Precision Casting Bauxite
Overview
Precision Casting Bauxite is a specialized form of calcined bauxite processed for high-temperature applications in precision casting. It is distinguished by its high alumina content (typically 80-85%) and controlled impurities, ensuring consistent performance in mold and core production. Unlike standard bauxite, this grade undergoes selective mining and calcination to optimize its refractory properties. It is a cornerstone material in investment casting, particularly for aerospace and turbine blade components where dimensional accuracy is critical.
Physical and Chemical Properties
The material’s high alumina content directly correlates with its refractoriness, enabling it to withstand temperatures exceeding 1700°C. Its low iron oxide (<2%) and silica content minimize unwanted reactions during metal pouring. Particle size distribution is tightly controlled (commonly 100-325 mesh) to ensure optimal mold permeability and surface finish. The calcination process reduces LOI (loss on ignition) to <0.5%, preventing gas defects in castings.
Main Applications
Primary use is in ceramic shell molds for investment casting, where it provides dimensional stability and reduces shell cracking. It is also blended with zircon flour for high-performance face coats. Secondary applications include refractory bricks for furnace linings and ceramic filters for molten metal filtration. In the automotive sector, it is used for precision cast turbocharger housings.
Safety and Storage
While non-hazardous, prolonged exposure to dust may cause respiratory irritation. Store in moisture-proof packaging to prevent hydration, which can alter particle bonding properties. Bulk storage silos should incorporate vibration systems to prevent compaction. Shelf life is indefinite if kept dry, but agglomeration may occur after 12 months in humid climates.
B2B Procurement Guide
Key specifications to verify include: Al2O3 ≥82%, Fe2O3 ≤1.5%, and median particle size of 50-70 microns for shell molds. Request certified test reports for trace element analysis (e.g., TiO2, CaO). For large orders, negotiate pricing based on annual volume commitments. Consider FOB pricing from Chinese suppliers, which typically offers 20-30% cost advantage over European sources. Always audit supplier calcination facilities to verify temperature control capabilities.
Related Manufacturers
- 主营：耐火材料、硅藻土粉、白云石粉、铝矾土、贝壳粉、高岭土、滑石粉、石英砂、金刚砂、碳酸钙、玻璃微珠、石墨粉、远红外粉、石英粉、麦饭石粉、沸石粉、重钙粉、轻钙粉、高纯负离子液、膨润土、赤石脂粉、鹅卵石雨花石、彩色石子、活性白土、膨胀石墨、硅酸锆
- 主营：磁粉、铁粉、铁砂、铝矾土、硅藻土、膨润土、轻钙、重钙、氢氧化钙、氧化钙、煅烧滑石粉、膨润土颗粒、硅灰、活性白土、萤石粉、石英粉、高岭土、沸石粉、煅烧高岭土、莫来砂、珍珠岩粉、玻璃粉、贝壳粉、远红外粉、凹凸棒土
- 主营：玻璃粉、火山石粉、云母粉、铝矾土、云母片、电气石粉、陶瓷砂、石英粉、莫来石粉、硅酸铝粉、轻钙粉、珍珠岩颗粒、透明粉、重钙粉、煅烧高岭土、蛭石、玻璃鳞片、煅烧贝壳粉、硅灰石粉、高硅滑石粉、低硅滑石粉、全加密硅灰、半加密硅灰
- 主营：云母、蛭石、轮胎粉、铝矾土、彩砂、蛭石板、阻火模块、石英砂、无石棉矿物复合纤维、木质纤维、海泡石
- 主营：石墨、膨胀石墨、导电石墨粉、铝矾土、防静电墨粉、阻燃石墨粉、鳞片石墨粉、超细石墨粉、云母、云母片、茶色云母片、云母粉、电气石、电气石粉、电气石颗粒、天然云母片、透明云母片、导热石墨、绝缘云母片、耐高温云母、云母板、岩片、贝壳片、膨润土、钙基膨润土、纳基膨润土
- 主营：贝壳粉、硅灰、重钙、铝矾土、轻钙、碳酸钙粉、膨润土、煤矸石粉、硅酸铝粉、硅酸铝纤维、滑石粉、珍珠岩粉、蛭石粉、方解石粉、硅藻土、玻璃粉、氧化镁粉、白云石粉、火山石粉、全加密硅灰、半加密硅灰
- 主营：麦饭石粉、滑石粉、沸石粉、铝矾土、氧化钙、膨润土、白云石粉、橡胶粉、石英粉、硅微粉、碳酸钙、石墨、硅藻土、抗菌粉、氢氧化钙、消石灰、陶土、活性白土、金刚砂、木粉、磁粉、海泡石粉、二氧化硅、高岭土、负离子粉
- 主营：重钙粉、白云石、石英砂、铝矾土、金刚砂、高岭土、陶土粉、重晶石粉、石英粉、膨润土、橡胶粉、麦饭石粉、蛭石、滑石粉、轻质碳酸钙、凹凸棒土、长石粉、粘土球、白云石粉、硅微粉、珍珠岩粉、偏高岭土粉、氧化钙、氢氧化钙
- 主营：高岭土、重质碳酸钙、碳酸钙、铝矾土、滑石粉、海泡石、石灰石、硅藻土、一级矿粉、萤石矿石、活性钙、沉淀硫酸钡、氢氧化钙、氧化钙、膨润土、透明粉、硅酸铝粉、贝壳粉、彩砂、轻钙、萤石粉、水镁石、矿粉、铸石粉、浴沙、金玉明砂
- 主营：托玛琳牌、负离子牌、麦饭石球、铝矾土、负离子球、远红外粉、远红外球、砭石粉、膨润土、陶瓷片、电气石粉、陶瓷粉、陶瓷球、热敷球、抗菌球、电气石球、电气石片、五行牌、托玛琳吊坠、托玛琳片、托玛琳原石、富氢球、碱性球、小分子球、阴离子球
- 主营：磁粉、碳酸钙、沸石粉、铝矾土、介质粉、凹凸棒土、硅藻土、红土黄土、膨润土、粉煤灰、石英砂、膨润土猫砂、矿渣粉、硅灰硅微粉、活性白土、萤石粉、高岭土、珍珠岩粉、陶土、铁砂、贝壳粉、远红外粉、煤粉、花生饼、木粉、钛白粉
- 主营：灭火岩粉、石墨粉、远红外陶瓷粉、铸造铝矾土、电气石粉、麦饭石、硅酸铝粉、碳酸钙、火山石、膨润土、高岭土、贝壳粉、云母片、岩片、玻璃粉、陶瓷粉、陶瓷砂、蒙脱石粉、白垩土、白云母粉、硅灰、水洗高岭土、天然云母片、导电石墨粉、沸石粉、麦饭石粉
- 主营：碳酸钙、高岭土、滑石粉、铝矾土、负离子、金刚砂、贝壳粉
- 主营：蛭石、珍珠岩、陶粒、铝矾土、稻壳炭、树皮、硅藻土、锆英粉、锆英砂、火山石、高岭土、膨润土、水洗石子、营养土、景观石、棕刚玉、玻璃砂、玻璃微珠、鹅卵石、分目砂、椰糠、绿沸石、品势泥炭土、水苔、豆石
- 主营：中性炉衬、耐火炉料、酸性打炉料、铝矾土、硅质炉衬料、石英砂捣打料、酸性铸铁炉衬料、透热炉打结料、线圈胶泥红泥、中性打炉料、酸性干振料、线圈浆料红泥、加热炉浇灌料、炉衬材料、捣打料浇注料、铁水包钢水包捣打料、可塑快速修补料、可塑性修补料、硅质打炉料、刚玉干振干捣料、中性炉料、干振料、干打料、打炉料、干捣料、机制木炭果木炭