New Study Shows the Potential of Mixing Woody Biomass Sources in a Hammermill

Research completed in cooperation between the Wood Pellet Association of Canada and UBC’s Biomass and Bioenergy Research Group found that hammer milling a heterogenous mix of feedstock consisting of unground forest residue, unground sawdust, ground forest residue and ground sawdust is possible without any loss of productivity.

Post-doctoral researcher, Dr. Jun Sian Lee conducted the study to understand the grindability and friability (the tendency of a solid substance to break into smaller pieces under stress or contact) of woody biomass such as sawdust and forest residue. The findings  demonstrate that introducing a more heterogenous feedstock into a hammermill will not necessarily lower hammermill productivity.  This would reduce the need to stratify the feedstock before hammer milling.

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