NOVELTY - The torrefaction apparatus (10) has a drum (14) having a biomass inlet (18) and a torrefied material outlet (20). A furnace (16) positioned outside the drum, heats the drum so that torrefaction temperature is set in the drum. A gas inlet conduit (42) is extended to the drum from a source of inert gas, so as to create an atmosphere in the drum which promotes torrefaction.    USE - Biomass torrefaction apparatus.    ADVANTAGE - By providing lifting elements that span between adjacent turns of auger, the biomass in the pocket formed by lifting element and portions of auger, is lifted towards top dead center position of drum and then dropped back, thus the biomass is mixed while promoting torrefaction of entire mass. The torrefied biomass having high output of torrefied biomass can be created at low investment cost while minimizing the damage caused to environment during the process.    DETAILED DESCRIPTION - The drum is rotated about its longitudinal axis. Several pipes (40,44) that are mounted within the drum are extended along the drum, where each pipe is provided with an inlet and an outlet end so that hot gases are fed through the pipes. The inlet ends of pipes are connected to the furnace so that furnace gases flow through the pipes. The biomass lifting elements are protruded inwardly from the cylindrical wall of drum. The lifting elements of drum are spanned between adjacent turns of auger. Each lifting element and portions of auger are positioned adjacent to the lifting element to form a pocket. A pipe is extended from outlet to furnace for supplying combustible gases produced by torrefaction of the biomass to furnace. A steam trap is provided in pipe for removing water from gases flowing in pipe. The furnace gases are supplied to the drum through gas inlet conduit. An INDEPENDENT CLAIM is included for process for producing torrefied biomass products, which involves supplying biomass into a drum so as to create an inert atmosphere including traces of oxygen in the drum which promotes torrefaction. An auger is rotated within the drum, to move the biomass along the drum.    DESCRIPTION OF DRAWING(S) - The drawing shows a side view of the torrefaction apparatus.    Torrefaction apparatus (10)    Drum (14)    Furnace (16)    Biomass inlet (18)    Torrefied material outlet (20)    Pipes (40,44)    Gas inlet conduit (42)