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铝矾土砂
矿物
铝矾土砂是一种用于钢铁铸造的特殊铸造造型砂。其球形颗粒保证了非常好的流动性。由于其特殊的表面结构,与其他造型砂相比,可减少对粘结剂/固化剂的需求。铝矾土砂具有良好的耐火度(最高可达 1800°C)和较低的热膨胀率。