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为提供回转窑法生产直接还原铁的优质球团矿，从造球到还原进行了铁精矿冷固球团和氧化球团的对比研究。结果表明，冷固球团的整体性能远优于氧化球团，应是回转窑法直接还原铁生产优先考虑的对象。
In order to provide the high-quality pellets produced by the rotary kiln method for direct reduction iron, a comparative study on cold-solidified iron pellets and oxidized pellets of iron concentrates was conducted from pelletizing to reducing. The results show that the overall performance of the cold-solidified pellets is far better than that of the oxidized pellets and should be the priority of the direct reduction iron production by the rotary kiln method.