Study on corrosion mechanism of RH immersion tube castable
Journal Title: Science Paper Online - Year 2009, Vol 4, Issue 11
Abstract
Corrosion mechanism of RH immersion tube castable is yet to be revealed due to few studies on the reactions between RH immersion tube castable and molten slag. In this paper, according to the phase equilibrium theory and the thermomechanical theory, the mechanism of molten slag corrosion was studied by thermomechanical analysis of the reactions between the RH immersion tube castable and the molten slag. The results showed that the SiO2 powder and α-Al2O3 powder in the Al2O3-MgO castable had two-fold effects. Hence, the addition amount of Al2O3-MgO castable should be properly controlled, meanwhile, the addition of the cement binder should be minimized. The viscosity of the molten slag was changed with the chemical reactions between the compositions of the molten slag. When the slag viscosity increased, the molten slag was easy to build up onto the RH immersion tube; the slag viscosity decreased while a large number of low melting point phases arose, which made the RH immersion tube vulnerable to penetration and erosion by slag. The low melting point phases, which were generated by the reaction between the molten slag and RH immersion tube castable, melted into the slag and lead to corrosion of the RH immersion tube, while the high melting point phases built up onto the RH immersion tube.
Authors and Affiliations
Caiyun Lu, Min Chen, Zhongqiang Sun
Keywords
Related Articles
- EP ID EP154998
- DOI -
- Views 115
- Downloads 0
Influence of CuxTe back contact on CdS/CdTe photovoltaic device
CuxTe polycrystalline thin films were prepared by co-evaporation method. The influence of the film characteristic on the CdS/CdTe photovoltaic device performance was investigated by XRD. The results show that as deposite...
中空夹层钢管混凝土柱极限承载力研究
基于双剪统一强度理论，充分考虑了中间主应力，推导出圆中空夹层钢管混凝土轴心受压构件的承载力的计算式，并推广到内圆外方中空夹层钢管混凝土，得到了统一的承载力计算式，将计算结果与文献资料的试验数据进行对比，结果吻合良好，验证...
基于DSP的草莓采摘机器人关节控制器的研究
本课题以永磁同步电机为执行电机，采用三闭环位置伺服控制方案，直轴电枢电流为0的矢量控制策略，制作了以 DSP为处理器的运动控制器；采用ACPM750E为电机功率驱动模块，进行相应控制程序的设计。实验结果表明基于DSP的机器人关节控制器的...
Application of six-channel high-accuracy ADS8364 to the micro-inertial heading and attitude system
The main performance and architecture of high-precision and 6-channel simultaneous sampling Analog-to-digital converters ADS8364 were introduced, which combined with practical application of hign-precision floating-point...
Hydrothermal synthesis and luminescence properties of afterglow phosphors (Y1-xGdx)2O3:Eu3+, Mg2+, Ti4+
Y2O3:Eu3+ is a high -performance red light-emitting materials. That doped them to get the afterglow properties is an effective way to develop red long afterglow materials. In this paper, red long afterglow luminescent ma...