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design of refractory materials ratio

  • Natural-mixing guided design of refractory high

    2020-8-24 · A refractory high-entropy alloy was designed with the composition chosen based on the natural-mixing characteristics among refractory elements; this …

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  • Design of Castable Refractory Nickel Alloys with ...

    2018-6-18 · Design of the alloy.The composition of a new castable refractory alloy was searched by the method of computer design [] on the base of the Ni – Al – Cr – Mo – Co – W – Ta – Ti – Re – C – B – Zr – La nickel system.The algorithm of computer search for the new alloy was as follows [].The concentration of components in the chosen alloying system was specified in accordance ...

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  • Design of high-strength refractory complex solid

    2018-3-28 · Using electronic alloy design concepts and criteria, we identified higher-strength refractory (Mo-W)-Ta-(Ti-Zr) alloys from materials physics and engineering perspectives.

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  • The first-principles design of ductile refractory alloys ...

    2008-10-18 · The purpose of this work is to predict elastic and thermodynamic properties of chromium-based alloys based on first-principles calculations and to demonstrate an appropriate computational approach to develop new materials for high-temperature applications in energy systems. In this study, Poisson ratio is used as a screening parameter to identify ductilizing additives to the refractory alloys.

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  • Refractory Metals Research Summary The First-Principles ...

    2008-6-12 · ratio of 0.42 and it has an elongation of 50%; niobium has a Poisson ratio of 0.40 and it has an elongation of 44% at room temperature. Other ductile met-als (e.g., silver, palladium, and copper) have high values of Poisson ratio. In contrast, commonly known brittle metals have low values of Poisson ratio. For example, beryllium has a Poisson

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  • Refractory Concrete - Rongsheng Refractory Supplier

    Refractory concrete properties depend on the materials and mix radio of refractory aggregate, admixture and cementing material. Its materials, composition and burdening are similar to castable refractory. High heat refractory concrete can serve in the temperature vary from 900℃ to 1600℃.

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  • The mechanism of agglomeration of the refractory

    2016-2-1 · Materials and methods2.1. Refractory materials and additives. The main refractory bed material was a standard olivine mined at the Åheim Plant in Norway and provided by the Sibelco Company, France. Olivine is an orthosilicate corresponding to the complete solid solution between forsterite (Mg 2 SiO 4) and fayalite (Fe 2 SiO 4).

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  • Design, structure, microstructure and gamma

    2021-2-15 · Design, structure, microstructure and gamma radiation shielding properties of refractory concrete materials containing Ba- and Sr-doped cements ... Several attempts have been made to investigate e.g. the effect of cement and aggregate type and water to cement weight ratio (w/c) on the physical properties, gamma and neutron ... calcium aluminate ...

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  • Methods for Improving the Resistance of Refractory ...

    2021-4-6 · Rongsheng’s refractory products have been sold to more than 60 countries and regions all over the world, for example, etc. And received praise and return orders from customers. Rongsheng also has rich experience in the development and design of refractory bricks and various unshaped refractory materials. Our mature technical team has already ...

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  • First-Principles Study of Structural, Mechanical, and ...

    The structural, mechanical, and thermodynamic properties of refractory metals Rh, Ir, W, Ta, Nb, Mo, Re, and Os have been systematically investigated by first-principles calculations based on density functional theory. Comparative studies reveal that Young's modulus (E = 636.42 GPa), shear modulus (G = 256.81 GPa), bulk modulus (B = 406.55 GPa), and microhardness (H = 44.69 GPa) of hexagonal ...

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  • INTEGRATED DESIGN OF REFRACTORY METAL BASED

    2014-3-24 · rapid development of refractory metal based alloys begins with the concept of integrated design.15 The integrated design utilizes the multi-scale computational methods to design materials for requirements of processing, microstructure, and performance. For example, a material can be designed for its improved ductility for processing,

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  • The first-principles design of ductile refractory alloys ...

    2008-10-18 · The purpose of this work is to predict elastic and thermodynamic properties of chromium-based alloys based on first-principles calculations and to demonstrate an appropriate computational approach to develop new materials for high-temperature applications in energy systems. In this study, Poisson ratio is used as a screening parameter to identify ductilizing additives to the refractory alloys.

    Get Price
  • Discrete element modeling— A promising method for ...

    2020-3-2 · A promising method for refractory microstructure design By M. H. Moreira, T. M. Cunha, M. G. G. Campos, M. F. Santos, T. Santos Jr., D. André, and V. C. Pandolfelli Discrete element modeling is a tool with great potential for modeling refractory materials—if challenges to applying DEM for continuous problems are overcome. R

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  • Design and characterization of eutectic refractory high ...

    2021-5-1 · The second step was associated with obtaining an alloy with a dual-phase bcc+Laves phase structure. It is known that Cr is one of the strongest Laves phase-forming elements in the Al-Cr-Nb-Ti-(V)-Zr system [41,, , , ]; therefore, a Cr x Nb 30 Ti 40 Zr 30-x quasi-binary phase diagram was constructed (Fig. 1c).According to the diagram, an addition of Cr should result in the appearance of a C15 ...

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  • Computational Design and Experimental Verification of ...

    2014-3-24 · 23rd Annual Conference on Fossil Energy Materials – May 12-14, 2009 – Pittsburgh, PA Computational Design and Experimental Verification of Refractory Metal-Based Alloys Ömer Doğan, Michael Gao, Wren Chan, Paul King

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  • Boiler Refractory Materials | Replacement Procedure

    2016-12-18 · Base-to-Acid Ratio. Documenting the environment to which boiler refractory materials were exposed is an important part of the discover process. Calculating the base-to-acid ratio offers more details on the type of material that should have been installed in the first place.

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  • The first-principles design of ductile refractory alloys ...

    The purpose of this work is to predict elastic and thermodynamic properties of chromium-based alloys based on first-principles calculations and to demonstrate an appropriate computational approach to develop new materials for high-temperature applications in energy systems. In this study, Poisson ratio is used as a screening parameter to identify ductilizing additives to the refractory alloys.

    Get Price
  • HARBISON-WALKER Handbook of Refractory Practice 2005

    2020-2-26 · different refractory brands or the custom design of new refracto-ries to better meet the altered service conditions. Helping customers understand and implement a proper refractory management strategy is the first step in an on-going relationship between Harbison-Walker and the refractory user. Sales and technical represen-

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  • Refractory Mortar - Types and Construction Practice

    Refractory mortar is a specially engineered mixture of sand, calcium aluminate, cement, and fireclay. It is used to lay firebrick in places that are exposed to extremely high temperature. The refractory mortar is utilized only to build fire places and ...

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  • SECTION 2: INSULATION MATERIALS AND PROPERTIES

    2016-7-22 · SECTION 2 INSULATION MATERIALS AND PROPERTIES MP-4 l. Fire retardancy: Flame spread and smoke developed ratings are of vital importance; referred to as 'surface burning characteristics'. m. Resistance to ultraviolet light: Significant if application is outdoors and high intensity indoors. n. Resistance to fungal or bacterial growth: Is important in all insulation applications.

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  • Discrete element modeling— A promising method for ...

    2020-3-2 · A promising method for refractory microstructure design By M. H. Moreira, T. M. Cunha, M. G. G. Campos, M. F. Santos, T. Santos Jr., D. André, and V. C. Pandolfelli Discrete element modeling is a tool with great potential for modeling refractory materials—if challenges to applying DEM for continuous problems are overcome. R

    Get Price
  • Boiler Refractory Materials | Replacement Procedure

    2016-12-18 · Base-to-Acid Ratio. Documenting the environment to which boiler refractory materials were exposed is an important part of the discover process. Calculating the base-to-acid ratio offers more details on the type of material that should have been installed in the first place.

    Get Price
  • Refractory › Thermo Feuerungsbau

    Regardless of the manufacturer we supply refractory materials as per client´s requirements. With THERMO the customers can be felt safe in terms of quality and price-performance ratio – refractories is a matter of trust. Refractory materials: Refractory and insulating castables; Refractory and insulating fire bricks; Ceramic fibre materials

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  • CiteSeerX — First Principles Design of Ductile

    CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): The purpose of this work is to predict elastic and thermodynamic properties of Cr-based alloys based on first-principles calculations and to demonstrate an appropriate computational approach to develop new materials for high-temperature applications in energy systems.

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  • Integrated Design and Rapid Development of

    2008-7-1 · OSTI.GOV Conference: Integrated Design and Rapid Development of Refractory Metal Based Alloys for Fossil Energy Applications

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  • Destruction of Refractory Materials for Grate Type

    2020-8-8 · Refractory materials for the back arch of the incinerator combustion chamber. At present, most of the refractory lining materials used in the front and rear arch areas have the characteristics of fire resistance, wear resistance, good thermal shock resistance, and strong erosion resistance.

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  • Reactor refractory lining | Equipment | Products |

    2021-5-29 · Reactor refractory lining. ... Based on many years of industrial operation with one-step autothermal reformers operating at a low S/C ratio of 0.6, Topsoe is the leading knowledge hub within the field of refractory for such reactors. ... Equally important is design, engineering, materials, manufacturing, installation, and maintenance, and our ...

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  • Common Refractory Installation Failures and How to

    2020-8-13 · Refractory installation is an essential part of heat-generating industries. Nonetheless, the refractory installation lacks the attention it deserves. That is why you need a certified and experienced refractory contractor. Because they can properly design and install refractory engineering. Hence, you can save up to 5-7% of fuel costs. But, it is difficult to detect why refractory materials ...

    Get Price
  • Standard Test Method for Dynamic Young s Modulus,

    2017-2-6 · sonÕs ratio. 4. SigniÞcance and Use 4.1 This test method is non-destructive and is commonly used for material characterization and development, design data generation, and quality control purposes. The test assumes that the properties of the specimen are perfectly isotropic, which may not be true for some refractory materials. The test

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  • The effect of configurational entropy on mechanical ...

    2020-12-1 · In the previous studies on refractory HEAs with the same component elements but in different contents [11,16,17,35,36], we found that the HEAs with equalatomic ratio have the highest yield strength in most conditions [11,17,35,36]. As the name of HEAs implies, high entropy effect is the first essential core effect.

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  • Refractory Standards - ASTM

    Standard Test Method for Sonic Velocity in Refractory Materials at Room Temperature and Its Use in Obtaining an Approximate Young's Modulus: C1548 - 02(2020) Standard Test Method for Dynamic Young’s Modulus, Shear Modulus, and Poisson’s Ratio of Refractory Materials by Impulse Excitation of …

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  • Design of high-strength refractory complex solid-solution ...

    2020-10-13 · Design of high-strength refractory complex solid-solution alloys Abstract Nickel-based superalloys and near-equiatomic high-entropy alloys containing molybdenum are known for higher temperature strength and corrosion resistance. Yet, complex solid-solution alloys offer a huge design space to tune for optimal properties at slightly reduced entropy.

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  • Selection of Proper Refractory Materials for Energy

    2012-1-6 · Refractory lining of an aluminum melting and holding furnace are engineered with a primary design objective to keep the furnace condition stable throughout the life of the furnace. In consideration of energy saving, ideally all the heat added to the furnace should be used to heat the load or stock but in practice, a lot of heat is lost in several ways.

    Get Price
  • Reactor refractory lining | Equipment | Products |

    2021-5-29 · Reactor refractory lining. ... Based on many years of industrial operation with one-step autothermal reformers operating at a low S/C ratio of 0.6, Topsoe is the leading knowledge hub within the field of refractory for such reactors. ... Equally important is design, engineering, materials, manufacturing, installation, and maintenance, and our ...

    Get Price
  • International Journal of Refractory Metals & Hard Materials

    2018-6-6 · 3.1. Design of micro-compression experiments in cemented carbides Micropillar compression is a relatively new experimental technique used mostly in metallic single crystal materials. Within this context, studies have discussed the accurate way to design such experiments due to experimental constraints [7,10]. To the best knowledge of the au-

    Get Price
  • APPLICATION OF HIGH INTENSITY REFRACTORY

    2010-11-12 · Refractory materials containing MgO are readily dissolved into the slag as thermodynamic equilibrium considerations attempt to correct this imbalance. The propensity for corrosion is determined by the slag acidity, quantified in terms of the SiO2 : MgO ratio. Fresh slag is continuously produced,

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  • (PDF) The pO-Index and R Ratio Gap Methods for the ...

    The EDS analysis (X_EDS termine the corrosion probability of refractory materials, in INCA, Oxford Inst., Hillsboro, OR) evaluated the average contact with melts, is the ratio R of the charges represented by chemical composition of the glassy phase found in the as- the network-dwelling cation to the number of A131 ions:14 received refractory ...

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  • Common Refractory Installation Failures and How to

    2020-8-13 · Refractory installation is an essential part of heat-generating industries. Nonetheless, the refractory installation lacks the attention it deserves. That is why you need a certified and experienced refractory contractor. Because they can properly design and install refractory engineering. Hence, you can save up to 5-7% of fuel costs. But, it is difficult to detect why refractory materials ...

    Get Price
  • A new method to determine the Young's modulus of ...

    2021-5-10 · plied on refractory materials, it is worth men- tioning that it can be used to determine the Young's modulus of any material. 2 Material and experimental methods 2.1 Materials This contribution has been performed in the framework of a French ANR project dealing with the degradation Of refractory materials used in waste-to-energy facilities (ANR

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  • Multiplicity of dislocation pathways in a refractory ...

    2020-10-2 · Alloys containing multiple elements can be very strong but often suffer from poor ductility. F. Wang et al. found that different mechanisms accommodated plasticity in a molybdenum-niobium-titanium multiprincipal element alloy (see the Perspective by Cairney). Instead of so-called “screw” dislocations, deformation is accommodated by multiple pathways that include “edge” dislocations and ...

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  • Refractory Standards - ASTM

    Standard Test Method for Sonic Velocity in Refractory Materials at Room Temperature and Its Use in Obtaining an Approximate Young's Modulus: C1548 - 02(2020) Standard Test Method for Dynamic Young’s Modulus, Shear Modulus, and Poisson’s Ratio of Refractory Materials by Impulse Excitation of …

    Get Price
  • Design of high-strength refractory complex solid-solution ...

    2020-10-13 · Design of high-strength refractory complex solid-solution alloys Abstract Nickel-based superalloys and near-equiatomic high-entropy alloys containing molybdenum are known for higher temperature strength and corrosion resistance. Yet, complex solid-solution alloys offer a huge design space to tune for optimal properties at slightly reduced entropy.

    Get Price
  • Selection of Proper Refractory Materials for Energy

    2012-1-6 · Refractory lining of an aluminum melting and holding furnace are engineered with a primary design objective to keep the furnace condition stable throughout the life of the furnace. In consideration of energy saving, ideally all the heat added to the furnace should be used to heat the load or stock but in practice, a lot of heat is lost in several ways.

    Get Price
  • Development of Refractory Materials for Ladle Lining

    2020-9-30 · Development of refractory materials for ladle lining. According to a steel mill, they have 3 types of the ladle. In the order of commissioning, they are 120 t ladle, 150 t ladle, and new 150 t ladle, of which the new 150 t ladle is modified from the original 40 t ladle.

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  • International Journal of Refractory Metals & Hard Materials

    2018-6-6 · 3.1. Design of micro-compression experiments in cemented carbides Micropillar compression is a relatively new experimental technique used mostly in metallic single crystal materials. Within this context, studies have discussed the accurate way to design such experiments due to experimental constraints [7,10]. To the best knowledge of the au-

    Get Price
  • Characterization of Refractory Materials Using ...

    2005-1-13 · Refractory and carbon materials are heterogeneous materials containing pores, cracks and multiphase aggregates. Such materials are generally exposed in service to thermomechanical conditions such as thermal shock, mechanical impact, abrasion and erosion, which provoke microstructural changes that affect material properties and consequently ...

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  • 2-2 Lime Kiln Principles And Operations

    2008-1-4 · common refractory system consists of bricks that are either shaped to fit the curvature of the shell or are in thin wedges that can be laid in an arch pattern in order to produce a complete shell lining. The refractory bricks are composed of special heat-resistant and chemical-attack resistant materials that

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  • Avoid Costly Refractory Repairs with Proper

    2018-10-12 · In addition, calculating a base-to-acid ratio will show if the type of refractory installed should have been selected in the first place. Refractory materials are manufactured to operate in different environments. A properly selected and installed refractory lasts longer, helps minimize shutdowns and leads to better fuel efficiency.

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  • Refractory concrete mixing recipe | Heat resistant ...

    2021-2-10 · Refractory concrete mixture ingredients recipe for mixing by hand and concrete in building pizza ovens. How to make heat resistant concrete type for buildig wood fired pizza ovens and similar applications where heat and heating is present. Heat differences in materials. Temperature differences in material, heat expansion and contraction shrinkage of edges with cooling downwards.

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  • How to Make Fireproof Concrete | Hunker

    Portion the materials into a 3:2:2:0.5 ratio so you have 3 parts gravel, 2 parts sand, 2 parts refractory cement and 0.5 parts of the hydrated lime. Follow this ratio regardless of the volume of fireproof concrete you will be making.

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