Dynamic Changes in Interfacial Tension between Liquid Fe Alloy and Molten Slag Induced by Chemical Reactions
Dynamic Changes in Interfacial Tension between Liquid Fe Alloy and Molten Slag Induced by Chemical Reactions
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DOI：
10.2355/isijinternational.isijint-2015-654
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发表时间：
2016-01-01
影响因子：
1.8
通讯作者：
Yoshikawa, Takeshi
中科院分区：
文献类型：
--
作者：
Tanaka, Toshihiro;Goto, Hiroki;Yoshikawa, Takeshi
研究了液态铁合金与熔渣的界面张力随时间的变化规律，以阐明液态铁合金与熔渣之间的界面张力随时间变化的机理。界面张力随时间变化的行为可以解释为氧在界面处的吸附以及氧从界面扩散到液态Fe和熔渣的本体中。此外，当低粘度硅酸盐熔渣与不含Al的液态Fe接触时，界面张力从初始值到最小值缓慢而大幅度地下降，然后缓慢上升到最终平衡状态，其中部分SiO2分解并溶解到液态Fe中。从这些结果中，我们认为，分离的界面处吸附到液体铁的氧是非常缓慢的，可能是限速步骤。
The authors investigated the change in the interfacial tension with time for various combinations of molten slag and liquid Fe to elucidate the mechanism of the change in interfacial tension between liquid Fe alloy and molten slag over time accompanying reduction/oxidation reactions. The behavior of the change in the interfacial tension over time can be explained by the adsorption of oxygen at the interface and the diffusion of oxygen from the interface into the bulk of the liquid Fe and molten slag. In addition to that, we found that the interfacial tension decreases slowly and greatly from its initial value to a minimum point and then increases slowly to the final equilibrium state when molten silicate slag with low viscosity is brought into contact with liquid Fe without Al content and some of its SiO2 decomposes and dissolves into the liquid Fe. From these results, we suggest that the detachment of oxygen adsorbed at the interface into the liquid Fe is very slow and may be the rate-limiting step.