Air classification is a method of separating particles based on their density, shape and aerodynamic properties. Volt Carbon Technologies has optimized its air classifiers through computational fluid dynamics. One of Volt Carbon Technologies’ earlier generation air classifier is shown here, with air moving through the system horizontally from right to left as material crushed to 12 mesh is introduced from the top. A diffuser further breaks down particles which are then sorted into bins at the bottom of the air classifier. The denser particles settle faster due to their weight, while the lighter particles are carried farther along with the air current before settling. The airflow through the classifier is adjustable, meaning the system can be tuned to classify different material properties as needed.