<報文>硫黄製錬に關する基礎的研究(第5報) : 液體硫黄, 水, 固體およびガスの相互の間に考えられる界面現象について

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Some interfacial phenomena between liquid sulfur, solid and gas ; liquid sulfur, water and gas ; and liquid sulfur, water and solid were quantitatively determined and the mechanism of the extraction of sulfur from ore in an autoclaving process was illustrated. (1) In the system of liquid sulfur, solid and gas connected with the adhesional work of liquid on solid, the contact angle of liquid sulfur was determined with fused silica and pyrite. The contact angle of liquid sulfur on silica and pyrite were 60.0° and 58.4° between 120℃ and l60℃ by the drop method. Due to the effect of vaporization of liquid sulfur, it did not give true contact angle above 160℃ in this method. (2) The system of liquid sulfur, water and gas was studied by the formation of liquid lens of the supercooled sulfur on the surface of water at 40℃. As a result, the interfacial tension between liquid sulfur and water was compared with the previous work. (3) In the system of liquid sulfur, water and solid, the interfacial contact angle between liquid sulfur and water on fused silica was measured at 120℃. The result was 130.3° from liquid sulfur to water by the drop method. This result showed that the difference of the adhesional work of liquid sulfur and that of water on fused silica was -31.0 dyne/cm at 120℃.
東北大学の論文
1958-02-24