水銀-水溶液系二相界面に生じる気泡形状の解析

抄録

Slag foaming is one of the major important problems in commercial iron and steel smelting processes. It is clear from recent studies that one main cause of slag foaming is due to high speed generation of small bubbles at the slag-metal interface. Thus, analysis of bubble shape and size generated at liquid interfaces is very meaningful.
In the present study, a model for estimation of the maximum bubble size detached from a liquid interface was established from a view-point of interfacial chemistry. Bubbles electrochemically generated at a mercury-HCl/H₂SO₄ solution interface were directly observed through a microscope, and the effect of wettability between the two liquid phases on bubble shape and size was investigated.
The bubble size generated at the interface mainly depended on the wettability between the liquids. The bubble size increased with a decrease of wettability. The model proposed in the present study may quantitatively explain the bubble generation behavior at the interface.