A ring-pan mixer has a circular trough in which several mixing tools rotate. The cylinder axis of the chamber and the axis of rotation of the mixing tools are identical. In this type of mixer, the circumferential speed of peripheral mixing tools is greater than that of mixing tools located nearer the axis of rotation.
Ring-pan mixers have a simple design. The mixing tools are attached to a central drive shaft. In concrete plants, ring-pan mixers are particularly popular for precast element production.