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high alumina refractory cement kerui refractory pdf zero cement refractory castables

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  • USB2Calcium aluminate clinker as a refractory

    The present invention provides for a refractory aggregate composition comprising an improved calcium aluminate clinker having the formula C n A x wherein C is calcium oxide and A is aluminum oxide wherein n is an integer from about 1 to about 12 wherein x is an integer from about 1 to about 24 and wherein said clinker has less less than about fifty weight percent C 12 A 7 .

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  • WOA1Castable refractoryGoogle Patents

    Provided is a castable refractory which does not tend to generate cracks or explosions when drying. This castable refractory comprising an organic fiber and constructed by adding water is characterized in that water content of the organic fiber is less than 3 mass and in that a polyethylene fiber in which oil is attached to the surface thereof is used.

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  • Improvement in Slag Resistance of No-Cement Refractory

    In order to further improve the performance at high temperatures silica-free or cement-free spinel castables seem to have potential. Calcium aluminate cement (CAC) is by far the most used binder in Al2O3-MgO refractory castable formulations and the corrosion resistance of spinel containing cement bonded castables has been

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  • New refractory concretes and binding systems Basic trends

    New refractory concretes based on high-alumina cement are classified and a description of their main properties is presented. Ultra-low-cement concretes of this group are shown to have special importance. The efficiency of the technology of continuous monolithic lining of steel-teeming ladles with the use of these concretes is noted. Use of the concretes is complicated by the necessity of long

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  • ULCCدانشگاه آزاد اسلامی واحد

    During The Heat- Up of High- Alumina Ultra Low Cement Refractory Castables Journal of American Ceramic Society 86 7 pp.. 40 H. Hommer K. wutz 2004 Recent Development in Deflocculants for Castables 9th Bienniai World Wide Congress on Refractories pp.1-6. 41 H. Homer K. Wutz 2002 Studies on a Binder Matrix of Refractory

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  • Ultra Low Cement and No Cement Castable Refractories

    Aug 14 2002 · Today virtually every refractory castable manufacturer has a complete line of these low cement castables ultra-low cement and no cement castables. Classifications. These three types of castables have been classified by ASTM as Low Cement containing 1.0 to 2.5 CaO Ultra-Low Cement 0.2 to 1.0 CaO No Cement Castables with up to 0.2 CaO.

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  • (PDF) Effect-of-particle-size-distribution-and-calcium

    castables with different Andreasen aggregate particle size distribution In other words refractory castables without cement clearly show modulus (A22 A 30 and A37) and of the equivalent castables con- better workability although a longer setting time might for some ap- taining 0.5 and 1 wt. calcium aluminate cement (MAC05 and MAC1

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  • Ultra Low Cement and No Cement Castable Refractories

    Aug 14 2002 · These dense strong refractory castables based on the use of low calcium aluminate cement content have replaced many conventional castables plastics ramming and gunning mixes and are used in many applications that require high refractoriness

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  • ProcessRefractoryClinker CementClinker Cement

    For other areas of the kiln low-cement castables roto-cast in place is the best alternative. Usually a 60 alumina is more than sufficient for the inlet cone and retaining rings in the calcining zone. For the nose-ring a more refractory higher alumina product can be

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  • Development of a CementFree Castable Refractory Bilal

    cement free and slag corrosion resistive refractory. An alumina castable refractory is studied by the contribution of specially developed active alumina based binders with micro-filler and reactive alumina components which are existed in the structure. The behaviors and properties of a cement having alumina based reference recipe and the new

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  • Nanotechnology in Refractory Castables — An Overview

    May 30 2018 · In recent times nanotechnology has gained significant attention in the field of refractory research. As the unshaped refractory especially the castable is becoming of prime importance in refractory research a good amount of work is going on globally to study the effect of nanotechnology on castables. The Effect of different nano-oxide binders formed from colloidal bonding agents and nano

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  • Processing of zero-cement refractory castables containing

    Processing of zero-cement refractory castables containing alumina and microsilica fluidez dos concretos e as regiões de menor viscosidade e tensão de escoamento indicadas nos mapas.Low and ultra-low cement self-flow castables combine good high temperature performance and faster application rate. the main objective of this work is to

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  • New refractory concretes and binding systems Basic trends

    New refractory concretes based on high-alumina cement are classified and a description of their main properties is presented. Ultra-low-cement concretes of this group are shown to have special importance. The efficiency of the technology of continuous monolithic lining of steel-teeming ladles with the use of these concretes is noted. Use of the concretes is complicated by the necessity of long

    Get Price
  • Drying behavior of hydratable alumina-bonded refractory

    May 01 2004 · In this context reductions in the CaO content of high-alumina and alumina-silica formulations have been sought to enhance thermomechanical resistance by diminishing the formation of less refractory phases 1 2 3 which in turn have led to the development of ultra-low cement and no-cement castables as well as Ca-free hydratable alumina

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  • Presidential address How cool are refractory materials

    alumina silicates magnesia MgO-C and magnesia-chrome materials as well as conventional castables low cement castables and ultra-low cement castables. Technological advances have in general led to increased tapping temperatures longer holding times and greater turbulence in the melt which resulted in demands for higher grade and

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  • Microstructures of refractory castables prepared with sol

    Jan 01 2003 · 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 .For the LCC composition spinel gels prepared from two

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  • Effect of particle size distribution and calcium aluminate

    Effect of particle size distribution and calcium aluminate cement on the rheological behaviour of all-alumina refractory castables Abílio P. Silva a Ana M. Segadães b ⁎ Deesy G. Pinto a Luiz A. Oliveira c Tessaleno C. Devezas a a University of Beira Interior Dept. Electromechanical Eng. (CAST) Covilhã Portugal b University of Aveiro Dept. Ceramics and Glass Eng. (CICECO

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  • Nanotechnology in castable refractoryScienceDirect

    Jan 01 2019 · 3.2. Colloidal suspension (alumina and silica) Sol-gel based nanotechnology without CAC is being used by the researcher to produce refractory castables. In these cases colloidal binders such as alumina (1–4 wt ) or silica (15–50 wt ) are mixed with a precursor powder such as fused alumina calcined alumina etc.

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  • USAHigh alumina refractoryGoogle Patents

    A high alumina refractory of improved resistance to deformation at high temperature and resistance to slag penetration is made with a coarse fraction ( 28 mesh) containing calcined flint clay and a fine fraction (-65 mesh) of fine silica such as volatilized silica and fine alumina. The intermediate fraction 28 X 65 mesh) can be either calcined flint clay or alumina or a mixture of these two

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  • USAHigh alumina refractoryGoogle Patents

    A high alumina refractory of improved resistance to deformation at high temperature and resistance to slag penetration is made with a coarse fraction ( 28 mesh) containing calcined flint clay and a fine fraction (-65 mesh) of fine silica such as volatilized silica and fine alumina. The intermediate fraction 28 X 65 mesh) can be either calcined flint clay or alumina or a mixture of these two

    Get Price
  • Microstructures of refractory castables prepared with sol

    Jan 01 2003 · 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 .For the LCC composition spinel gels prepared from two

    Get Price
  • High Alumina Castable RefractoryRongsheng Refractory

    High alumina castable refractory is monolithic refractory materials which is made of high alumina aggregate and powder binder and water reducer in which the amount of Al2O3 is over 48 . The high alumina castable properties are mainly high mechanical strength good heat and shock resistance anti-abrasion and so on.

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  • (PDF) Zero-cement refractory castablesResearchGate

    Recently the dispersion of high-alumina zero-cement castables containing alumina and combinations of alumina and microsilica as matrix constituents was investigated to find a systematic approach

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  • Zero-cement high-alumina castables Semantic Scholar

    Self-flow zero-cement high-alumina castables with low water content were obtained using either alumina or alumina/microsilica mixtures as fine powders.

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  • China Refractory Shapes China Refractory Shapes

    China Refractory Shapes China Refractory Shapes Suppliers and Manufacturers DirectorySource a Large Selection of Refractory Shapes Products at shaping machine heart shaped boxes heart shaped boxes for roses from China Alibaba

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  • Review and improvement of testing Standards for Refractory

    Oct 01 2013 · Refractory products are materials essential for all highly industrialised processes performed at elevated temperatures such as iron- and steelmaking cement production glass ceramics nonferrous metals power production and waste incineration. Refractories have high economic importance and serve a key function for the industry in Europe.

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  • Ultra Low Cement and No Cement Castable Refractories

    Aug 14 2002 · Today virtually every refractory castable manufacturer has a complete line of these low cement castables ultra-low cement and no cement castables. Classifications. These three types of castables have been classified by ASTM as Low Cement containing 1.0 to 2.5 CaO Ultra-Low Cement 0.2 to 1.0 CaO No Cement Castables with up to 0.2 CaO.

    Get Price
  • 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 Covilha˜ Portugal

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  • Zero-cement high-alumina castables Semantic Scholar

    Self-flow zero-cement high-alumina castables with low water content were obtained using either alumina or alumina/microsilica mixtures as fine powders.

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Rongsheng's main products are various types of unshaped refractory products, which are widely used in metallurgy, nonferrous metals, building materials, electric power, petrochemical and other industries.

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