巻号一覧
前身誌
25 巻, 5 号
選択された号の論文の5件中1～5を表示しています
- |<
- <
- 1
- >
- >|
-
微小径空孔を含む吸着剤への実験的等温線への3パラメター吸着式の適応性遠藤 敦, 鈴木 昇, 小森 敦史, 宇津木 弘1988 年 25 巻 5 号 p. 280-286
発行日: 1988/05/10
公開日: 2010/04/30
ジャーナル フリーThe amount of micropore and monolayer absorbed on the external surface of adsorbents were obtained from the αs-plots of argon adsorption isotherms at 77K on untreated or surface-treated silica gels and activated carbons. A three-parameter adsorption equation can be used to predict the isotherms reduced by their micropore amounts throughout nearly the entire relative pressure range. The amounts of monolayer thus obtained agreed with the amounts of external monolayer obtained from their αs-plots. The three-parameter adsorption equation can also be used to predict their bulk isotherms with a reduction of the amount of micropore. The amount of monolayer thus obtained agreed with the sum of the amounts of the micropore and monolayer on the external surface of the adsorbent. The micropore of activated carbon is found to be much finer than that of silica gels, and the cross sectional area of the adsorbed adsorbate molecule in the micropore of activated carbon is also found to be smaller than that of the usual adsorbate molecule, because of the strong interaction due to the wall of the micropore.抄録全体を表示PDF形式でダウンロード (793K) -
鈴木 道隆, 六車 嘉貢, 廣田 満昭, 大島 敏男1988 年 25 巻 5 号 p. 287-291
発行日: 1988/05/10
公開日: 2010/04/30
ジャーナル フリーIn order to quantitatively determine a particle's shape, the profile data of particle-projected figures were fed into the personal computer using the digitizer, and then the fractal dimensions of the particles were calculated by the divider method. The fractal dimensions of twenty-eight different kinds of sample particles were compared with Wadell's working sphericity and the degree of circularity (or the perimeter ratio) based on the same particle-projected figures. The results show that the fractal dimensions of samples are correlated with circularity. The fractal dimension becomes a useful means for the quantitative representation of a particle-projected shape as well as circularity.抄録全体を表示PDF形式でダウンロード (529K) -
神田 良照, 高橋 俊介, 畑 勇治, 本間 寅二郎1988 年 25 巻 5 号 p. 292-296
発行日: 1988/05/10
公開日: 2010/04/30
ジャーナル フリーRoller mills have come to be actively used for the fine grinding of solids. In this paper, the compressive crushing of powder beds was carried out to study a roller mill. The effect of the applied load, the mass of feed and the particle size on the probability of crushing and on the crushing resistance were studied. The sample used was quartz. The following results were obtained:
1) When the applied load was constant, the deformation of the powder bed increased with the increase in the mass of feed and particle size.
2) The probability of crushing increased with the increase in the applied load, but the rate of increase of the probability gradually decreased.
3) The mass of the feed with a low crushing resistance was observed, and it had a certain range. This range narrowed with the decrease in the particle size.
4) The crushing resistance increased with the decrease in the particle size.抄録全体を表示PDF形式でダウンロード (529K) -
趙 千秋, 山田 茂樹, 神保 元二1988 年 25 巻 5 号 p. 297-302
発行日: 1988/05/10
公開日: 2010/04/30
ジャーナル フリーTo clarify the mechanism and characteristics of a planetary mill grinding, batch grinding experiments were carried out using several kinds of balls each with a different specific gravity and size. The motion of the grinding media in the mill was observed and analyzed by using multistroboscope photography connected to an image analyzer, and the pressure force acting on the mill wall by the grinding media was measured by using a special pressure sensor.
A surging phenomenon consisting of a pendulum-like oscillation of the grinding media in the mill is observed. It is found that the compressive-abrasive motion of the ball charge on the compressed powder layer is effective in producing very fine particles.
An optimum fractional ball filling of the mill was demonstrated by the experimental results. It was proved that optimum filling results in the maximum applied force and the greatest motion distance with the greatest oscillation frequency of the ball charge on the powder layer.
It was also found that the smaller the size of grinding ball, the finer the ground product that can be obtained. The ratio of the largest remaining particle size to the ball size is about 3×10-3.抄録全体を表示PDF形式でダウンロード (612K) -
松本 幹治1988 年 25 巻 5 号 p. 303-309
発行日: 1988/05/10
公開日: 2010/04/30
ジャーナル フリーPDF形式でダウンロード (883K)
- |<
- <
- 1
- >
- >|