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Study of the Mechanochemical Reduction of Ilmenite Concentrate by Addition of Aluminum

机译:加入铝制钛矿浓缩物的研究

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Mechanochemical reduction of ilmenite concentrate (FeTiO_3) with elemental aluminum powder was performed by high-energy milling in an industrial eccentric vibratory ball mill ESM 656-0.5 ks (Siebtechnik, Germany). The mechanochemically reduced ilmenite with various times of milling was characterized by X-ray diffraction analysis, which confirmed the presence of the Al_2O_3 and Fe_2Ti phases after 120 min of milling. Thermal analysis evidenced the completion of a mechanochemical reduction during milling. After 360 min of milling, the Fe_2Ti phase decomposed to α-(Fe,Ti) alloy, which was proven by ~(57)Fe Mossbauer spectroscopy. X-ray photoelectron spectroscopy detected the amorphous TiO phase in product after mechanochemical reduction, which is in accordance with ther-modynamic prediction. Decreasing of specific surface area after 60 min of milling resulted from growing layers of the solid products of FeTiO_3 mechanochemical reduction.
机译:通过高能铣削在工业偏心振动球磨机ESM 656-0.5 ks(Siebtechnik,Germany)中的高能铣削来进行钛铁矿浓缩物(Fetio_3)的Mechochemical减少。通过X射线衍射分析表征具有各个碾磨的机械化学减少的钛铁矿,其证实了在120分钟研磨后的Al_2O_3和Fe_2TI相的存在。热分析证明了在研磨过程中完成了机械化学减少。 360分钟铣削后,Fe_2TI相分解为α-(Fe,Ti)合金,其被证明是〜(57)FE母生菌的光谱。 X射线光电子能谱在机械化学减少后检测到产物中的无定形TiO相,这符合其型致力于动力预测。在铣削60分钟后的比表面积减小是由生长的Fetio_3机制减少的固体产物的产物产生。

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