Abstract: A housing for an aero-acoustic processing machine having rotational drive apparatus coupled to rotate an air impeller to draw air and material to be processed through an axial inlet system and expel the air and processed material through a transverse outlet. The housing includes an enclosure incorporating at least one layer of noise attenuation materials surrounding the aero-acoustic processing machine, the enclosure having a material inlet port, an air inlet port and an exhaust port for outputting processed product with air. Airflow paths that are required for operation of the aero-acoustic processing machine are provided to enable airflow into the housing whilst significantly reducing noise emission.

Abstract: The invention is an aero-acoustic comminution apparatus which includes an aero-acoustic comminution machine 10 having a cyclone chamber 12 with an inlet 14 for the material to be comminuted and an inlet 16 for the air. An electric motor 18 coupled to a shaft 20 to which an impeller 22 is coupled rotates the impeller 22 within an impeller housing 24 to draw the air and the entrained material to be comminuted into the cyclone chamber 12 and through an axial inlet system 26 into the impeller 22 and impeller housing 24 and to expel the comminuted material through the impeller housing 24 radially through a transverse outlet. The invention extends to a method of comminuting an ore material using said aero-acoustic comminution apparatus as well as an organic material.

Abstract: A housing for an aero-acoustic processing machine having rotational drive apparatus coupled to rotate an air impeller to draw air and material to be processed through an axial inlet system and expel the air and processed material through a transverse outlet. The housing includes an enclosure incorporating at least one layer of noise attenuation materials surrounding the aero-acoustic processing machine, the enclosure having a material inlet port, an air inlet port and an exhaust port for outputting processed product with air. Airflow paths that are required for operation of the aero-acoustic processing machine are provided to enable airflow into the housing whilst significantly reducing noise emission.