Alumina based Sintered Magnesium aluminium Spinel is made from high-quality alumina and high-quality magnesium oxide, adopting a unique technique and sintering at high temperature above 1900 C. It has the characteristics of strong corrosion resistance, good slag resistance, high thermal vibration stability and high temperature resistance. Compared with the current market products, it has higher strength and bulk density, lower porosity and water absorption, so it has better high temperature performance. Alumina based light Sintered Magnesium aluminium Spinel Adopted unique wet technique, with the characteristics of high purity, low density, low thermal conductivity and high strength,it is mainly used in new ladle castables and large cement kilns. It is a new type of energy-saving and environmental protection material and can effectively save energy.
Molecular formular  MnO
Molecular weight 70.94
CAS NO. 1344-43-0
Property  grass green or gray green color cube crystal powder of octahedron crystal. Relative density: 5.43-5.46. Melting point: 16500C. If temperature is reaching 34000C, it'll separate and sublimation. It's not soluble with water, it's soluble with acid and ammonium chloride.
MnO 60%Â Min
Mn 46%Â Min
Pb 0.010%Â Max
Cd 0.010%Â Max
As 0.010%Â Max
Ceramic Foundry Sand with the high quality bauxite as the raw material, blowing into the ball after remelting smelting, is a new type of steel casting foundry sand.It s characteristic as high temperature resistant,small amount of thermal expansion, easy collapse, good renewable performance,good casting properties, received the recognition from the cast made experts domestic and overseas. Widely used in all kinds of casting method,sand casting, special casting( casting, solid type, evaporative pattern casting, ladle flow guiding sand and so on ).Also used for shot peening, low expansion of high-temperature coated sand producing. 200mesh-270mesh used for evanescent mode coating producing. Adding 10-35% can effectively increase the air permeability, and suitable for using all kinds of casting binder.It has been used by numerous domestic and international cast iron and nonferrous metal casting production factories. Ceramic Foundry Sand Technical Specification: 1.Chemical composition
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Brown fused alumina is fused in the electric furnace with the high quality abrasive grade bauxite , coal and scrap iron as the raw material.
Brown Fused Alumina for refractory is characterized by high purity, good crystal, strong fluidity, low coefficient of linear expansion ,good corrosion-resistance and so on.
In particular, its performance-cost ratio is much higher than traditional Brown Fused Alumina,
making Brown Fused Alumina become the best aggregate and padding of brown fused alumina refractory materials.
Tabular Alumina, with the purity, do not add any additives, and firing contraction completely finished sintered alumina, alumina powder as raw material, after fine grinding, molding, drying, for ultra high temperature furnace with the temperature below the melting point of corundum, quick heat cooling fast under the condition of burning, to form a number of closely with columnar crystal, with high purity,high melting point, grains high hardness, heat load of high strength, low shrinkage, high density and low permeability, good wear resistance, good thermal shock stability etc. Tabular Alumina Usage Specification Chemical composition Bulk Density gcm3 Apparent Porosity Al2O3 Na2O Fe2O3 SiO2 Refractory Size 0 1mm 1-3mm 3-5mm 5-8mm 99.0 0.35 0.2 0.2 3.5 5.0 Fine 200 0 325 0 98.5
Ceramic Foundry Sand with the high quality bauxite as the raw material, blowing into the ball after remelting smelting, is a new type of steel casting foundry sand.It s characteristic as high temperature resistant,small amount of thermal expansion, easy collapse, good renewable performance,good casting properties, received the recognition from the cast made experts domestic and overseas. Widely used in all kinds of casting method,sand casting, special casting( casting, solid type, evaporative pattern casting, ladle flow guiding sand and so on ).Also used for shot peening, low expansion of high-temperature coated sand producing. 200mesh-270mesh used for evanescent mode coating producing. Adding 10-35% can effectively increase the air permeability, and suitable for using all kinds of casting binder.It has been used by numerous domestic and international cast iron and nonferrous metal casting production factories. Ceramic Foundry Sand Technical Specification
