Abstract: An experimental apparatus was set up to investigate the particles mixing and transport in a rotating cone.The effects of cone rotational frequency，feed rate and the cross section of overflow gate on the hold-up and residence time of particles in the cone were examined for different conditions.The results showed that it was absolutely possible for the rotating cone to control particles transport and ensure a suitable residence time of particles simultaneously by proper structural design and operational means.The erected ring wall could prolong the residence time of particles in the cone.The blender was important to particles mixing and transport in the rotating cone.The particle hold-up in the rotating cone tended to increase with the increase of feed rate and with the decrease of cone rotational frequency.The residence time was inversely proportional to feed rate and cone rotational frequency.The increase of the overflow gate cross section tended to reduce hold-up and the residence time of particles in the rotating cone.