<報文>硫黄製錬に関する基礎的研究(第6報) : 液体硫黄と水との間の界面張力に及ぼす硫黄中の不純物の影響について

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In the domestic sufur mines, it was found by chemical analysis that sulfur and its ore contain casbonaceous organic substances. Combustion method adopted in analysis shows carbon from organic substances except carbonate in the range of 0.01〜0.05% C in samples. It is considered from the result that its effect on the interfacial tansion is noticeably important in an autoclaving process. In this experiment, samples which contain soluble substances from tar of coal or charcoal to sulfur were prepared for the observation of these effects. The impurities in sulfur caused very considerable changes in the intesfacial tension. For an example, sulfur containing 0.01〜0.05% C (carbon source from coal tar) was about 55〜28 dyne/cm at 120℃. Further, sample containing organic substances from coal tar was thermally unstable. After ten hours at 120℃, it was shown that intesfacial tension was about 36〜16 dyne/cm in sample containing 0.01〜0.03% C.
東北大学の論文
1958-07-30