<寄書>鑛粒の浸潤熱測定について

概要

論文の詳細を見る
The heat of immersion of natural or artificial mineral powders in water which had been degassed at elevated temperature was measured by a sensitive calorimeter. The energy of immersion was estimated from the heat liberated and the surface area determined by the nitrogen adsorption method. The artificial hematite or nickel oxide, exhibiting the strong floatability in the flotation test unexpectedly, had the value of the energy of immersion similar to to that of barite, artificial alumina, etc. which were hydrophilic, while graphite showed the low value in correspondence to the hydrophobic character. The surface area of artificial alumina powder was estimated from the heat of immersion after it had been exposed to the saturated vapour of water. The area thus obtained was considerably reduced, as compared with the nitrogen adsorption method. This seems to be due to its porous structure.
東北大学の論文
1958-02-24