Simulation results show that twin screw rotation speed has a significant effect on mixing efficiency and particle distribution. Higher rotational speeds, such as 5000 rpm, enable efficient particle mixing in our extrusion model. We therefore chose this 5000 rpm setting to study the influence of other process parameters. It should be noted that we added a further check on mixing efficiency by monitoring AM particles in five different zones of the recirculation circuit. This showed that the distribution of AM and BC particles becomes homogeneous throughout the circuit after a few cycles in the extruder chamber and in the recirculation circuit.