MECHANISMS OF WEAR OF REFRACTORY MATERIALS IN SNORKELS OF
an analysis of the causes of failure in high chrome oxide refractory materials from slagging gasifiers Bennett J. / Kwong K.-S. / Powell C. / Thomas H. / Krabbe R. 2006 print version
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Post-mortem analysis of alumina-magnesia-carbon refractory
· During the service of the ladle when the secondary metallurgy takes place (i.e. the adjustment of the steel composition) refractories of the working lining are exposed to very aggressive conditions the high temperature of the process the oxidant atmosphere that prevails because it is an open vessel and contact with corrosive agents especially the liquid slag among others.
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THERMAL MECHANICAL STRESS ANALYSIS OF LADLE
· stress of ladle lining and the tensile stress of the shell are very large in the course of working. Under the action of such a large thermal stress the ladle lining is crushed and broken. Finally the lining is broken and eroded by molten steel 3 . V.K. Orlov analyzed the reason of ladle lining damage. The ladle
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Numerical-experimental analysis of thermal shock
Numerical-experimental analysis of thermal shock damage in refractory materials Summary Coarse grain refractory materials are used in installations for iron and steel-making operating at temperatures as high as 1800 °C. A major cause leading to early failure of such installations is the wear of the refractory material due to fatal thermal
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Exploration of new quality refractory to improve hot metal
In Tata steel all the shop follows almost similar lining maintenance practises. Each ladle has mandatorily three layers of refractory lining namely working lining intermediate lining and permanent lining ().Working lining directly comes in contact with the hot metal experiences temperature up to 1600 C. In the working lining ASC quality bricks are used except sprout area.
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Analysis of the development of shaped Wanhao Refractory
measures to solve the problems of tundish refractory Oxidation of ladle slag line brick Several methods of hanging furnace top with anchor brick The main function of refractory lining in reheating furnac Risk of calcium carbide furnace
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MECHANISMS OF WEAR OF REFRACTORY MATERIALS IN SNORKELS OF
an analysis of the causes of failure in high chrome oxide refractory materials from slagging gasifiers Bennett J. / Kwong K.-S. / Powell C. / Thomas H. / Krabbe R. 2006 print version
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Reasons for the damage of ladle purging plug
Reasons for the damage of ladle purging plug There are four main reasons for the damage of air-permeable bricks thermal stress mechanical abrasion mechanical stress and chemical erosion. 1.In actual production the baking temperature of the ladle is 1000°C and the temperature of molten steel reaches 1600°C.
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ladle slide plate and the advantages and disadvantages of
Thermal chemical erosion is another major cause of skateboard damage. Refractory materials for skateboards come into contact with high-temperature molten steel and slag during use and a series of chemical reactions occur causing chemical corrosion.
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Analysis of Damage Causes of Refractory Material in Ladle
· Chemical attack the acidic substances (such as silica) in iron oxide or slag react with the lining of refractory materials. There are chemical reactions between iron oxide silica calcium oxide and magnesium oxide. These reactions make the ladle lining. The change to slag causes damage to the refractory material.
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A statistical and post-mortem study of wear and
· Furthermore an analysis was also performed on the region between the electrofused MgO grains (slag shown in Fig. 7) and it was found to have the typical composition of slag which confirms the above referring to the attack of the grain of the refractory material by slag. This refractory wear mechanism of the slag line seems to be the
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THERMAL MECHANICAL STRESS ANALYSIS OF LADLE
· stress of ladle lining and the tensile stress of the shell are very large in the course of working. Under the action of such a large thermal stress the ladle lining is crushed and broken. Finally the lining is broken and eroded by molten steel 3 . V.K. Orlov analyzed the reason of ladle lining damage. The ladle
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steelLadle metallurgy Britannica
· steelsteelLadle metallurgy The carrying out of metallurgical reactions in the ladle is a common practice in practically all steelmaking shops because it is cost-efficient to operate the primary furnace as a high-speed melter and to adjust the final chemical composition and temperature of the steel after tapping. Also certain metallurgical reactions for reasons of equipment design and
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Analysis on the Damage of Refractory Brick Lining for Lime
· Analysis of Damage Mechanism of Lime Shaft Kiln Lining (1) The upward movement of the calcining belt causes the preheating zone to withstand high temperature reactions. One of the reasons is the imbalance of atmosphere. The second is excessive wind. Third the ash output is small or the ash output interval is too long.
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Understanding refractory failUres in fired heaters a guide
· end-users and refractory material suppliers can help all involved to better understand the details required to significantly reduce the likelihood of refractory failures. in this article energy sK and Morgan examine some of the most common causes of refractory failure and what engineers can do to both fix a problem and avoid it in the future.
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Analysis of Erosion of Mg-c Bricks on 180t Ladle Slag Line
· The new technologies required to produce high value-added varieties of steel also put forward higher requirements on the life of ladle mg-c bricks. Skip to content 86 411 Building 8 Yintian South Park Yida Chuntian Ganjingzi District Dalian 116000 China
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Understanding Refractory Failure—A New Perspective
Refractory has always been an integral part of steam-generating boilers. In the steam-generating industry refractory materials are used for filling gaps and openings to help keep the fire inside the fire box for lining ash hoppers (wet and dry) that collect ash and slag and for the protection of lower furnace wall tubes inside fluidized bed cyclone-fired or refuse-derived fired boilers.
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Analysis on the Damage of Refractory Brick Lining for Lime
· Analysis of Damage Mechanism of Lime Shaft Kiln Lining (1) The upward movement of the calcining belt causes the preheating zone to withstand high temperature reactions. One of the reasons is the imbalance of atmosphere. The second is excessive wind. Third the ash output is small or the ash output interval is too long.
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Analysis of the development of shaped Wanhao Refractory
measures to solve the problems of tundish refractory Oxidation of ladle slag line brick Several methods of hanging furnace top with anchor brick The main function of refractory lining in reheating furnac Risk of calcium carbide furnace
Get PriceA Method for Steel Ladle Lining Optimization Applying
· A steel ladle of voestalpine was the object used for lining concept optimization. Figure 1a depicts the simplified two-dimensional model representing a horizontal cut through the slag-line position in the upper part of the steel ladle. The model consists of a two half-brick working lining a monolithic permanent lining a fiber board and a steel shell.
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Damage mechanism of refractories used in steelmaking
High quality alloy steel is mainly smelted in electric furnace steelmaking in China. In recent years with the continuous change of EAF steelmaking process including higher operating temperature larger and larger capacity of EAF stronger temperature sudden change increasing quality of alloy steel etc. higher requirements are put forward for refractories.
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ladle slide plate and the advantages and disadvantages of
The skateboard of this material uses low expansion rate Al2O3-SiO2-ZrO2 raw materials made of oblique zircon mullite corundum etc. as the main crystal phase a refractory material characterized by carbon bonding aluminum-carbon skateboard It has quite good performance and applicability but the cracking and sliding surface wear in repeated
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Exploration of new quality refractory to improve hot metal
In Tata steel all the shop follows almost similar lining maintenance practises. Each ladle has mandatorily three layers of refractory lining namely working lining intermediate lining and permanent lining ().Working lining directly comes in contact with the hot metal experiences temperature up to 1600 C. In the working lining ASC quality bricks are used except sprout area.
Get PriceAnalysis of Erosion of Mg-c Bricks on 180t Ladle Slag Line
· The new technologies required to produce high value-added varieties of steel also put forward higher requirements on the life of ladle mg-c bricks. Skip to content 86 411 Building 8 Yintian South Park Yida Chuntian Ganjingzi District Dalian 116000 China
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Corrosion mechanism and kinetic behaviour of refractory
· factors. Corrosion of the lining material in contact with slag during ladle refining of steel is usually described in three major categories • Dissolution or diffusion which is a chemical process by which the refractory material is continuously dissolved • Penetration by which the slag penetrates into the refractory and causes
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Thermal crack growth modeling in refractory linings of
· mechanical analysis methods. The initial data for crack size calculation and the moment of crack appearance obtaining are 3-dimentional temperature and stress fields in material of refractory lining of metallurgical installation calculated with finite elements method. A standard refractory material of MgO-Cr2O3 system used
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Understanding Refractory Failure—A New Perspective
Refractory has always been an integral part of steam-generating boilers. In the steam-generating industry refractory materials are used for filling gaps and openings to help keep the fire inside the fire box for lining ash hoppers (wet and dry) that collect ash and slag and for the protection of lower furnace wall tubes inside fluidized bed cyclone-fired or refuse-derived fired boilers.
Get Price
Reasons For Refractory Material Damage Of Converter
Reasons For Refractory Material Damage Of Converter Working Lining. The mechanism of refractory material damage in converter working lining is very complicated generally speaking under the combined action of physical chemical and thermal stress conditions oxygen converter will endure mechanical abrasion scouring molten erosion thermal pall etc and finally causes the damage of working
Get PriceTHERMAL MECHANICAL STRESS ANALYSIS OF LADLE
· stress of ladle lining and the tensile stress of the shell are very large in the course of working. Under the action of such a large thermal stress the ladle lining is crushed and broken. Finally the lining is broken and eroded by molten steel 3 . V.K. Orlov analyzed the reason of ladle lining damage. The ladle
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