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首页> 外文期刊>JOM >Recovery of Iron from Chromium Vanadium-Bearing Titanomagnetite Concentrate by Direct Reduction
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Recovery of Iron from Chromium Vanadium-Bearing Titanomagnetite Concentrate by Direct Reduction

机译:直接还原法从含铬钒钛磁铁矿精矿中回收铁

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摘要

The recovery of iron from chromium vanadium-bearing titanomagnetite concentrate was investigated by direct reduction, followed by magnetic separation. The results indicated that the metallization rate of iron can reach 98.9% at a temperature of 1200A degrees C for a reduction duration of 60 min with the addition of 16% graphite powder and 0.5% sodium oxalate. Although the addition of borax, sodium carbonate and sodium oxalate to the chromium vanadium-bearing titanomagnetite concentrate can all improve the metallization rate of iron, the effect of sodium oxalate was the best. Sodium oxalate not only increases the metallization rate of iron but also promotes the growth of metallic iron. After magnetic separating, the recovery of iron was 92.8% and the iron content of magnetic concentrate was 88.4%.
机译:通过直接还原,然后进行磁分离,研究了从含铬钒钛磁铁精矿中回收铁的方法。结果表明,加入16%的石墨粉和0.5%的草酸钠,在1200A的温度下,铁的金属化率在60分钟的还原时间内可达到98.9%。尽管在含铬钒钛磁铁矿精矿中添加硼砂,碳酸钠和草酸钠都可以提高铁的金属化率,但草酸钠的效果最好。草酸钠不仅增加铁的金属化速率,而且促进金属铁的生长。磁性分离后,铁的回收率为92.8%,磁性精矿的铁含量为88.4%。

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