{"title":"分離・混合プロセスの高精度化を目的とした粉体シミュレーション","authors":"Yuki Tsunazawa","doi":"10.4164/sptj.61.98","DOIUrl":"https://doi.org/10.4164/sptj.61.98","url":null,"abstract":"","PeriodicalId":17422,"journal":{"name":"Journal of The Society of Powder Technology, Japan","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140459042","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In the vacuum system of pneumatic conveying, the authors have proposed that a suction nozzle equipped with an injection pipe at the center would provide a highly dense, highly efficient method of transporting powder and particles. In this paper, we examined the effects of suction velocity and particle diameter on the loading ratio and the suction nozzle efficiency by attaching the injection port on the outer part of the suction nozzle. As a result, in the case of coarse particles within this experimental condition, the effect of suction velocity differs in both cases (the injection ports positioned at the center and outer part). This characteristic is explainable by the difference between fluidization phenomenon and aeration phenomenon. Under conditions that are not affected by the suction velocity, neither is affected by the particle diameter in both cases.
{"title":"Effects of Suction Velocity and Particle Diameter on Pneumatic Conveying Characteristics of Suction Nozzle with Injection Pipe","authors":"Minoru Fukuhara, Shuichi Ishiharada, Tetsuya Ishigai, Yuta Kanzaki, Masahito Fukumura, Takumi Imabayashi, Mitsuhiro Nakao","doi":"10.4164/sptj.61.82","DOIUrl":"https://doi.org/10.4164/sptj.61.82","url":null,"abstract":"In the vacuum system of pneumatic conveying, the authors have proposed that a suction nozzle equipped with an injection pipe at the center would provide a highly dense, highly efficient method of transporting powder and particles. In this paper, we examined the effects of suction velocity and particle diameter on the loading ratio and the suction nozzle efficiency by attaching the injection port on the outer part of the suction nozzle. As a result, in the case of coarse particles within this experimental condition, the effect of suction velocity differs in both cases (the injection ports positioned at the center and outer part). This characteristic is explainable by the difference between fluidization phenomenon and aeration phenomenon. Under conditions that are not affected by the suction velocity, neither is affected by the particle diameter in both cases.","PeriodicalId":17422,"journal":{"name":"Journal of The Society of Powder Technology, Japan","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140459069","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"表面フッ素化反応によるフッ化マグネシウム中空ナノ粒子の新規合成法 ―低温大量合成をめざして―","authors":"Ryusuke Tsuji, Shin Omoto, Keisuke Sato, S. Hattori, Tetsuo Yonezawa, Takuya Kinoshita, Yoshiki Okada","doi":"10.4164/sptj.61.91","DOIUrl":"https://doi.org/10.4164/sptj.61.91","url":null,"abstract":"","PeriodicalId":17422,"journal":{"name":"Journal of The Society of Powder Technology, Japan","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140459045","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"乾式ビーズミルの開発とそれによるタルクの粉砕","authors":"Tomoya Shimizu, Tsuyoshi Ishikawa, Fumio Saito","doi":"10.4164/sptj.61.76","DOIUrl":"https://doi.org/10.4164/sptj.61.76","url":null,"abstract":"","PeriodicalId":17422,"journal":{"name":"Journal of The Society of Powder Technology, Japan","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140459175","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"第2章 粉体の生成と生産プロセス 2.3 晶析 2.3.2 結晶粒子群の純度","authors":"Kouji Maeda","doi":"10.4164/sptj.61.104","DOIUrl":"https://doi.org/10.4164/sptj.61.104","url":null,"abstract":"","PeriodicalId":17422,"journal":{"name":"Journal of The Society of Powder Technology, Japan","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140459202","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"カーボンリサイクルによる炭酸塩の製造","authors":"Atsushi Iizuka","doi":"10.4164/sptj.61.17","DOIUrl":"https://doi.org/10.4164/sptj.61.17","url":null,"abstract":"","PeriodicalId":17422,"journal":{"name":"Journal of The Society of Powder Technology, Japan","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140511226","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"2.3.1 Fundamentals and Applications of Industrial Crystallization","authors":"H. Takiyama","doi":"10.4164/sptj.61.23","DOIUrl":"https://doi.org/10.4164/sptj.61.23","url":null,"abstract":"","PeriodicalId":17422,"journal":{"name":"Journal of The Society of Powder Technology, Japan","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140510616","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Wet granules are used in various areas, owing to their higher compressibility. In this study, finite element method (FEM) simulations of wet granule compression are performed to discuss the influence of binder on the compressibility of wet granules. The Drucker-Prager Cap model was applied to wet granules with parameters obtained from compression and powder shear tests, and the FEM simulation was performed using these parameters. The results showed that the axial stress at the bottom surface and the radial stress of the wall obtained from the FEM simulation were consistent with the experimental values for the bottom and radial (wall) stress of the compression cell in large strain regions. Furthermore, the FEM results for wet granules with different amounts of binder suggested that particles in wet granules with higher amounts of binder adhered each other more strongly, thereby increasing the axial and radial stresses.
由于湿颗粒具有较高的可压缩性，因此被广泛应用于各个领域。本研究对湿颗粒压缩进行了有限元法（FEM）模拟，以讨论粘合剂对湿颗粒压缩性的影响。利用压缩和粉末剪切试验获得的参数，将 Drucker-Prager Cap 模型应用于湿颗粒，并使用这些参数进行有限元模拟。结果表明，有限元模拟获得的底面轴向应力和壁面径向应力与大应变区域压缩池的底面和径向（壁面）应力的实验值一致。此外，不同粘合剂用量的湿颗粒的有限元模拟结果表明，粘合剂用量较高的湿颗粒中的颗粒之间的粘附力更强，从而增加了轴向和径向应力。
{"title":"Finite Element Method Simulation of Wet Granule Compression","authors":"Takumi Kusano, M. Tani, Hiroshi Nakamura","doi":"10.4164/sptj.61.9","DOIUrl":"https://doi.org/10.4164/sptj.61.9","url":null,"abstract":"Wet granules are used in various areas, owing to their higher compressibility. In this study, finite element method (FEM) simulations of wet granule compression are performed to discuss the influence of binder on the compressibility of wet granules. The Drucker-Prager Cap model was applied to wet granules with parameters obtained from compression and powder shear tests, and the FEM simulation was performed using these parameters. The results showed that the axial stress at the bottom surface and the radial stress of the wall obtained from the FEM simulation were consistent with the experimental values for the bottom and radial (wall) stress of the compression cell in large strain regions. Furthermore, the FEM results for wet granules with different amounts of binder suggested that particles in wet granules with higher amounts of binder adhered each other more strongly, thereby increasing the axial and radial stresses.","PeriodicalId":17422,"journal":{"name":"Journal of The Society of Powder Technology, Japan","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140511051","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"2. Formation and Production of Powder and Particles 2.3 Crystallization","authors":"Kazunori Kadota, Yoshiyuki Shirakawa","doi":"10.4164/sptj.61.21","DOIUrl":"https://doi.org/10.4164/sptj.61.21","url":null,"abstract":"","PeriodicalId":17422,"journal":{"name":"Journal of The Society of Powder Technology, Japan","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140511200","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Keita Yoshitake, S. Suzuki, Tomoyuki Hirano, Takashi Ogi
{"title":"火薬を用いた球状微粒子の燃焼合成","authors":"Keita Yoshitake, S. Suzuki, Tomoyuki Hirano, Takashi Ogi","doi":"10.4164/sptj.61.4","DOIUrl":"https://doi.org/10.4164/sptj.61.4","url":null,"abstract":"","PeriodicalId":17422,"journal":{"name":"Journal of The Society of Powder Technology, Japan","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140510551","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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