| 云浮天然黄铁矿粉的深加工和表征 |
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| 引用本文： | 周慧明,王大刚,范力仁.云浮天然黄铁矿粉的深加工和表征[J].广东化工,2012,39(2):65-67. |
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| 作者姓名： | 周慧明 王大刚 范力仁 |
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| 作者单位： | 1. 广东云浮云开粉体有限公司,广东云浮,527343
2. 教育部纳米矿物材料及应用工程研究中心中国地质大学,湖北武汉,430074 |
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| 摘 要： | 采用重选和反浮选相结合的方法对广东云浮天然黄铁矿进行提纯,经气流粉碎后获得平均粒径为13μm、T Fe和S含量分别为45.30wt%、50.95 wt%的黄铁矿超微细粉体,采用XRD、EDS、XPS以及TG对黄铁矿超微细粉体进行了表征。XRD与EDS分析结果表明黄铁矿超微细粉体的主要物相为黄铁矿FeS2,粉体颗粒呈不规则形状;TG结果表明黄铁矿超微细粉体在440℃前具有较好的热稳定性,XPS分析表明黄铁矿超微细粉体表面Fe以Fe3+形式存在,S主要以SO42-形式存在。
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| 关 键 词： | 天然黄铁矿 深加工 超微细粉体 表征 正极材料 |
Intensive Processing and Characterization of Natural Pyrite Powder from Yunfu |
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| Zhou Huiming,Wang Dagang,Fan Liren.Intensive Processing and Characterization of Natural Pyrite Powder from Yunfu[J].Guangdong Chemical Industry,2012,39(2):65-67. |
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| Authors: | Zhou Huiming Wang Dagang Fan Liren |
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| Affiliation: | 1.Co.,Ltd.,of Yunkai Powder in Guangdong Yunfu,Yunfu 527343; 2.Engineering Research Center and Application of Nano-Geomaterials of Ministry of Education (China University of Geosciences),Wuhan 430074,China) |
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| Abstract: | In the work,natural pyrite samples from Yunfu were employed as the source materials,and ultrafine pyrite powder was prepared via deep processing including reelection,reverse floation and airflow grind,which the concentrations of T Fe and S were 45.30 wt%,50.95 wt% respectively and the average grain size was 13 μm.The ultrafine pyrite powder was characterized by X-ray diffraction（XRD）,Energy dispersive spectroscopy（EDS）,Thermo-gravimetric analysis（TG） and X-ray photoelectron spectroscopy（XPS）.XRD and EDS demonstrate the phase of ultrafine pyrite powder is mostly pyrite FeS2.TG shows ultrafine pyrite powder has excellent thermo-stability under 440 ℃.XPS represents that Fe and S on the ultrafine pyrite powder surface exist in the form of Fe3＋ and SO42-,respectively. |
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| Keywords: | natural pyrite intensive processing ultrafine powder characterization cathode materials |
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