Ball mill
Fives FCB

Fives FCB owns a remarkable tool for mill sizing, in the form of a grindability test so-called "FCB-Index" simulating for the best the grinding in a tube mill. Indeed, Fives FCB has developed and improved for many years a precise basic grindability batch test needing less than 50 kg of material and which makes it possible to define:

The specific energy necessary to grind a given material when using an optimised closed circuit grinding plant with a modern separator
The characteristics of the finished product which will be obtained in the a.m. industrial optimised circuit
The corrective solutions allowing to reach the optimum performances from an existing industrial grinding plant.

Using this tool, Fives FCB is capable to size a new grinding installation or to define the modifications of an existing one, with the determination of their expected performances (ref. "Modelling of grinding plants and grindability of materials in cement plants" - G. Flament, V Saint-Etienne, A. Cordonnier, P. Tête - World Cement 1991, Vol 22, n° 8, pp 14-26).