Pharco steel colloid mills have a wide range of applications. They can always be used when it is necessary to grind substances precisely and with reproducible results while mixing them at the same time. The milling gear of a colloid mill exerts hydraulic and mechanical cutting, impact, squeezing, friction and shear forces. The phases are ground and mixed with considerable precision in an annular gap between the two major components, stator and rotor which can be infinitely adjusted by changing the axial position of the stator. Particles are ground extremely finely. Most raw materials, aggregates and agglomerates can be processed in one pass through the mill.