A stator or diffuser is an important component of a mechanical flotation cell. A stator consists of a number of blades arranged in a concentric circle with gaps to facilitate movement of slurry in the cell tank. A stator is usually mounted on the bottom of the cell tank surrounding the impeller concentrically from its bottom. The impellers and stators are moulded and coated with rubber or polyurethane for abrasion resistance.
Stator of flotation machine has the similar function with steady flow plate, which is used to eliminate spinning of slurries, keeping liquid surface stable. Slurries thrown out of the impeller get knocked with blade, a new vortex formed, which is beneficial to absorb (divide) air and foam split. As a result, design of flotation machine will affect the stability and inflating volume of foam layer.
In design of flotation machine, two main factors are: (a) distance between stator and cell; (b) port area.