| 粉煤灰硫酸化焙烧提取氧化铝的研究 |
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| 引用本文： | 范艳青,蒋训雄,汪胜东,冯林永,蒋伟.粉煤灰硫酸化焙烧提取氧化铝的研究[J].铜业工程,2010(2):34-38,33. |
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| 作者姓名： | 范艳青 蒋训雄 汪胜东 冯林永 蒋伟 |
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| 作者单位： | 北京矿冶研究总院,北京,100044 |
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| 摘 要： | 研究了粉煤灰硫酸化焙烧提取氧化铝的工艺。对焙烧温度、时间、酸矿比、粒度等影响因素进行了研究,确定最佳工艺条件:粉煤灰粒度为-400目占95%以上,焙烧温度320℃,时间2h,酸矿比1.6,在此条件下粉煤灰中氧化铝浸出率可达87%,且硫酸试剂通过再生实现循环利用。通过XRD和扫描电镜对酸焙烧过程中粉煤灰的物相变化进行了研究。
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| 关 键 词： | 粉煤灰 硫酸 浸出 铝 |
Study on Recovering Al from Flyash by Sulphatation Calcining |
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| FAN Yan-qing,JIANG Xun-xiong,WANG Sheng-dong,FENG Lin-yong,JIANG Wei.Study on Recovering Al from Flyash by Sulphatation Calcining[J].Copper Engineering,2010(2):34-38,33. |
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| Authors: | FAN Yan-qing JIANG Xun-xiong WANG Sheng-dong FENG Lin-yong JIANG Wei |
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| Abstract: | The extraction alumina process is studied from fly-ash by sulphatation calcining.The factors are studied such as temperature,time,acid-to-mine ratio,and size etc,and the optimum conditions are obtained: particle size-400 mesh(more than 95%),calcination temperature 320 ℃,time 2h,acid-to-mine ratio 1.6.Under the condition,the leached alumina in flyash is up to 87%,and sulfuric acid is reused by regeneration technology.Characterizing by XRD and scanning electron microscopy,the change of phase is studied in roasting process. |
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| Keywords: | Fly-ash sulfuric acid leaching Al |
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