Magnesium Aluminate Spinel Raw Materials for High
Magnesium aluminate spinel is a highly refractory material with a melting point of 2135 o C Table 1 shows a comparison of the density thermal expansion coefficient and thermal conductivity of the end members MgO Al 2 O 3 compared to the spinel phase
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Cheap Superior Quality Spinel Refractory Bricks for Sale
Magnesium aluminate spinel refractory is simply called spinel refractory which is alkali refractory is featured with spalling resistance high temperature creep resistance high refractoriness under load slag resistance and good thermal shock resistance being widely used in the lining of the ladle open hearth and the cement rotary kiln
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Advanced lightweight periclase magnesium aluminate spinel
The dense periclase magnesium aluminate spinel refractory named as DPSR was prepared by using 70 wt sintered magnesia aggregates 22 wt magnesia powder 5 2 wt spinel powder 2 0 wt corundum powder 0 8 wt α Al 2 O 3 micro powder In addition 5 wt pulp waste liquid the mass ratio of lignin sulfonate to water was 6 5 based on the dry mass was added as a binder
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Investigation of a spinel based refractory as a carrier
Investigation of a spinel based refractory as a carrier for a steel melt temperature sensor materials that were sintered at the higher temperature of 1650°C concluded that a resistance temperature detector RTD made of platinum wires embedded in an alumina rich lance could provide temperature measurements in molten steel3 Although
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Valorization of Ferronickel Slag into Refractory Materials
Preparation of refractory materials from ferronickel slag by sintering over a broad temperature range 1200°C to 1500°C with addition of sintered magnesia was explored The thermodynamic calculations indicated that the amounts of newly generated high melting point forsterite and spinel phases increase with increasing temperature The experimental analysis demonstrated that
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Fused Spinel Alumina Magnesia Spinel Spinel Refractory
Fused Spinel Alumina Magnesia Spinel is one of the most resistant refractory compounds It has great features such as low thermal working temperature outstanding refractoriness thermal stability and chemical stability Fused Spinel Alumina Magnesia Spinel is a highly recommended refractory
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Sintered MA Spinel Ceramic Industry erzkontor
Sintered spinel MgAl 2 O 4 is a synthetically produced raw material available with an excess of either Al 2 O 3 or MgO and used in many refractory applications MgO rich spinels are mainly used as alternative to magnesia chrome bricks in MgO based refractory products e g in cement rotary kilns in order to avoid the emission of Cr VI during the break out of bricks which may be dangerous for
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Alumina Magnesia Refractory CastablesRS Kiln Refractory
The characteristics of alumina magnesia spinel refractory castables are high temperature resistance strong structural spalling resistance resistance to chemical corrosion of steel slag resistance to rapid cold and rapid heat non sticking to molten steel and resistance to erosion Use the pouring vibration method for construction
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Alumina Magnesia Refractory CastablesRS Kiln Refractory
The characteristics of alumina magnesia spinel refractory castables are high temperature resistance strong structural spalling resistance resistance to chemical corrosion of steel slag resistance to rapid cold and rapid heat non sticking to molten steel and resistance to erosion Use the pouring vibration method for construction
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Fused Spinel Alumina Magnesia Spinel Spinel Refractory
Fused Spinel Alumina Magnesia Spinel is one of the most resistant refractory compounds It has great features such as low thermal working temperature outstanding refractoriness thermal stability and chemical stability Fused Spinel Alumina Magnesia Spinel is a highly recommended refractory
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Raw materials for refractory products
In addition to alumina rich spinels we also offer magnesia rich spinels which are used in magnesite refractory bricks for example High strength resistance to changes in temperature and slag resistance make alumina rich spinels particularly attractive for the iron and steel industry
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Sintered MA Spinel Refractory Industry erzkontor
The firing temperature is approx 1 800°C The briquettes have a size of approx 30mm and can be crushed and milled in order to achieve the required grain sizes Processing method
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Refractory Yuzhou Cendali Industry Co Ltd
Yuzhou Cendali Industry Co Ltd as one branch of YZSD Refractory Group which set up in Oct 2008 located in Yuzhou city Henan province China We are focus on refractory metallurgical abrasive and insulation materials in these years Depending on the advantages of rich mineral resource around us lower running cost in a small city and hard
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Chapter 3 Steel Plant Refractories
sia is then briquetted or pelletized for firing into dense refractory grade magnesia usually in shaft kilns which reach temperatures around 2000°C 3630°F The end product is sintered magnesia Fused magnesia is produced by melting a refractory grade magnesia or other magnesia precursor in an electric arc furnace
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Quality White Fused Alumina Brown Fused Alumina
Grayness Fused Spinel Chemistry Castable Refractory Aluminium Oxide Powder Synthetic Magnesia Alumina Spinel 3 40g/Cm3min Bulk Density AM50 Refractory Fused Spinel AM50 High Bulk Density Thermal Shock Resistance B4C 200 Mesh Boron Carbide Nanopowder 50nm High Temperature Refractory
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Influence of MgAl2O4 Spinel Addition on Properties of
pressed and sintered at 1500 °C with 22h soaking The refractory with 5wt MgAl 2O 4 exhibited the best properties in terms of bulk density and apparent porosity In all the refractory samples new phases were formed as a result of slag refractory and copper refractory interaction With the addition of MgAl 2O 4 spinel the corrosion resistance of
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PREMIUM ALUMINA FOR REFRACTORY APPLICATIONS
High temperature calcium aluminate cements Magnesium aluminate spinel has excellent refractory properties with a melting point of sot ichiometric spinel of 2135 °C All spinels have erties especially creep resistance of high purity sintered spinel
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Products SUNDAR METALLURGY REFRACTORY CO
Sundar Fused Spinel using alumina and high purity light burnt magnesia as main starting materials fusing in electric arc furnace and cooled is a new kind of high purity synthesized refractory raw material Sundar Fused Spinel is characterized by high bulk density good thermal shock resistance and corrosion resistance
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sia is then briquetted or pelletized for firing into dense refractory grade magnesia usually in shaft kilns which reach temperatures around 2000°C 3630°F The end product is sintered magnesia Fused magnesia is produced by melting a refractory grade magnesia or other magnesia precursor in an electric arc furnace
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Luoyang i Refractory Co Ltd
Luoyang i Refractory Co Ltd is located in Luoyang a capital of thirteen dynasties It was founded on April 24 2014 The company is mainly engaged in supplying refractory raw materials bricks castables dry ramming mix etc for industrial kilns and furnaces in high temperature industries such as iron and steel building materials
Get PriceChromium promoted preparation of forsterite refractory
The chromium promoted preparation of forsterite refractory materials from ferronickel slag was investigated by microwave sintering of the slag with the additions of sintered magnesia and 0–10 wt chromium oxide Cr 2 O 3 The thermodynamic calculations revealed that the addition of Cr 2 O 3 can promote the formations of spinel and liquid phase and maintain high content of forsterite below
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SINTERED SPINEL AL2O3 75 77 MGO 22 24 FOR REFRACTORY
Buy SINTERED SPINEL AL2O3 75 77 MGO 22 24 FOR REFRACTORY Find Details include Size Weight Model and Width about SINTERED SPINEL AL2O3 75 77 MGO 22 24 FOR REFRACTORY Make an Inquiry for SINTERED SPINEL AL2O3 75 77 MGO 22 24 FOR REFRACTORY at OKorder
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Magnesium Aluminate Spinel Ceramics Containing
for refractory applications for example in the steel in dustry because of its suitable high temperature proper ties such as high strength at elevated temperatures and high resistance to basic slags 1 2 Besides the stoichiomet riccomposition 71 8wt Al 2O 3 28 2wt MgO mag nesia rich and alumina rich magnesium aluminate spinel materials exist
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An Introduction to Refractory Aggregates
Spinel Mg Al 2 O 3 as well as dichromite MgO 2 O 3 are employed in refractory castable formulations Their melting points are 2135 °C and 2350 °C respectively At high temperature spinel is more neutral than alumina but its corrosion resistance against standard slags is high
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SUNDAR METALLURGY REFRACTORY CO LIMITED
Sundar Fused Spinel using alumina and high purity light burnt magnesia as main starting materials fusing in electric arc furnace and cooled is a new kind of high purity synthesized refractory raw material Sundar Fused Spinel is characterized by high bulk density good thermal shock resistance and corrosion resistance
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Aggregate Effects on the Thermal Shock Resistance of
Aggregate Effects on the Thermal Shock Resistance of Spinel Forming Refractory Castables M A L Braulio G B Cintra Y W Li V C Pandolfelli The performance of spinel forming refractory castables is mainly re lated to their slag corrosion and thermal shock behaviors Concern ing the thermal shock resistance the aggregate selection is an im
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Improvement of Resistance of MgO Based Refractory to
Improvement of Resistance of MgO Based Refractory to Slag Penetration by In Situ Spinel Formation HUIJUN WANG BJO¨RN GLASER and DU SICHEN MgO in situ spinel substrate was prepared at 1773 K 1500 C using colloidal alumina sus pension and coarse MgO as raw materials While the addition of 10 mass pct colloidal alumina
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A STUDY ON SPINEL FORMATION AND SINTERING
properties of the refractory body 8 The in situ spinel formed in the alumina ramming mix at service temperature has a defective structure with a tendency of tional solid solutions while in contact with molten steelmaking slag 9 When Fe2 and Mn2 cations migrate into A site of spinel they form Mg Mn Fe O Al Fe 2 O 3
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Our company s mullite products include naturally sintered mullite synthetic sintered mullite fused mullite and fused zirconium mullite It was founded on April 24 2014 The company is mainly engaged in supplying refractory raw materials bricks castables dry ramming mix etc for industrial kilns and furnaces in high temperature industries such as iron and steel building materials electricity and
Get PriceImprovement of Resistance of MgO Based Refractory to
3 spinel bricks could lead to the formation of secondary spinel CaMgSiO 4 Ca 3MgSi 2O 8 and MgO as microscopic corrosion pro ducts Recently aluminum oxide as an addition was added into MgO C refractory by Ganesh et al 12 13 They found that refractories containing in situ spinel improved ceramic bonding and corrosion resistance
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Good Flexibility Magnesia Spinel Bricks Corrosion
MgO ≥ 85 SiO2 ≤ 1 0 Bulk Density g/cm3 2 95 Na Good Flexibility Magnesia Spinel Bricks Corrosion Resistance High Temperature Brick
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Sintered MA Spinel Refractory Industry erzkontor
Sintered spinel MgAl 2 O 4 is a synthetically produced raw material available with an excess of either Al 2 O 3 or MgO and used in many refractory applications MgO rich spinels are mainly used as alternative to magnesia chrome bricks in MgO based refractory products e g in cement rotary kilns in order to avoid the emission of Cr VI during the break out of bricks which may be dangerous for
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Luoyang i Refractory Co Ltd
Luoyang i Refractory Co Ltd is located in Luoyang a capital of thirteen dynasties It was founded on April 24 2014 The company is mainly engaged in supplying refractory raw materials bricks castables dry ramming mix etc for industrial kilns and furnaces in high temperature industries such as iron and steel building materials
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China High Temperature Castable Refractory Cement
High chemical and physical stability flame retardant shock resistance insulation heat Applicable temperature between 40 °C to 80 °C
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High temperature refractory castable for heat treatment furnace lining can also be used The heat treatment furnace is composed of three parts furnace wall furnace top and furnace bottom Materials such as refractory bricks refractory castables and refractory fiber cotton are
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