Reversing drum mixers are similar to non-tilting type mixers but in this case reversal of rotation takes place for different action.
The drum has two openings, one end is for pouring materials and other end is for discharge of mix. The drum rotates about its horizontal axis. The rotation of drum takes place in one direction for mixing and in opposite direction for discharging.
Two different set of blades are arranged for mixing and discharging. They are suitable for dry concrete mixes.