Power Consumption of Double-Bladed Kneaders of Various Shapes

• Nishi Kazuhiko

  Faculty of Engineering, Yokohama National University

• Matsuda Kinya

  Graduate School of Engineering, Yokohama National University

• Suzuki Yasuo

  Department of Chemical and Biological Engineering, Hachinohe National College of Technology

• Misumi Ryuta

  Faculty of Engineering, Yokohama National University

• Kamiwano Mitsuo

  Faculty of Engineering, Yokohama National University

• Kaminoyama Meguru

  Faculty of Engineering, Yokohama National University

Abstract

The kneading process is widely used in various industries. When wet particles are mixed, the double-bladed kneader is one of the most useful instruments. We study the power consumption of a double-bladed kneader. The power is a very important factor in kneader designing and the examination of kneading conditions. In this paper, we propose an estimation method of the power consumption for double-bladed kneaders of various geometrical con-figurations based on the relation of the power number, N_P, and the modified Reynolds number, Re′. The influences of the vessel type, blade shape, wet particle volume and blade thickness on the power index, β, and the equivalent yield stress, (τ_c/B) were investigated. The influence of the geometrical configuration of a kneader on β and (τ_c/B) was explained using the dimensionless wet particle volume, V/v, and the dimensionless effective shearing area, S/s, respectively. These relations were correlated as a power expression. The equations obtained could be used to estimate the values of β and (τ_c/B) with errors of ±5% and ±10%, respectively. The applicability of these equations was examined in experiments using wet CaCO₃ particles and wet kaolin particles. Furthermore, in this study, the power consumption of various kneaders was estimated concretely. As a result, it was shown that the power consumption could be estimated with good accuracy.

Journal

• JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

  JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 39 (10), 1041-1049, 2006

  The Society of Chemical Engineers, Japan

Keywords

• Double-Bladed Kneader
• Power Consumption
• Wet Particle
• Feed Volume
• Blade Thickness

Details

• CRID: 1390282679546849536
• NII Article ID: 10018326789
• NII Book ID: AA00709658
• DOI: 10.1252/jcej.39.1041
• ISSN: 18811299
• ISSN: 00219592
• NDL BIB ID: 8512806
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I8512806
• Web Site: http://www.jstage.jst.go.jp/article/jcej/39/10/39_10_1041/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed