A model on attrition of quartzite particles as a bed material in fluidized beds

✍ Scribed by Xiumin Jiang; Lingsheng Zhou; Jianguo Liu; Xiangxin Han

• Publisher: Elsevier Science
• Year: 2009
• Tongue: English
• Weight: 320 KB
• Volume: 195
• Category: Article
• ISSN: 0032-5910
• DOI: 10.1016/j.powtec.2009.05.009

✦ Synopsis

In this paper, a model on attrition of quartzite particles as an inert bed material in fluidized beds has been established on the particle-particle collision. For the convenience of describing the attrition of quartzite particles in fluidized beds, we chose the attrition rate constant (k ARC ) as one main characteristic parameter to develop the model. In order to verify the validity of the developed model, an attrition experiment of quartzite particles has been carried out in a lab-scale circulating fluidized bed. The predicted results from the population model were close to the experimental data as far as the engineering use is concerned. Finally, a sensitivity analysis was performed by using the developed model to examine effects of initial particle diameter, attrition time, and fluidization number on k ARC .