Iron Extraction From Oolitic Iron Ore by a Deep Reduction Process

钢铁研究学报(英文版), 2011, 18(8): 9-13.

Iron Extraction From Oolitic Iron Ore by a Deep Reduction Process

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1.Key Laboratory of the Ministry of Education of China for High-Efficient Mining and Safety of Metal Mines,University of Science and Technology Beijing, Beijing 100083, China

2.Key Laboratory of the Ministry of Education of China for High-Efficient Mining and Safety of Metal Mines,University of Science and Technology Beijing, Beijing 100083, China

3.Key Laboratory of the Ministry of Education of China for High-Efficient Mining and Safety of Metal Mines,University of Science and Technology Beijing, Beijing 100083, China

4.Key Laboratory of the Ministry of Education of China for High-Efficient Mining and Safety of Metal Mines,University of Science and Technology Beijing, Beijing 100083, China

5.Key Laboratory of the Ministry of Education of China for High-Efficient Mining and Safety of Metal Mines,University of Science and Technology Beijing, Beijing 100083, China

基金项目: National Natural Science Foundation of China(51074036)

关键词：铁矿石 , 提取 , 磁分离技术 , 工艺 , 实验室实验 , 铁回收率 , 磁场强度 , 磨矿细度

Iron Extraction From Oolitic Iron Ore by a Deep Reduction Process

Keywords： oolitic hematite , deep reduction , magnetic separation ,

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 1 200℃ 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.

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Iron Extraction From Oolitic Iron Ore by a Deep Reduction Process

Iron Extraction From Oolitic Iron Ore by a Deep Reduction Process

参考文献