Development of numerical model for estimation of grinding rate of particles under the fluidization

H. Takahashi, K. Chikamori, T. Yamamoto, H. Aoki, T. Miura

Research output: Contribution to journalArticle

Abstract

An accumulation of coke fine in blast furnace which caused by an operation with pulverized coal injection, makes decrease of air permeability in the furnace. One of the factors of this problem is that coke particles are impacting each other and coke fine generates in the raceway. However, it is so high temperature and pressure in raceway that it is very difficult to admeasure various parameters of coke grinding phenomenon. Therefore, a numerical model for estimation of grinding rate is required. We developed a numerical model for estimation of the grinding rate using result of both analysis of gypsum particles behavior and grinding experiment with gypsum particles. The model is based on grinding energy calculated by combining measured grinding rate of gypsum particles in a rotational drum with analyzed data of behavior of the particles. Additionally, we examine the validity of the numerical model to apply to a spouted bed. Thereby we verified qualitative validity of the model.

Original languageEnglish
Pages (from-to)627-634
Number of pages8
JournalTetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
Volume87
Issue number10
DOIs
Publication statusPublished - 2001 Oct

Keywords

  • Brittle materials
  • Granular materials
  • Grinding
  • Particle dynamics
  • Simulation
  • Spouted bed

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Metals and Alloys
  • Materials Chemistry

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