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Low temperature carbothermic reduction of Panzhihua low grade ilmenite after ball milling

机译：球磨后攀枝花低品位钛铁矿的低温碳热还原

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摘要

In this work, low temperature carbothermic reduction of Panzhihua low grade ilmenite after ball milling were investigated. The ball milling of ilmenite and graphite were processed in a ball mill. The milling process can attenuate the particle of ilmenite, and the ilmenite characteristic peak were broadened and weakened. The reduction temperature and behaviors are studied on the thermo gravimetric apparatus; lower temperature and higher reaction rate were obtained for the reduction of ilmenite with graphite after milled. The reduction temperature and times of ilmenite decreased to 1000～1025°C and 40~60min via milled for 4 or 8h; Low down the reduction temperature can eliminate the solution of Mg~(2+) and FeTiO_3 in a certain degree; the reduced ilmenite has an obvious loose structure, can favored the subsequent procedure such as leaching.
机译：在这项工作中，研究了球磨后攀枝花低品位钛铁矿的低温碳热还原。钛铁矿和石墨的球磨在球磨机中进行。研磨过程可使钛铁矿颗粒变细，钛铁矿特征峰变宽变弱。在热重仪上研究了还原温度和行为。研磨后用石墨还原钛铁矿可获得较低的温度和较高的反应速率。经研磨4或8h，钛铁矿的还原温度和还原时间分别降至1000〜1025℃和40〜60min。降低还原温度可以在一定程度上消除Mg〜（2+）和FeTiO_3的溶解。还原钛铁矿具有明显的疏松结构，可有利于后续工艺如浸出。

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