粉体工学会誌
Online ISSN : 1883-7239
Print ISSN : 0386-6157
ISSN-L : 0386-6157
21 巻, 4 号
選択された号の論文の5件中1~5を表示しています
  • 韓 仲〓, 増田 弘昭, 門脇 貴志
    1984 年21 巻4 号 p. 199-205
    発行日: 1984/04/10
    公開日: 2010/04/30
    ジャーナル フリー
    The flow-pattern of particles in a storage vessel of a table feeder was studied with particular attention to the effects of inclination of the storage vessel or a turn table, with or without hopper contraction and scraper. It was found that the width of the plug-flow region under normal condition (without inclination) became smaller when particles were continuously fed on the top of the powder bed. Inclination of a storage vessel or a turn table caused flow distortion which was found to be more intensive for the vessel inclination. The flow-distortion was, however, controlled by using a scraper at a suitable position. For controlling the powder flow rate without flow distortion, it was recommended to utilize more than two scrapers simultaneously. It was also found that the converging hopper or an unsuitable scraper caused intense flow distortion.
    Furthermore, the velocity of the distorted flow and the expansion speed of the distorted region were also studied.
  • 従来法の欠点とその改良に関する予備的検討
    佐川 良寿, 坂元 照男
    1984 年21 巻4 号 p. 206-211
    発行日: 1984/04/10
    公開日: 2010/04/30
    ジャーナル フリー
    In the conventional methods of fluidized bed granulating only the porous and surfacecoarse granules have been able to be produced.
    In this study, the new method was developed to improve these defects that the conventional methods had possessed.
    In the conventional methods, the drying process comes after the spraying process is finished. As only the agglomeration of particles occurred in the spraying process, even the weak structure of granules were not destroyed in this process. As a result, porous. granules are produced in this method.
    On the other hand, when the spraying and the drying are mutually repeated in the spraying process, the growth of particle is promoted while the weak structure of granules, are destroyed. As a result, the compactness and the smoothness of granules is promoted.
    When spraying and agitating are mutually repeated instead of spraying and drying in the spraying process, the compactness and the smoothness of granules are greatly promoted.
  • 造粒粒子を重質・平滑化し, かつ粒子成長を促進するための造粒条件の検討
    佐川 良寿, 坂元 照男
    1984 年21 巻4 号 p. 212-217
    発行日: 1984/04/10
    公開日: 2010/04/30
    ジャーナル フリー
    In the previous paper, we studied the method to improve the compactness and smoothness of granules produced by the fluidized bed granulating method. As results, it was found that compactness and smoothness were promoted when spraying and the agitating were mutually repeated, in the process of spraying.
    In this paper, the effect of crushing and plastic deformation, both by agitating, on the compactness and smoothness of granules were compared. The following results were obtained.
    1. The plastic deformation of granules by agitating was more effective than the crushing of granules by agitating, to promote the compactness and smoothness of granules.
    2. Considering the above findings, the most suitable sequence of fluidiaed bed granulating was the one composed of spraying, pre-drying, agitating and drying.
    3. To promote the growth of particles by the use of this sequence, it was found that the method of repetition and gradually increasing the feed-rate of spraying solution was very effective.
  • 力学的強度推算に関する先駆的研究 その2 Roscoe, Rumpf, Ashton ら
    牧野 和孝, 山田 昌治, 河原 正佳, 倉光 鋼太郎
    1984 年21 巻4 号 p. 218-223
    発行日: 1984/04/10
    公開日: 2010/04/30
    ジャーナル フリー
  • 森山 龍一
    1984 年21 巻4 号 p. 232-235
    発行日: 1984/04/10
    公開日: 2010/04/30
    ジャーナル フリー
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