Process and apparatus for treatment of biomass

In the present process for treatment of biomass, it is first heat-treated, in particular torrefiziert, so that the moisture content is lowered to below 8 wt .-%. Subsequently, the heated biomass of a mill is fed to and ground there hot, said mill for cooling of the biomass is supplied to a refrigerant and the milled biomass is discharged together with the heated coolant from the mill.