oa South African Journal of Chemical Engineering - Applicability of the air dense medium fluidized bed separator for cleaning of high-ash Indian thermal coals : an experimental study

Volume 16, Issue 1
  • ISSN : 1026-9185



The air dense medium fluidized bed separator which has been developed for the dry beneficiation of coal and recognized as a low cost and high efficiency process. In some cases the efficient beneficiation process are not found to be very effective for the Indian coals due to their typical washability characteristics. So a systematic study has been carried out to verify the suitability of this process by considering three different Indian coals of different characteristics. The results show that this separation process is quite efficient for the beneficiation of coal in the size range of -50+25 mm with E values in the range of 0.037-0.055. However, lower separation efficiency for finer coal of -13+4.75 mm size indicates towards the non-suitability of the process. Based on this study, the air dense medium separation process was established to be a possible alternative to the conventional wet beneficiation method for processing coarser size Indian coals.

Loading full text...

Full text loading...


Article metrics loading...


This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error