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| oxidation process of magnetite pellet (【技】磁铁矿球团氧化反应过程分两个连续阶段进行。在第一阶段，化学过程占优势，不发生晶型转变，只是 Fe₃O₄ 生成了 γ-Fe₂O₃, 即生成有磁性的赤铁矿。在第二阶段，晶型转变占优势，从立方晶系转变为斜方晶系，γ- Fe₂O₃ 氧化成 α-Fe₂O₃, 磁性也随之消失。) | |||
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