【摘要】 应用化学反应工程的原理,分析了Fe₃O₄氧化过程颗粒的热状态,表明存在着火现象,并经实验证实。研究揭示出,为保证Fe₃O₄氧化充分,必需使其处于着火状态,但工艺条件的选择还应确保颗粒表面温度低于发生明显烧结和相变温度。确定了氧化反应器适宜的操作区域。更多还原

【Abstract】 Thermal state of ultrafine Fe₃O₄ particle in the oxidization process was analysed via chemical engineering principle. The result showed that there exists ignition phenomenon and was verified by experiments. This state was neccessary for Fe₃O₄ particle to be oxidized completely, but the condition must be selected with discretion to avoid sintering of γ-Fe₃O₄ and phase transformation to α-Fe₂O₃. Optimized operation area was determined for Fe₃O₄ oxidization reactor.更多还原