未活化与机械活化闪锌矿的氧化行为

中国有色金属学报, 2003, 13(2): 517-521.

未活化与机械活化闪锌矿的氧化行为

胡慧萍 ^1, , 陈启元 ^2, , 尹周澜 ^3, , 张平民 ^4, , 叶露升 ^5, , 郭冠华 ^6,

1.中南大学,化学化工学院,长沙,410083

2.中南大学,化学化工学院,长沙,410083

3.中南大学,化学化工学院,长沙,410083

4.中南大学,化学化工学院,长沙,410083

5.中南大学,化学化工学院,长沙,410083

6.中南大学,化学化工学院,长沙,410083

基金项目: 国家自然科学基金(59934080) 高等学校博士学科点专项科研项目(20000053321)

关键词： TG分析法 , 氧化行为 , 闪锌矿 , 机械活化 , 晶格畸变

Oxidation behaviors of unactivated and mechanically activated sphalerite

用TG分析法研究了未活化与机械活化闪锌矿在氧气氛下的氧化行为,结果表明,在400～873 K之间,机械活化闪锌矿的剩余质量随着球磨时间的增加而增加,未活化闪锌矿则表现为热质量损失.用粒度分析、X射线衍射分析和重量分析法分别对机械活化闪锌矿的结构进行了表征.发现随着球磨时间的增加,机械活化闪锌矿球磨一定时间后,其比表面积基本保持不变,而晶格畸变率增大,晶块尺寸降低,且机械活化闪锌矿中的单质硫磺含量极低,可忽略不计.机械活化和未活化闪锌矿在TG曲线上的表现主要与晶格畸变率增大和晶块尺寸降低有关.

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未活化与机械活化闪锌矿的氧化行为

Oxidation behaviors of unactivated and mechanically activated sphalerite

参考文献