余群波,袁朝新,范艳青,蒋伟.球团配碳比对红土矿直接还原镍铁颗粒长大特性研究[J].有色金属(冶炼部分),2011(8):1-3.
球团配碳比对红土矿直接还原镍铁颗粒长大特性研究
Effect of C/O Ratio of Pelletizing on Characteristics of Grain Growth of Ferronickel in Direct Reduction of Laterite
投稿时间:2017-11-10  
DOI:DOI:10.3969/j.issn.1007-7545.2011.08.001
中文关键词:  球团  配碳比  镍铁颗粒  团聚长大
英文关键词:Pelletizing  C/O ratio  Grain of ferronickel  Agglomeration and growth
基金项目:
           
作者单位
余群波 北京矿冶研究总院
袁朝新 北京矿冶研究总院
范艳青 北京矿冶研究总院
蒋伟 北京矿冶研究总院
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中文摘要:
      在还原温度1 360 ℃、还原时间3 h、球团氧化钙配比7% 的条件下,研究球团配碳比对红土镍矿回转窑直接还原生产粒状镍铁工艺中镍铁颗粒团聚长大的影响。结果表明,球团配碳比最佳值为2,此时还原产品镍铁颗粒粒径80%以上大于1 mm。球团配碳比偏低或偏高都不利于镍铁颗粒的团聚长大。球团配碳比偏低,还原产品镍铁颗粒生成;球团配碳比偏高,生成的镍铁颗粒粒径过小。
英文摘要:
      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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