Iron extraction from oolitic iron ore by a deep reduction process

被引：54

作者：

Li K.-Q. ^{[1
]}

Ni W. ^{[1
]}

Zhu M. ^{[1
]}

Zheng M.-J. ^{[1
]}

Li Y. ^{[1
]}

机构：

[1] Key Laboratory of the Ministry of Education of China for High-Efficient Mining, Safety of Metal Mines, University of Science and Technology Beijing

来源：

Journal of Iron and Steel Research International | 2011年 / 18卷 / 8期

基金：

中国国家自然科学基金;

关键词：

Deep reduction; Magnetic separation; Oolitic hematite;

D O I：

10.1016/S1006-706X(11)60096-4

中图分类号：

学科分类号：

摘要：

A laboratory experiment was carried out to extract iron from oolitic iron ore by a deep reduction and magnetic separation technique. The raw coal with fixed carbon of 66. 54% was used as the reductant. The iron was successfully extracted from the oolitic iron ore which otherwise is nearly impossible to be separated due to its extremely fine-grain and mosaic nature. The results showed that an iron recovery rate of 90. 78% and an iron content of 92. 53% of iron concentrate could be obtained by such a technique. The optimized roast temperature is 1200 °C and time is 60 min. The subsequent magnetic separation was performed by using a magnetic field intensity of 111 kA · m-1 and a grinding fineness less than 45 μm of 96. 19% for the sintered product. © 2011 Central Iron and Steel Research Institute.

引用

页码：9 / 13

页数：4

共 12 条

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