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| 1 | 铁矿粉烧结电除尘灰中氯化钾的赋存形态及其水浸动力学分析(英文)显示文摘为分析氯化钾从烧结电除尘灰中水浸出速率及浸出动力学,使用扫描电镜-线扫描分析氯化钾在烧结电除尘灰中的赋存状态及其与其它颗粒之间的赋存关系。实验发现烧结电除尘的平均粒径小于10μm,大多以团聚形式存在;氯化钾和氯化钠颗粒在烧结电除尘中的部分表面与其它粉尘颗粒如铁氧化物、钙镁化合物等有粘附连接。氯化钾在烧结电除尘中的存在形式表明其水浸出过程可视为可溶水的物质的溶解过程。借助于在线电导率测量手段分析烧结电除尘灰的水浸动力学。结果证明该粉尘的水浸过程符合扩散控制的溶解过程模型。浸出平衡在5min之内即可达到,同时氯化钾的浸出率达到 95%以上。 | 彭翠 郭占成 张福利 | 2011 | Transactions of Nonferrous Metals Society of China2011，21，8： | 6 |
| 2 | Reduction mechanisms of pyrite cinder-carbon composite pellets显示文摘The non-isothermal reduction mechanisms of pyrite cinder-carbon composite pellets were studied at laboratory scale under argon (Ar) atmosphere. The composite pellets as well as the specimens of separate layers containing pyrite cinder and coal were tested. The degree of reduction was measured by mass loss. The microstructures of the reduced composite pellets were characterized by scanning electron microscopy (SEM). It is found that the reduction processes of the composite pellets may be divided into four stages: reduction via CO and H2 from volatiles in coal at 673-973 K, reduction via H2 and C produced by cracking of hydrocarbon at 973-1123 K, direct reduction by carbon via gaseous intermediates at 1123-1323 K, and direct reduction by carbon at above 1323 K. Corresponding to the four stages, the apparent activation energies (E) for the reduction of the composite pellets are 86.26, 78.54, 72.01, and 203.65 kJ.mol-1, respectively. | Zheng-jian Liu Xiang-dong Xing Jian-liang Zhang Ming-ming Cao Ke-xin Jiao Shan Ren | 2012 | International Journal of Minerals,Metallurgy and Materials2012，19，11： | 3 |
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