Particle flow and reaction mechanism of calcium cyanamide synthesis in a rotating drum

Abstract As a particle reactor used in many fields, the relationship between particle flow and reaction mechanism in the rotating drum still needs further exploration. The reaction process was simulated using a validated two‐fluid composite model. The results show that the reaction rate and product distribution of the reaction are influenced by the particle flow behavior. The driving force for the gas–solid reaction inside the rotating drum comes from the reaction heat. The changes in rotation speed and fill fraction, as well as the different configurations of lifters, all have an impact on the gas–solid reaction inside the rotating drum. The optimization scheme for the reactor is proposed, which combines operating parameters and lifter configuration. This work provides a reference for exploring the particle flow and reaction mechanism in the rotating drum, as well as enhancing its reaction process.