| 高硫铝土矿的焙烧预处理 |
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| 引用本文： | 吕国志,张廷安,鲍丽,豆志河,张伟光.高硫铝土矿的焙烧预处理[J].过程工程学报,2008,8(5):892-896. |
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| 作者姓名： | 吕国志 张廷安 鲍丽 豆志河 张伟光 |
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| 作者单位： | 东北大学材料与冶金学院,辽宁,沈阳,110004 |
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| 基金项目： | 国家自然科学基金，国家重点基础研究发展计划(973计划)，高等学校博士学科点专项科研项目，辽宁省优秀青年科技人才基金 |
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| 摘 要： | 采用回转窑对我国高硫铝土矿进行焙烧预处理，考察了焙烧温度、焙烧时间对矿物中硫含量及氧化铝溶出性能的影响，利用SEM和XRD技术对焙烧矿的微观形貌、晶型结构变化进行了分析，并对高硫矿脱硫机理和焙烧机理作了探讨. 结果表明，焙烧脱硫处理高硫型铝土矿是可行的，焙烧温度为750℃、焙烧时间为60 min时，焙烧矿中硫含量低于0.7%，达到我国 氧化铝生产的工业要求；焙烧矿在溶出温度220℃、溶出时间60 min的条件下，氧化铝溶出率达到97%以上.
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| 关 键 词： | 高硫铝土矿 回转窑焙烧 脱硫 溶出性能 |
| 收稿时间： | 2008-5-30 |
| 修稿时间： | 2008-8-21 |
Roasting Pretreatment of High-sulfur Bauxite |
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| LU Guo-zhi,ZHANG Ting-an,BAO Li,DOU Zhi-he,ZHANG Wei-guang.Roasting Pretreatment of High-sulfur Bauxite[J].Chinese Journal of Process Engineering,2008,8(5):892-896. |
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| Authors: | LU Guo-zhi ZHANG Ting-an BAO Li DOU Zhi-he ZHANG Wei-guang |
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| Affiliation: | LU Guo-zhi,ZHANG Ting-an,BAO Li,DOU Zhi-he,ZHANG Wei-guang (School of Materials , Metallurgy,Northeastern University,Shenyang,Liaoning 110004,China) |
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| Abstract: | Roasting pretreatment of high sulfur bauxite was studied using a rotary kiln, and the effects of roasting temperature and roasting time on sulfur content and digestion performance of high sulfur bauxite were examined. Changes of microscopic appearance and crystal structure were analyzed with SEM and XRD techniques. The mechanism of desulphurization and roasting pretreatment was also studied. The experimental results indicate that the sulfur in bauxite was successfully discharged as gas form through roasting... |
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| Keywords: | high-sulfur bauxite roasting desulphurization digestion performance |
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