Tsymbal B. Improving wear resistance of a screw extruder for production of biomass briquettes in acidic and alkaline environments

The object of the research is the processes of friction and wear in tribosystems of screw extruders which work in conditions of acidic, abrasive and aggressive environment. The purpose of the work is to improve wear resistance of operating elements of screw extruders that work on different types of biomass by introducing alkaline additives into raw material before pressing. For the first time, we have got dependency of the tribosystem wear rate with simultaneous action of abrasive and corrosive wear in terms of different environments. In descending order, we determined a ranking of factors influence on the wear process, which includes abrasivity, active acidity of environment and loads. Taking into account the received ranking, we proved compatible materials in tribosystems of extruders which can improve their operating life and reduce friction losses. We have got further development - physical modeling of wear rate and friction losses in tribosystems of extruder, which unlike the known ones, takes into account interaction of abrasive, corrosive and mechanical wear.