Korean Journal of Metals and Materials (대한금속재료학회지)

The Korean Institute of Metals and Materials (대한금속재료학회)
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Water Model Experiments of the Mixing Behavior of Polypropylene Particles by Vortex Stirrer

와류식 교반기를 이용한 폴리프로필렌 입자의 혼합 거동에 대한 수모델 연구

  • Jung, Jaeyong (Korea University, Department of Materials Science and Engineering) ;
  • Lee, Joonho (Korea University, Department of Materials Science and Engineering) ;
  • Lee, Hyoungchul (Hyundai Steel, Department of Production Technology) ;
  • Ki, Joonseong (Hyundai Steel, Department of Production Technology) ;
  • Hwang, Jinill (Hyundai Steel, Department of Production Technology)
  • 정재용 (고려대학교 공과대학원 신소재공학과) ;
  • 이준호 (고려대학교 공과대학원 신소재공학과) ;
  • 이형철 (현대제철 제품기술팀) ;
  • 기준성 (현대제철 제품기술팀) ;
  • 황진일 (현대제철 제품기술팀)
  • Received : 2011.12.21
  • Published : 2012.02.25
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Abstract

Water model experiments were carried out to understand the mixing behavior of reducing agents in molten slag through vortex stirrer, which makes use of a gravitational energy to mix reducing agent in the molten slag without imparting artificial energy. At a water flow rate of 6 L/min vortex was not generated, and a stable vortex was formed when the water flow rate was 7 L/min or higher with the present experimental apparatus. Water level increased linearly with increasing the water flow rate. In the upper vortex region, the vertical and horizontal velocities slightly decreased with increasing the water flow rate, whereas those in the lower vortex region increased remarkably. Accordingly, strong mixing behavior was obtained in the lower vortex region. Owing to the strong centrifugal force, particles move downwards with approaching the funnel wall. When 40 grams of polypropylene particles added to the lower vortex, they were instantaneously mixed well.

Keywords

Acknowledgement

Grant : 에코 철강 슬래그 제조를 위한 그린프로세스 개발 - 철강 용융 슬래그 조성 및 냉각제어 프로세스 개발

Supported by : 지식경제부

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