to give a high level of performance including corrosion resistance when used in high performance castables. Different castable systems are investigated and the results of variations to the formulation parameters presented. Systems investigated include Alumina-Spinel Alumina-Magnesia and Ultra Low Cement types. The

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  • Effects of rare earth oxides additions on microstructure

    Jun 15 2017 · The thermal expansion of castables was dominated by micro factors. In order to evaluate the effect of additions on the expansion alumina-magnesia refractory castables containing different amount of Y 2 O 3 and CeO 2 as well as the reference samples A and AM were tested. The expansion values for all samples increased with the temperature during the continuous heating stage ().

    Get Price
  • Rheology of refractory concrete An article review

    Mar 29 2021 · Ceramic engineers have investigated the rheology of the refractory concrete to keep the balance between the desired characteristics of castables and i

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  • Rheology of refractory concrete An article review

    Mar 29 2021 · Ceramic engineers have investigated the rheology of the refractory concrete to keep the balance between the desired characteristics of castables and i

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  • Solutions for refractories

    advantage for high performing formulations such as alumina rich castables with or without reactive fillers or magnesia containing systems. > The Calcium-Magnesium-Aluminate range CMA 72 is the first inroad into a new generation of binder that provides highly reactive spinel develops unique microstructure and gives rise to superior corrosion

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  • Spinel-containing alumina-based refractory castables

    Spinel-containing alumina-based refractory castables. Due to their high corrosion resistance to basic slags either pre-formed or in situ spinel (MgAl 2 O 4 ) containing refractory castables are nowadays widely used as steel ladle linings.

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