A ball refiner device comprises a basket (23) in which a plurality of balls (24) is placed. An agitation member (28) is mounted in the basket (23) and is rotatable relative to it, so as to agitate the balls in order to refine a product placed in the basket (23). The agitation member (28) comprises selectively detachable means of attachment which can be coupled to a drive member (11) positioned in a container (6) of equipment (1), as an accessory tool of the equipment, in order to carry out preparation using products requiring a high degree of refining.
