refratechnikmodelling of joint effects on refractory lining behaviour

Properties of RefractoriesIspatGuru

Dec 16 2016 · Properties for chemical stress. Chemical compositionThe chemical composition of refractories is of great importance with respect to attack by liquid slags flue dusts glass melts and vapours. Based on the behaviour during contact reactions the refractories can be categorized as (i) acid refractories (silica silicon carbide zircon cristobalite and zircon silicate etc.) (ii) basic Modelling of joint effects on refractory lining behaviour A Gasser K Terny-Rebeyrotte and P Boisse Laboratoire de Me´canique des Syste`mes et des Proce´de´s (UMR 8106 CNRS-ENSAM-ESEM) IPO-ESEM France AbstractExpansionjoints play an importantrole in refractorylinings as they reduce stresses during heating is therefore

Modelling of joint effects on refractory lining behaviour

Modelling of joint effects on refractory lining behaviour A Gasser K Terny-Rebeyrotte and P Boisse Laboratoire de Me´canique des Syste`mes et des Proce´de´s (UMR 8106 CNRS-ENSAM-ESEM) IPO-ESEM France AbstractExpansionjoints play an importantrole in refractorylinings as they reduce stresses during heating is therefore Dec 16 2016 · Properties for chemical stress. Chemical compositionThe chemical composition of refractories is of great importance with respect to attack by liquid slags flue dusts glass melts and vapours. Based on the behaviour during contact reactions the refractories can be categorized as (i) acid refractories (silica silicon carbide zircon cristobalite and zircon silicate etc.) (ii) basic

Technical Report UDC 621 . 746 . 32 681 . 3 Numerical

sis behavior of the joint material is expressed by a model of non- heat transfer between the molten iron and the ladle internal lining wall and the inter-refractory heat transfer boundary conditions were modified. Furthermore concerning shell stress by taking into ac- to the effect of brick expansion. into account to capture the key features of its mechanical behaviour. Lining and potshell interaction The nature of several dense refractory materials for instance the prebaked carbon cathode blocks is very similar to that of concretethey exhibit a quasi-brittle response. joint behaviour has a profound effect on the stiffness and the

Properties of RefractoriesIspatGuru

Dec 16 2016 · Properties for chemical stress. Chemical compositionThe chemical composition of refractories is of great importance with respect to attack by liquid slags flue dusts glass melts and vapours. Based on the behaviour during contact reactions the refractories can be categorized as (i) acid refractories (silica silicon carbide zircon cristobalite and zircon silicate etc.) (ii) basic A refractory wall is constructed by casting a first layer of refractory concrete next to the shell and while the castable is still in a castable condition carbon bricks or blocks having an interlocking or interengaging configuration on one face are pushed into the castable to cause the castable to enter the interlocking configuration and upon setting lock the bricks to the castable layer.

Selection of Proper Refractory Materials for Energy Saving

Jan 06 2012 · 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. Bentonite (/ ˈ b ɛ n t ə n ʌ ɪ t /) is an absorbent swelling clay consisting mostly of montmorillonite usually forms from weathering of volcanic ash in seawater which converts the volcanic glass present in the ash to clay minerals. Bentonite beds are white or pale blue or green in fresh exposures turning to a cream color and then yellow red or brown as the exposure is weathered

Refractory Material TestingLab Testing Services for

Porosity has a significant effect on the heat flow pattern in refractories. Cold Crushing Strength. This test helps in determining the strength of a brick. It tells us how much load that refractory can bear in cold conditions. The concept of testing CCS of a refractory material has perhaps come from metallurgy. Some areas on vessels that are prone to refractory failure are · Welded joint sections · Corners and seams · Man-way sections · Top 180° of piping · Roofs · Opening areas such as sight-ways and ports · Burner areas Charlie Chong/ Fion Zhang Although these are the most common places where refractory failure occurs it is not uncommon to

lining behaviourCORE

lining behaviour . By A Gasser Abstract. of joint effects on refractor Topics joint refractory linings multiscale approach inverse identication A refractory wall is constructed by casting a first layer of refractory concrete next to the shell and while the castable is still in a castable condition carbon bricks or blocks having an interlocking or interengaging configuration on one face are pushed into the castable to cause the castable to enter the interlocking configuration and upon setting lock the bricks to the castable layer.

Compressive behaviour of dry joints in refractory ceramic

Sep 01 2012 · Behaviour of the dry joints especially in the refractory masonry is less investigated. It is known that under compression the stiffness of the refractory lining will decrease with increasing amount of joints. At room temperature the dry joint closure has been measured for alumino-silicate refractory bricks. Apr 30 2017 · Refractories are typically classified on the based on the chemical behaviour of their constituent substances i.e. their reaction to the type of slags (Fig 1). Accordingly to this classification refractories are of three types namely (i) acid refractories (ii)

(PDF) Effects of Dry Joints on Compressive Behaviour of

Modelling of joint effects on refractory lining . behaviour. J. It provides an overview of the thermomechanical behaviour and wear of refractory lining systems and details the structural Some areas on vessels that are prone to refractory failure are · Welded joint sections · Corners and seams · Man-way sections · Top 180° of piping · Roofs · Opening areas such as sight-ways and ports · Burner areas Charlie Chong/ Fion Zhang Although these are the most common places where refractory failure occurs it is not uncommon to

Effect of Creep on Refractory Masonry Wall Subjected to

overall behavior of the structure Andreev et al. (2003). The effects of creep on the thermomechanical behavior of refractory materials are widely researched both experimentally and numerically. However the literature on the effect of creep on the overall behavior of a refractory masonry wall panels is scarcely available. microwaves irradiate the monolithic refractory lining on the inside of a ladle or RH vessel the dipoles of the raw material of the mono-lithic refractory and the moisture contained within vibrate and ro-tate producing an internal friction. The resulting frictional heat raises the temperature of the monolithic refractory. After the moisture has

Effect of Creep on Refractory Masonry Wall Subjected to

overall behavior of the structure Andreev et al. (2003). The effects of creep on the thermomechanical behavior of refractory materials are widely researched both experimentally and numerically. However the literature on the effect of creep on the overall behavior of a refractory masonry wall panels is scarcely available. Ceramics an international peer-reviewed Open Access journal. Dear Colleagues This Special Issue is dedicated to the latest research and development in refractory ceramics in the large fields of raw materials design properties damage and lifetime in terms of thermochemical and thermomechanical behavior.

USAMethod of monitoring the wear of a refractory

A process for monitoring the wear of a refractory lining of a metallurgical furnace wall during use of the furnace it is sought to improve the reliability and accuracy of the measurement comprising the following steps (1) arranging a bar of ceramic material in the wall so that the bar has an inner end at the inner face of the lining and extends to the exterior of the wall the bar thus being 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.

Steel Teeming Ladle and its Refractory LiningIspatGuru

Nov 08 2014 · The refractory materials normally used for lining are dolomite bricks magnesia chrome bricks magnesia carbon bricks high alumina bricks aluminum carbon bricks and high alumina castable. The types of refractory construction vary widely depending on the operating conditions and on the ability to cycle STLs rapidly. Modelling of joint effects on refractory lining behaviour A Gasser K Terny-Rebeyrotte and P Boisse Laboratoire de Me´canique des Syste`mes et des Proce´de´s (UMR 8106 CNRS-ENSAM-ESEM) IPO-ESEM France Abstract Expansion joints play an important role in refractory linings as they reduce stresses during heating.

A new method to determine the Young s modulus of

ductivity SiC based refractory materials pro- tect the metallic casing against high temper- ature corrosion and promote the thermal transfer from flue gas. In service the SiC re- fractory lining is exposed to thermo-chemo- mechanical loading which can lead to fre- quent degradations by means of cracking spal ing or damage of refractory materials. sis behavior of the joint material is expressed by a model of non- heat transfer between the molten iron and the ladle internal lining wall and the inter-refractory heat transfer boundary conditions were modified. Furthermore concerning shell stress by taking into ac- to the effect of brick expansion.

Improving the performance of a lime kiln burning zone

Failure of the insulation lining would cause failure of the entire lining and result in prolonged kiln stoppage and loss of production. Pyrotek solution. Pyrotek is the producer of ISOMAG® 70XCO a phosphate bonded MgO-SiO2 structural insulating board specifically designed for back up refractory lining in demanding thermomechanical applications. Brazing is a metal-joining process in which two or more metal items are joined together by melting and flowing a filler metal into the joint with the filler metal having a lower melting point than the adjoining metal.. Brazing differs from welding in that it does not involve melting the work pieces and from soldering in using higher temperatures for a similar process while also requiring

Refractory Linings ThermoMechanical Design and

This work describes the technology necessary to optimize the performance of any refractory lining. 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. A light-guide unit comprises a light-forming rod and a light-transmitting rod both rods being made from a light-permeable corrosion-resistant refractory material for instance synthetic corundum and coaxially arranged relative each other. According to the invention the length of the light-forming rod is equal to the thickness of the metallized layer of a lining and the length of the light

Thermal effects on materialsUPM

Most of the times both thermal effects (i.e. thermal response) and thermal causes (i.e. thermal load) are included in the study. Thermal behaviour of materials is a broader subject more directly related to their general thermal properties than tothermal effects of specific interest e.g. heat transfer processes or the fact that when This work describes the technology necessary to optimize the performance of any refractory lining. 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.

Thermomechanical Modelling of a Steel Ladle Using

Sep 05 2017 · 2.3 Joint closure criteria To each joint state corresponds a different periodical masonry structure and thus cor-responds a different equivalent behaviour. To determine in which state the mortarless masonry is it is necessary to have a joint closure criterion. There are two main rea-sons responsible for joint closure first the

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