Model Number: RKB84 Al2O384% (size:5-12mm) Brand Name: GUNAI Key Specifications/Special Features: Refractoriness of calcined bauxite is about 1780°C (3236°F)Raw ore of our calcined bauxite is from Shanxi province, which is the biggest bauxite producing area in ChinaWe keep the raw bauxite ore in rotary kiln for more than 72 hours, Al2O3 and bulk density of our product is higher than average standard, raw ore we choose has least impuritiesAdvanced technology: using the most advanced crushingEquipment: bamako to break out small particles which can extend the life of product quality Grade Al₂O₃ (%) Fe₂O₃ (%) TiO₂ (%) CaO + MgO (%) K₂O+Na₂O (%) BD (g/cm) Water absorption Moisture RKB84 ≥84 ≤1.8 ≤4.0 ≤0.4 ≤0.4 ≥3.15 ≤5 ≤0.2