Series Castable for Ladle LingingRongsheng Refractory
· Series castables for Ladle Lining is mainly prepared by corundum magnesia and spinel and has properties of high strength erosion and thermal shock resistance features The product is mainly used as the lining for the high-temperature furnace such as ladle and foundry ladle
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How To Choose Refractory Castable Flexural Resistance Is
Refractory castables can be used to produce overall linings in all types of furnaces and kilns. Refractory castables are derived from a variety of raw materials including cement clinker andalusite bauxite mullite refractory massive iron oxide silicon carbide and perlite and vermiculite can be used for thermal insulation/thermal insulation.
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High Alumina Refractory BallRongsheng Refractory
· High Alumina Refractory Ball Applications Refractory balls alumina ceramic ball application in chemical fertilizer plant of high and low temperature transformation furnace reformer hydrogenation desulfurization tank and methanation furnace dispersed liquid and supporting covering and protecting catalyst role can also be used in heating furnace of iron and steel industry and the
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Optimization of Properties for Alumina-Spinel Refractory
Aiming at optimizing properties of alumina-spinel refractory castables coarse corundum particles were replaced partially with the particles of a novel porous multi-component CMA (CaO-MgO-Al2O3) aggregate in the same size. Properties including the bulk density apparent porosity strength slag corrosion resistance thermal shock resistance and thermal fatigue resistance of alumina-spinel
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PREMIUM ALUMINA FOR REFRACTORY APPLICATIONS
· Magnesium aluminate spinel has excellent refractory properties with a melting point of sot ichiometric spinel of 2135° C. All spinels have the ability to substitute large percentages of one or both of the cationic site components (Al3 or Mg2 ) with other
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(PDF) Thermomechanical Behavior of High-Alumina Refractory
There- fore knowledge of the thermomechanical behavior of such mate- M ONOLITHIC calcium aluminate-bonded refractory castables that contain magnesium spinel are being used increasingly more in steel-making applications such as the linings of tundishes rials is very important to prevent structural spalling or extensive cracking.4 However few
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Effect of titanium oxide addition on magnesia refractories
· Magnesia products are an important group of refractory materials which have been produced for many years. Magnesia products owe their positive properties to their main chemical component i.e. magnesium oxide (periclase MgO) which is characterised by extremely high refractoriness (melting point ca 2850 °C) 1 2 and resistance to the corrosive attack of iron
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(PDF) Thermomechanical Behavior of High-Alumina Refractory
There- fore knowledge of the thermomechanical behavior of such mate- M ONOLITHIC calcium aluminate-bonded refractory castables that contain magnesium spinel are being used increasingly more in steel-making applications such as the linings of tundishes rials is very important to prevent structural spalling or extensive cracking.4 However few
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Evolution of an alumina-magnesia/self-forming spinel
INTRODUCTION. Magnesium aluminate spinel (MgAl 2 O 4) is considered an excellent material for refractory products due to its outstanding high temperature mechanical chemical and thermal properties.Spinel is artificially produced because there is little natural occurrence thus numerous studies have been presented for the synthesis of magnesium aluminate spinel (MgAl 2 O 4) 1-9 .
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The Optimisation of Magnesia Containing Castables
Studies by Kantani and Imaiida 3 have shown that the best compromise between ladle slag penetration and corrosion resistance can be achieved when the castable contains about 20–40 magnesium aluminate spinel after firing. The spinel can either be added as pre-reacted spinel or formed in situ by adding magnesia to the castable. Furthermore it was discovered that the penetration resistance
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The role of hydraulic binders on magnesia containing
· 1. Introduction1.1.. Magnesia containing refractory castablesMagnesia containing castables present high refractoriness and alkaline slag and thermal shock resistances due to their high melting point (2800 °C) and ability to generate in situ spinel (MgAl 2 O 4) when combined with Al 2 O 3.Nevertheless magnesia can also easily react with water forming magnesium hydroxide (Mg(OH) 2 or brucite
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PREMIUM ALUMINA FOR REFRACTORY APPLICATIONS
· REFRACTORY AGGREGATES REFRACTORY AGGREGATES Magnesium Aluminate Spinels Magnesium aluminate spinel has excellent refractory properties with a melting point of sot ichiometric spinel of 2135 °C. All spinels have the ability to substitute large percentages of one or both of the cationic site components (Al3 or
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Optimization of Properties for Alumina-Spinel Refractory
Aiming at optimizing properties of alumina-spinel refractory castables coarse corundum particles were replaced partially with the particles of a novel porous multi-component CMA (CaO-MgO-Al2O3) aggregate in the same size. Properties including the bulk density apparent porosity strength slag corrosion resistance thermal shock resistance and thermal fatigue resistance of alumina-spinel
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High Alumina low Cement CastableRongsheng Refractory
· A certain amount of delayed retarder is prepared. High strength low cement refractory castables castables with a cement addition of 3-8 and a CaO content of between 1-3 are called low cement refractoriness castable with a CaO content of less than 1.0 are referred to as ultra-low cement castables. High Alumina low Cement Castable Features. 1.
Get PriceEffect of titanium oxide addition on magnesia refractories
· Magnesia products are an important group of refractory materials which have been produced for many years. Magnesia products owe their positive properties to their main chemical component i.e. magnesium oxide (periclase MgO) which is characterised by extremely high refractoriness (melting point ca 2850 °C) 1 2 and resistance to the corrosive attack of iron
Get PriceThe role of hydraulic binders on magnesia containing
· 1. Introduction1.1.. Magnesia containing refractory castablesMagnesia containing castables present high refractoriness and alkaline slag and thermal shock resistances due to their high melting point (2800 °C) and ability to generate in situ spinel (MgAl 2 O 4) when combined with Al 2 O 3.Nevertheless magnesia can also easily react with water forming magnesium hydroxide (Mg(OH) 2 or brucite
Get PriceREFRACTORY 96 Proceedings of the International
· 14. Magnesia Spinel and Dolomite RefractoriesThe Chrome -Free Alternative for High Temperature Industrial Applications 388 U. Bongers J. Hartenstein R. Prange J. Stradtmann Section III Raw Materials for Refractories 1. Developments in the Magnesia Industry in
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Corrosion of MgO-C with Magnesium Aluminate Spinel
For more than 20 years the sidewalls and bottom of steel ladles have been lined with carbon-bonded magnesia (MgO-C) and magnesia-alumina bricks (MAC). The alumina raw materials react with magnesia forming a spinel which decreases open porosity and slag infiltration. The amount grain size and chemistry of the added spinel impact the properties of spinel-containing MgO-C. Corrosion tests
Get PriceFused 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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An Introduction to Refractory Aggregates
· Magnesia has a propensity to react with water to form magnesium hydroxide (Mg(OH) 2) thus magnesia-based castables must be stored carefully and exposure to steam must be avoided. Dolomite. Dolomite is a double salt of MgCO 3 and CaCO 3. The CaO.MgO system contains mixtures that do not melt below 2300 °C and are highly refractory.
Get PriceHow To Choose Refractory Castable Flexural Resistance Is
Refractory castables can be used to produce overall linings in all types of furnaces and kilns. Refractory castables are derived from a variety of raw materials including cement clinker andalusite bauxite mullite refractory massive iron oxide silicon carbide and perlite and vermiculite can be used for thermal insulation/thermal insulation.
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A novel approach for magnesia hydration assessment in
· Magnesium oxide (MgO) or magnesia is one of the most important raw materials in the refractory industry. Because of its high refractoriness (melting point of 2800 °C) and corrosion resistance the presence of this oxide in refractory compositions promotes an increase in the performance of pre-shaped linings for steel production .
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A novel approach for magnesia hydration assessment in
· Magnesium oxide (MgO) or magnesia is one of the most important raw materials in the refractory industry. Because of its high refractoriness (melting point of 2800 °C) and corrosion resistance the presence of this oxide in refractory compositions promotes an increase in the performance of pre-shaped linings for steel production .
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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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Effects of SnO 2 Addition on the Properties of Alumina
· Alumina-magnesia refractory castables have been widely used in the wall and bottom impact pad of steel ladles. The properties of alumina-magnesia refractory castables with SnO 2 additive in 05 wt range were investigated. The phase composition microstructure physical and mechanical properties of these refractories were studied.
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Optimization of Properties for Alumina-Spinel Refractory
· Alumina-magnesia and alumina-spinel castables have been widely used in steel ladle linings below the slag zone the well block of purging plugs and injection lances due to their excellent slag resistance and mechanical properties 1 2 . In view of the increasing ratio of scrap to steel higher working temperature and prolonged refining time the enhanced properties of materials especially for the slag
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High Alumina Refractory BallRongsheng Refractory
· High Alumina Refractory Ball Applications Refractory balls alumina ceramic ball application in chemical fertilizer plant of high and low temperature transformation furnace reformer hydrogenation desulfurization tank and methanation furnace dispersed liquid and supporting covering and protecting catalyst role can also be used in heating furnace of iron and steel industry and the
Get PricePREMIUM ALUMINA FOR REFRACTORY APPLICATIONS
· REFRACTORY AGGREGATES REFRACTORY AGGREGATES Magnesium Aluminate Spinels Magnesium aluminate spinel has excellent refractory properties with a melting point of sot ichiometric spinel of 2135 °C. All spinels have the ability to substitute large percentages of one or both of the cationic site components (Al3 or
Get PricePREMIUM ALUMINA FOR REFRACTORY APPLICATIONS
· REFRACTORY AGGREGATES REFRACTORY AGGREGATES Magnesium Aluminate Spinels Magnesium aluminate spinel has excellent refractory properties with a melting point of sot ichiometric spinel of 2135 °C. All spinels have the ability to substitute large percentages of one or both of the cationic site components (Al3 or
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