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| Effect of C/O Ratio of Pelletizing on Characteristics of Grain Growth of Ferronickel in Direct Reduction of Laterite |
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Received:November 10, 2017
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| DOI：DOI：10.3969/j.issn.1007-7545.2011.08.001 |
| KeyWord:Pelletizing；C/O ratio；Grain of ferronickel；Agglomeration and growth |
| Author | Institution |
| YU Qun-bo |
北京矿冶研究总院 |
| YUAN Chao-xin |
北京矿冶研究总院 |
| FAN Yan-qing |
北京矿冶研究总院 |
| JIANG Wei |
北京矿冶研究总院 |
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| Abstract: |
| The effect of C/O ratio of pelletizing on characteristics of grain growth of ferronickel in direct reduction of laterite with rotary kiln was studied on the conditions that reduction temperature was 1 360 ℃, reduction time was 3 h, and CaO/ore ratio of palletizing was 7%. The results indicated that the optimal C/O ratio was 2, based on the reducing conditions, and more than 80% grain size of ferronickel was greater than 1 mm. It was not favorable for metal phase agglomeration and growth when C/O ratio was too high or too low. There was no grain of ferronickel generated when C/O ratio was relatively low andthe grain size of ferronickel was too small when C/O ratio was relatively high. |
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