Air Dense Medium Fluidized Bed for Dry Beneficiation of Coal: Technological Challenges for Future

作者：Mohanta S; Rao C S; Daram A B; Chakraborty S; Meikap B C^*

来源：Particulate Science and Technology, 2013, 31(1): 16-27.

DOI：10.1080/02726351.2011.629285

• Air dense medium fluidized bed
• magnetically stabilized fluidized beds
• minimum fluidization velocity
• vibrated fluidized bed

Air dense medium fluidized bed (ADMFB) offers a better alternative approach for dry coal beneficiation. In recent years, there has been a rapid advancement in the understanding of fluidized bed behavior and a great deal of work has been done to make this process competitive with conventional wet beneficiation processes. At the same time, much information is available in the general technical literature concerning various aspects of ADMFB; however, this is often uncoordinated information and widely dispersed. So, it is necessary to provide the adequate information systematically, which offers researchers an effective and easy way to obtain specific details. This review critically evaluates the understanding of different operating parameters that affect the cleaning performance of this equipment. Then, following the discussion of different operating parameters, we describe three recent practical developments in ADMFB: the dual-density fluidized bed, vibrated fluidized bed, and magnetically stabilized fluidized bed. Finally, some challenging issues that need special attention are suggested in the conclusion for further improvement of this process.

• 出版日期2013-1-1