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投稿时间:2014-12-22 修订日期:2014-12-23 录用日期:2014-12-26 网络发布日期:2015-04-21
投稿时间:2014-12-22 修订日期:2014-12-23 录用日期:2014-12-26 网络发布日期:2015-04-21
中文摘要: 在不同矿石粒度下,探究焙烧预处理对矿石宏观形貌、粒度分布、硫含量、物相结构及矿物微观形貌的影响。结果表明,较粗粒径的盘磨矿的焙烧效果优于较细粒径的球磨矿;焙烧后矿石粒度有细化的趋势,其中盘磨矿中的黄铁矿被氧化成赤铁矿,颗粒变得较为疏松,球磨矿中含有微量的磁铁矿;在700 ℃、30 min的焙烧条件下,矿石的硫含量从2.3%降低至0.48%,满足工业生产要求。
Abstract:The effects of roasting pretreatment on macro morphology, particle size distribution, sulfur content, phase structure and mineral microstructure were investigated based on different particle size of high-sulfur bauxite. The results show that the roasting effect of coarse particle size of millstone-milling is better than that of finer grain size of ball-milling. Ore particle size has a tendency to be refined after roasting. Pyrite in millstone-milling ore is oxidized to hematite, and particles become relatively loose. Ball grinding ore contains trace magnetite. Sulfur content in calcining declines from 2.3% to 0.48% with roasting at 700 ℃ for 30 min which satisfied industrial production requirement.
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基金项目:国家自然科学基金资助项目(51264006,51474079);贵州省科技厅国际合作项目(G[2013]7007);贵州省校合作项目(LH[2014]7609);贵阳市科技局项目([2012103]69,20122056-4);贵州省教育厅项目(黔教合重大专项字[2012]0002)
| 作者 | 单位 | |
| 张曼 | 贵州大学 | 15761621312@163.com |
| 陈朝轶* | 贵州大学 | ccy197715@126.com |
| 李军旗 | 贵州冶金工程与过程节能重点实验室 | |
| 赵聪 | 贵州冶金工程与过程节能重点实验室 |
| Author Name | Affiliation | |
| zhangman | Guizhou university | 15761621312@163.com |
| Chen chao-yi | ccy197715@126.com | |
| LI Jun-qi | ||
| ZHAO Cong |
引用文本:
张曼,陈朝轶,李军旗,赵聪.粒度对高硫铝土矿焙烧脱硫的影响[J].有色金属(冶炼部分),2015(5):33-36.
zhangman,Chen chao-yi,LI Jun-qi,ZHAO Cong.Effect of Particle Size on Roasting Desulfurization of High-sulfur Bauxite[J].Nonferrous Metals (Extractive Metallurgy),2015(5):33-36.
张曼,陈朝轶,李军旗,赵聪.粒度对高硫铝土矿焙烧脱硫的影响[J].有色金属(冶炼部分),2015(5):33-36.
zhangman,Chen chao-yi,LI Jun-qi,ZHAO Cong.Effect of Particle Size on Roasting Desulfurization of High-sulfur Bauxite[J].Nonferrous Metals (Extractive Metallurgy),2015(5):33-36.

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