| 脱硫剂与RH浸渍管耐火材料作用的热力学分析 |
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| 引用本文： | 张国兴,何生平,王谦,曾建华.脱硫剂与RH浸渍管耐火材料作用的热力学分析[J].钢铁研究学报,2011,23(6):9-12. |
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| 作者姓名： | 张国兴 何生平 王谦 曾建华 |
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| 作者单位： | 1. 重庆大学材料科学与工程学院,重庆,400044
2. 攀钢集团钢铁研究院有限公司,四川成都,611731 |
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| 摘 要： | RH浸渍管侵蚀严重是目前采用RH脱硫普遍存在的一个问题,弄清其侵蚀机理是减缓和避免侵蚀的基本前提.采用FactSage软件从热力学角度分析了RH脱硫剂与浸渍管浇注料的反应机理,同时分析了脱硫剂以及浇注料中添加MgO组分对侵蚀的影响.计算结果表明,RH脱硫剂与浇注料反应生成的主要相为CaO·6Al2O3(CA6)和CaO...
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| 关 键 词： | 脱硫剂 浸渍管 浇注料 侵蚀机理 |
Thermodynamical Analysis on Corrosion Mechanism of RH Submerged Tube Influenced by Desulphurizer |
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| ZHANG Guo-xing,HE Sheng-ping,WANG Qian,ZENG Jian-hua.Thermodynamical Analysis on Corrosion Mechanism of RH Submerged Tube Influenced by Desulphurizer[J].Journal of Iron and Steel Research,2011,23(6):9-12. |
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| Authors: | ZHANG Guo-xing HE Sheng-ping WANG Qian ZENG Jian-hua |
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| Affiliation: | 1.College of Materials Science and Engineering,Chongqing University,Chongqing 400044,China;2.Pangang Group Research Institute Co Ltd,Chengdu 611731,Sichuan,China) |
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| Abstract: | The corrosion of RH submerged tube is a current universal problem for RH desulfurization process, and understanding the corrosion mechanism is the basic premise to alleviate and avoid the corrosion. The mechanism of the reaction between RH desulfurizer and castable for RH submerged tube was thermodynamic analyzed using FactSage software, and the impact on corrosion of CaF2 and MgO in desulfurier and castable was also analyzed. The calculated results show that CaO·6Al2O3 (CA6) and CaO·2Al2O3 (CA2) are the main phase for castable after eroded by RH desulfurizer, the saturation solubility of Al2O3 in RH desulfurizer is lower after addition of 5% MgO. Meanwhile, compacted MA spinel with high melting point can be produced, which can effectively reduce corrosion and extend RH submerged tube utility longevity. |
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