Method and plant for dense pulp refining for papermaking

A method of refining dense pulp comprising the steps of:

• prearranging a stator having a perforated side wall;
• prearranging a rotor rotatable in said stator, said rotor comprising a plurality of blades having respective cutting profiles arranged at a distance d from said perforated side wall, said rotor arranged to be rotated at a peripheral speed v of said cutting profiles with respect to said stator,
• prearranging in said stator an inlet duct and prearranging externally to said stator a collection chamber having an outlet duct;
• feeding into said stator, through said inlet duct, selected pulp previously subjected to separation from solid parts, so that said blades cause the forced passage of said selected pulp between the cutting profiles of said blades and said perforated side wall, causing a refining action of said selected pulp, and so that refined fibers pass through said perforated side wall and reach said collection chamber and said outlet duct;
• wherein said stator has a circular opening and said rotor comprises a rotation shaft having a disc flange, connected to said rotation shaft and rotatable in said circular opening, and a plurality of said blades frontally connected to said disc flange.