用软锰矿直接制备高纯高比表面四氧化三锰

田甜; 罗红玉; 杨超; 皮振邦; 田熙科

用软锰矿直接制备高纯高比表面四氧化三锰

1.
中国地质大学材料科学与化学工程学院, 湖北武汉 430074
2.
广东省中山市质量计量监督检测所, 广东中山 528400

基金项目:

武汉市青年科技晨光计划 20065004116-22

详细信息

作者简介:
田甜(1982-), 女, 硕士研究生, 主要从事纳米材料的研究工作.E-mail: xktian@cug.edu.cn

中图分类号: P578.4
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出版历程
- 收稿日期: 2006-06-12
- 刊出日期: 2007-01-25

Preparation of High Purity and High Specific Surface Area Mn₃O₄ from Primary Manganese Ores

1.
Faculty of Material Science and Chemistry Engineering, China University of Geosciences, Wuhan 430074, China
2.
Guangdong Zhongshan Supervision Testing Institute of Quality & Metrology, Zhongshan 528400, China

摘要

摘要: 软锰矿经中性浸出, 通过除杂净化, 制备出高纯硫酸锰溶液; 碱化沉淀, 采用微波加热进行控制氧化合成四氧化三锰, 确定了该方法的最佳工艺参数.分别用扫描电镜、透射电镜、X射线衍射仪和全自动氮吸附比表面仪对样品进行了检测, 结果表明: 该方法成功制备了高纯四氧化三锰, 比表面积高达28.27 m²/g.
- 软锰矿 /
- 中性浸出 /
- 微波热处理 /
- 四氧化三锰
Abstract: Immerse primary Mn ores in neutral solution, purify chemically, and manganese sulphate with high purity are obtained. Making use of the selective heating property of microwave, Mn₃O₄ powder can be prepared controllably. The best technology conditions were established through experiments. The samples are characterized by SEM, TEM, XRD and BET. The results show that using this method, high quality Mn₃O₄ can be prepared successfully from primary Mn ores with a high specific surface area of 28.27 m²/g.
- primary manganese ores /
- neutral leaching /
- microwave heating /
- manganic manganous oxide

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图 1 不同反应温度下前驱体粉体的SEM照片

Fig. 1. SEM micrographs of powders at different temperatures

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图 2 不同反应时间的前驱体粉体的SEM照片

Fig. 2. SEM micrographs of powders at different times

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图 3 不同pH值条件下前驱体粉体的SEM照片

Fig. 3. SEM micrographs of powders at different pH values

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图 4 微波烧结前(a) 和微波烧结后(b) 样品的XRD图

Fig. 4. XRD pattern of samples (a) before microwave heating and (b) after microwave heating

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图 5 成品的X射线衍射分析

Fig. 5. XRD pattern of Mn₃O₄ powder

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图 6 最佳工艺条件下Mn₃O₄的透射电镜照片

Fig. 6. TEM photograph of Mn₃O₄ powder

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表 1 软锰矿石主要成分

Table 1. Chemical compositions of manganese ore concentrates

表 2 Mn₃O₄产品化学成分

Table 2. Chemical compositions of Mn₃O₄ powder

参考文献(14)

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