Product Name: Refractory Calcined Bauxite for Castable Model NO.: RKB75 Material: Alumina Block Shape: Block Type: Refractory Material Feature: Long Time Materials Refractoriness (?): 1770< Refractoriness< 2000 Fe2o3: 2.2% Bulk Density: 2.75 g/cm3 Al2O3: 75% Grain Size: 0-1-3-5mm Powder: 150mesh,200mesh,325mesh Trademark: sinocean Transport Package: Jumbo Bags Specification: Alumina content 75% Origin: China HS Code: 26060000 Product Description Refractory grade bauxiteCalcined bauxite is produced by sintering/calcining of low iron, low alkali containing raw bauxites at temperatures of 1600 - 1800 degree Celsius. In this calcination process the high refractory mineral phases corundum and mullite are formed. Refractory grade bauxite has high refractoriness, good mechanical strength and moderate slag resistance.Therefore calcined bauxite is one of the most important raw materials for the production of shaped and unshaped refractories for the steel industry, foundries, glass and cement plants. Application Refractory applications remain the premiere non-metal market for calcined bauxite which is mixed with binders and pressed, extruded, cast and shaped into a variety of forms that are then dried and transfered to kilns for firing. The calcined refractory grade bauxite is also used in unfired monolithic refractories.It should be noted that another source of materials suitable for refractory use is the calcined bauxite used to produce brown fused alumina, which has higher mechanical and chemical corrosion resistance than other high alumina refractory raw materials. SINOCEAN Available Refractory Grade Bauxite Item SNR90 SNR88 SNR87 SNR85 SNR80 Al2O3(%) 90.0min 88.0min 87.0min 85.0min 80.0min SiO2(%) 3.5max 5.5max 7.0max 8.0max 10.0max Fe2O3(%) 1.5max 1.6max 1.8max 2.0max 2.5max TiO2(%) 3.8max 4.0max 4.0max 4.0max 4.0max CaO+MgO 0.35max 0.40max 0.40max 0.40max 0.50max K2O+Na2O 0.35max 0.40max 0.40max 0.40max 0.50max B.D(gm/cc) 3.35min 3.25min 3.20min 3.10min 2.90min Moisture 0.3max 0.3max 0.3max 0.4max 0.5max Available grain size0-1mm;1-3mm;3-5mm;5-8mm;16-30mesh; 30-60mesh; 120mesh;200mesh; 325meshor as customer's requirement.Package1MT Jumbo bagStandard exporting package for sea transportation or air deliverySpecial packing requirement is acceptable