Waitedg........my thoughts would be that the cost effectiveness of the KDS via the combined drying/grinding of biomass in one step might be the answer.
But you might try emailing AURI for such process questions. They are working with FASC and MnVap on the project in Minnesota, paid for in part by Xcel Energy.
"Agriculture Utilization Research Institute (AURI) has been contracted to test the feedstocks, the final pellets and to analyze the KDS machine. Preliminary results in the testing show the KDS’s ability to produce both a quality and consistent product for pelleting."