Abstract for presentation at Chemeca 2007

Attrition and Fragmentation Behavior by Micro-Hardness Parameters in Suspension-Crystallization Processes

  • Yusuke Asakuma, University of Hyogo, Japan
  • Tomoobu Terashima, University of Hyogo, Japan
  • Takahiro Honda, University of Hyogo, Japan
  • Dr Kouji Maeda, University of Hyogo, Japan
  • Dr Hideo Miki, University of Hyogo, Japan
  • Dr Keisuke Fukui, University of Hyogo, Japan

    • In chemical engineering processes in which solids are produced, the strength of the substances plays a key role. In this study, micro-level measurements of the fracture strength of K2SO4 and KDP crystals were performed under various operating conditions of an MSMPR crystallizer. The degree of attrition behavior was determined from the fracture strength, the fracture energy, the roundness of the crystal, and calculated from micro-hardness properties of K2SO4. By evaluating parameters based on micro-hardness, we demonstrated that the stirring speed was the most important of the various operation conditions in the attrition process. Moreover, fragmentation behavior of aggregated particle was considered by the same method.

    Conference Organiser - ICMS Pty Ltd