Journal of the Korean Society of Manufacturing Technology Engineers (한국생산제조학회지)

The Korean Society of Manufacturing Technology Engineers (한국생산제조학회)
권호 표지
DOI QR코드

DOI QR Code

Effects of Operating Conditions of an Air-Classifier Mill on the Particle Size of Fine Powder

공기분급식 미분쇄기의 운전조건이 미세분말의 크기에 미치는 영향

  • Received : 2016.10.11
  • Accepted : 2016.12.02
  • Published : 2016.12.15
Download PDF
⟨ Previous Next ⟩

Abstract

This paper investigates the effects of operating conditions of an air classifier mill (ACM) on the particle sizes of PVC and rice hull. Based on the Box-Behnken matrix, the pulverization experiments were performed considering three operating factors: the air flow rate, the classifier speed and the mill speed. The response surface methodology was applied to identify the effects of the operating factors on the particle size. Results show that the particle sizes are governed by the linear variations of the operating factors. As less air is supplied and the mill rotates more slowly, the powder of both PVC and rice hull becomes finer. Furthermore, the classifier speed has a significant effect on the PVC powder but almost no effect on the rice hull powder. Thus, it is found that strong interactions exist between the material characteristics of a particle and the operating conditions of the ACM.

Keywords

References

  1. Marcotte, E., 2015, Achieving Particle Size Reduction with a Multirow Cage Mill, Powder and Bulk Eng., 29:1 83-86.
  2. Jarrard, M., 2006, Effect of Cyclone Assisted Milling on Legume Flour Characteristics and Functionality in Selected Food Products, A Thesis for a Master, Univ. of Georgia, UAS, 4-34.
  3. Shapiro, M., Galperin, V., 2005, Air Classification Of Solid Particles: A Review, Chem. Eng. and Proc., 44 279-285. https://doi.org/10.1016/j.cep.2004.02.022
  4. Voorhees, R., 2013, How to Operate an Air Classifier Mill to Meet Your Fine Grinding Goals, Powder and Bulk Eng., 26:6 23-27.
  5. Johansson, R., Evertson, M., 2012, CFD Simulation of a Gravitational Air Classifier, Minerals Eng., 33 20-26. https://doi.org/10.1016/j.mineng.2012.01.007
  6. Mahdi, I., Samira, R. Akbar, J., 2009, Computer Simulation of Particle Size Classification in Air Separators, Iran J. Chem., 28:4 70-78.
  7. Jain, S., Mulay, M., Singh, P., Bhattacharya, B., 2006, Prediction of Particle Size of Ammonium Perchlorate during Pulverisation, Defence Science J., 56:3 423-431. https://doi.org/10.14429/dsj.56.1909
  8. Canakci, A., Erdemir, F., Varol, T., Patir, A., 2013, Determining the Effect of Process Parameters on Particle Size in Mechanical Milling using the Taguchi Method: Measurement and Analysis, 40 3532-3540.
  9. Qiu, P., Cui, M., Kang, K., Park, B., Son, Y., Khim, E., Jang, M.., Khim, J., 2014, Application of Box-behnken Design with Response Surface Methodology for Modeling and Optimizing Ultrasonic Oxidation of Arsenite with $H_2O_2$, Cent. Eur. J. Chem., 12:2 164-172. https://doi.org/10.2478/s11532-013-0360-y
  10. Manohar, M., Joseph, J., Selvaraj, T., Sivakumar, D., 2013, Application of Box-behnken Design to Optimize the Parameters for Turning Inconel 718 using Coated Carbide Tools, Int. J. of Scientific & Eng. Res., 4:4 620-642.