thermomechanical behavior of refractory concrete linings
of Refractory Linings Optimize the Thermomechanical
thermomechanical behavior of refractory linings. The performance of refractory linings is affected by many factors for instance the geometry and the material properties of linings and it is tough to directly measure the temperatures and stresses in the linings during service. Therefore
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RefractoryWikipedia
A refractory material or refractory is a material that is resistant to decomposition by heat pressure or chemical attack and retains strength and form at high temperatures. Refractories are polycrystalline polyphase inorganic nonmetallic porous and heterogeneous. They are typically composed of oxides or non oxides like carbides nitrides etc. of the following materials silicon
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Cement Lime
Thermomechanical properties are es-sential for the compensation of mechanical stresses i.e. for a stress-reduction in the refractory lining. The application of stressreducing structures is the basis for a reduc-tion of mechanical influences.
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Mahmoud ALIEarly Stage ResearcherEU Marie-Curie
The project covers all the main features of thermomechanical analysis of refractory linings including material characterization impact of corrosion on thermomechanical properties thermal shock resistance modelling of non-linear thermomechanical behaviours instrumentation of industrial devices and measurement in operation conditions.
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Observations on the Thermomechanical Behavior of
As a result of recent thermomechanical investigative studies on iron and steelmaking ladles several observations were made on refractory lining behavior unique to cylindrical refractory‐lined vessels. The investigations were directed to brick/mortar joint‐type linings subjected to transient temperatures and the resultant expansion loads.
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Thermomechanical computation of refractory lining
Thermomechanical computation of refractory lining accounting for chemical swelling Two geometries of lining tiles are modeled and a computation of one year in-service is performed. the simulations reproduce well the localization of the degradations and allow highlighting the geometry effects on the lining behavior Topics SPI.MECA
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Present Status of Thermomechanical Lining Simulation
finite element thermomechanical modelling • is a useful tool to visualize the performance of refractory linings under complicated process conditions • brings about an understanding of the thermomechanical wear mechanisms of industrial vessels and gives rise to an extended campaign life Finite element method • Types of refractory behavior
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High Grade Refractories Monolithic Cement for Cement
The selection of suitable refractory products for lining a Mesa plant requires an intensive study of the operating conditions. Depending on the lining zone the causes of wear can be very different. However the main causes of wear are thermal chemical and/or
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Cement-Free Refractory Concretes for Stress-Reduced
Sep 28 2018 · performance of a lining is the mechanical load. Thermomechanical properties are es-sential for the compensation of mechanical stresses i.e. for a stress-reduction in the refractory lining. The application of stress-0 50 100 150 200 250 300 150 250 350 450 550 650 750 850 950 sol-gel geopolymer LCC temperatur e °C LECO intensity
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Processing Variables Affecting the Thermomechanical
The mechanical reliability of monolithic refractory concrete linings for use in coal gasification process vessels must be improved if long life (>5 yrs) is to be achieved. High alumina (50–90 Al 2 O 3 ) and low silica and iron calcium aliminate bonded dense and insulating castables have a strong tendency to cracky shrink and spall during
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Refractory Linings ThermoMechanical Design and
Nov 22 2017 · It provides an overview of the thermomechanical behaviour and wear of refractory lining systems and details the structural behaviour of several classical refractory geometries highlighting the
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High Grade Refractories Monolithic Cement for Cement
The selection of suitable refractory products for lining a Mesa plant requires an intensive study of the operating conditions. Depending on the lining zone the causes of wear can be very different. However the main causes of wear are thermal chemical and/or
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Modeling of Thermal Stress Cycling in Refractory Materials
experimentally validated thermomechanical model that considers refractory strength degradation Schematic representation of the thermal stress distribution in a concrete lining with various temperature gradients 6 (a) Thermal profile in the lining after various times. Predicted damage of the refractory lining after 3 months of
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Creep of refractory concretesIowa State University
Refractory concretes are classified according to ASTM C "Standard Classification of Castable Refractories" 7 . In this work the term "refractory concrete" will be defined as a high temperature aggregate bonded by a hydraulically setting calcium aluminate cement. The aggregate is the major portion of a refractory concrete
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A Simplified Approach to the Contact in Thermo-mechanical
mechanical behavior of refractory blocks is essential for design and material choice. A tool is needed for fast and efficient computation of thermo-mechanical state of refractory linings under various conditions. Standard simulation models and their solutions suffer as the linings are composed of many refractory blocks in contact.
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(PDF) Numerical Simulation of the Thermomechanical
The thermomechanical behaviour of refractory bricks in the hearth was modelled by a coupled heat transfer and stress analysis. The commercial FEM package ANSYS® was used for this purpose. A two
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Simulations of thermomechanical behavior of composite
Jan 01 2001 · Simulations of thermomechanical behavior of composite refractory linings 1. Introduction. The use of substances at high temperature requires the utilization of refractory linings in order to 2. The components of the refractory linings and their mechanical behavior. In this work we consider a
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Refractory StandardsASTM International
Refractory Standards. ASTM s refractory standards are instrumental in specifying testing and evaluating the chemical physical and mechanical properties of various materials and products made of refractory. These materials which are commonly made from the oxides of aluminum (alumina) silicon (silica) magnesium (magnesia) and calcium
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A Simplified Approach to the Contact in Thermo-mechanical
Analysis of Refractory Linings Y. Kaymak 1 1VDEh-Betriebsforschungsinstitut Sohnstr. 65 40237 Düsseldorf/Germany yalcin.kaymak bfi.de Abstract The geometrical design and material choice for a refractory lining requires a complete understanding of its thermo-mechanical behavior. Design engineers clearly
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Thermomechanical Aspects of Joints Taylor Francis Group
The joint compressive stress-strain behavior is an inherent part of defining the compressive stress-strain behavior of refractory shapes. The more joints the lining has the greater the influence the joints will have on the lining behavior. One of the beneficial aspects of joints is their expansion allowance behavior.
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Thermomechanical Modelling of Refractory Mortarless
The developed material model has been implemented in a commercial finite element software and then used to analyze the thermomechanical behavior of refractory masonry walls. The numerical model has been validated by comparing the numerical results
Chat OnlineThermomechanical Aspects of Joints Taylor Francis Group
The joint compressive stress-strain behavior is an inherent part of defining the compressive stress-strain behavior of refractory shapes. The more joints the lining has the greater the influence the joints will have on the lining behavior. One of the beneficial aspects of joints is their expansion allowance behavior.
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Refractory Linings ThermoMechanical Design and
It provides an overview of the thermomechanical behaviour and wear of refractory lining systems and details the structural behaviour of several classical refractory geometries highlighting the critical regions of each lining system where high stress is most likely to create fractures.
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A Simplified Approach to the Contact in Thermo-mechanical
mechanical behavior of refractory blocks is essential for design and material choice. A tool is needed for fast and efficient computation of thermo-mechanical state of refractory linings under various conditions. Standard simulation models and their solutions suffer as the linings are composed of many refractory blocks in contact.
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Processing Variables Affecting the Thermomechanical
The mechanical reliability of monolithic refractory concrete linings for use in coal gasification process vessels must be improved if long life (>5 yrs) is to be achieved. High alumina (50–90 Al 2 O 3 ) and low silica and iron calcium aliminate bonded dense and insulating castables have a strong tendency to cracky shrink and spall during
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THERMAL CONDUCTIVITY OF REFRACTORY INSULATING CONCRETE
Thermomechanical behavior of refractory-concrete-lined vessels Technical Report Tseng T M A constitutive model applicable to dense and insulating refractory concretes used for coal gasification vessel linings is developed.
Chat OnlineHigh Grade Refractories Monolithic Cement for Cement
The selection of suitable refractory products for lining a Mesa plant requires an intensive study of the operating conditions. Depending on the lining zone the causes of wear can be very different. However the main causes of wear are thermal chemical and/or
Chat OnlineThermomechanical Modelling of Refractory Mortarless
The developed material model has been implemented in a commercial finite element software and then used to analyze the thermomechanical behavior of refractory masonry walls. The numerical model has been validated by comparing the numerical results
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Thermomechanical Behavior of Refractory Concrete Linings
A numerical analysis model was developed for predicting the behavior of dual‐component refractory‐lined coal‐gasification vessels. The temperature‐dependent constitutive law
Chat OnlineRefractory Linings ThermoMechanical Design and
It provides an overview of the thermomechanical behaviour and wear of refractory lining systems and details the structural behaviour of several classical refractory geometries highlighting the
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