Effect of CaCO3 on the Gaseous Reduction of Tin Oxide Under CO-CO2 Atmosphere
Effect of CaCO3 on the Gaseous Reduction of Tin Oxide Under CO-CO2 Atmosphere
复制标题
CO-CO2气氛下CaCO3对氧化锡气态还原的影响
DOI：
10.1080/08827508.2016.1168414
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发表时间：
2016-03
影响因子：
5
通讯作者：
Jiang Tao
中科院分区：
文献类型：
--
作者：
Su Zijian;Zhang Yuanbo;Liu Bingbing;Chen Jun;Li Guanghui;Jiang Tao
摘要 方解石（CaCO3）作为主要杂质之一，对含锡铁精矿中氧化锡在选择还原挥发过程中的挥发行为具有不确定的影响。本研究将天然方解石粉添加到含锡铁精矿中，研究不同焙烧温度、CO含量和焙烧时间下CaCO3对锡挥发行为的影响。此外，利用XRD、SEM-EDS结合热力学计算确定了CaCO3对SnO2相变的影响。结果表明，CaCO3对Sn挥发率有显着的不利影响，因为在CO-CO2气氛下容易形成Ca2SnO4。研究还发现SnO(s)的生成是促进Ca2SnO4形成最关键的中间体。
ABSTRACT Calcite (CaCO3), one of the main impurities, has an uncertain effect on the volatilization behavior of tin oxide in the tin-bearing iron ore concentrates during the selective reduction volatilization process. In this study, natural calcite powders were added into the tin-bearing iron ore concentrates to investigate tin volatilization behavior affected by CaCO3 under different roasting temperature, CO content, and roasting time. In addition, the effect of CaCO3 on the phase transformation of SnO2 was determined using XRD, SEM-EDS combined with thermodynamics calculation. The results indicated that CaCO3 had a significantly adverse effect on the Sn volatilization ratio, because Ca2SnO4 was easily formed under CO-CO2 atmosphere. It was also found from the study that the generation of SnO(s) was the most critical intermediate for promoting the formation of Ca2SnO4.
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影响因子：
6.2
作者：
X. Chen;Chao Ma;Shikuan Bao;Hai Zhang
通讯作者：
X. Chen;Chao Ma;Shikuan Bao;Hai Zhang
975℃-1100℃不同CO-CO2气氛下SnO2挥发行为降低
影响因子：
--
作者：
Zhang Yuanbo;Liu Bingbing;Su Zijian;Chen Jun;Li Guanghui;Jiang Tao
通讯作者：
Jiang Tao
DOI：
10.1016/j.apradiso.2015.02.026
发表时间：
2015-05
期刊：
Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine
影响因子：
--
作者：
A. Canimoglu;J. Garcia-Guinea;Y. Karabulut;M. Ayvacikli;A. Jorge;N. Can
通讯作者：
A. Canimoglu;J. Garcia-Guinea;Y. Karabulut;M. Ayvacikli;A. Jorge;N. Can
DOI：
--
发表时间：
2011
期刊：
--
影响因子：
--
作者：
Huang Zhucheng
通讯作者：
Huang Zhucheng
影响因子：
6.2
作者：
Azad, AM;Hon, NC
通讯作者：
Hon, NC