metso minerals attrition scrubbing machines are simple, yet highly efficient units for scrubbing particles at densities of 70 - 80% solids. two opposed helix type propellers on each shaft force particles against each othe......metso minerals attrition scrubbing machines are simple, yet highly efficient units for scrubbing particles at densities of 70 - 80% solids. two opposed helix type propellers on each shaft force particles against each other, resulting in intense scrubbing, polishing and disintegration. efficiencies generally increase with and increase of the density of the pulp, as particles have more frequent grain to grain contact. the twin propellers, mounted on a shaft inside a tank, are supported by a heavy-duty steel structure. shafts are coupled to either gearbox or spindle bearing drives. an opening in each cell partition allows pulp to flow through the machine. machines are usually supplied with two, four or six cells, with each cell ranging in volume from 4 to 9900 liters. (1cubic foot to 359 cubic foot). odd cell arrangements are also available as custom supply
