Process for producing an elastomeric compound comprising 100 phr of at least one elastomeric polymer and at least 10 phr of at least one reinforcing filler, the process comprising: - providing one or more batch mixers, each batch mixer comprising a mixing chamber, a pair of rotors housed in the mixing chamber and a piston arranged above the rotors and movable to and from the pair of rotors; - providing one or more twin-screw conical mixers, each twin-screw conical mixer having a mixing chamber provided with an inlet mouth and an outlet mouth, wherein the mixing chamber houses two conical screws, counter-rotating and converging towards the outlet mouth, said each twin-screw conical mixer being provided with a door adapted to assume a closed configuration of said outlet mouth and an open configuration of said outlet mouth; - at least one step of feeding a respective of said one or more batch mixers with at least one part of said at least one elastomeric polymer and at least one part of said reinforcing filler; - a number n of steps of mixing, in a respective of said one or more batch mixers and for a respective first predetermined time interval, in a manner so as to obtain a respective batch of elastomeric compound, each step of mixing in the respective batch mixer being followed by a respective step of completely unloading said respective batch of elastomeric compound from said respective batch mixer and, subsequently, by a respective step of feeding a respective of said one or more twin-screw conical mixers with said respective batch of unloaded elastomeric compound, wherein a first step of said number n of mixing steps immediately follows said at least one step of feeding said respective batch mixer; - a number m of steps of mixing said respective batch of elastomeric compound in a respective of said one or more twin-screw conical mixers with said door in said closed configuration of said outlet mouth for a respective second predetermined time interval, each step of mixing in the respective twin-screw conical mixer being subsequent to a respective step of said number n of steps of feeding the respective twin-screw conical mixer and being followed by a respective step of unloading said respective batch of elastomeric compound from said outlet mouth of the respective twin-screw conical mixer with said door arranged in said open configuration, wherein said numbers n and m are integers greater than or equal to one, and wherein n is greater than or equal to m. - providing one or more batch mixers, each batch mixer comprising a mixing chamber, a pair of rotors housed in the mixing chamber and a piston arranged above the rotors and movable to and from the pair of rotors; - providing one or more twin-screw conical mixers, each twin-screw conical mixer having a mixing chamber provided with an inlet mouth and an outlet mouth, wherein the mixing chamber houses two conical screws, counter-rotating and converging towards the outlet mouth, said each twin-screw conical mixer being provided with a door adapted to assume a closed configuration of said outlet mouth and an open configuration of said outlet mouth; - at least one step of feeding a respective of said one or more batch mixers with at least one part of said at least one elastomeric polymer and at least one part of said reinforcing filler; - a number n of steps of mixing, in a respective of said one or more batch mixers and for a respective first predetermined time interval, in a manner so as to obtain a respective batch of elastomeric compound, each step of mixing in the respective batch mixer being followed by a respective step of completely unloading said respective batch of elastomeric compound from said respective batch mixer and, subsequently, by a respective step of feeding a respective of said one or more twin-screw conical mixers with said respective batch of unloaded elastomeric compound, wherein a first step of said number n of mixing steps immediately follows said at least one step of feeding said respective batch mixer; - a number m of steps of mixing said respective batch of elastomeric compound in a respective of said one or more twin-screw conical mixers with said door in said closed configuration of said outlet mouth for a respective second predetermined time interval, each step of mixing in the respective twin-screw conical mixer being subsequent to a respective step of said number n of steps of feeding the respective twin-screw conical mixer and being followed by a respective step of unloading said respective batch of elastomeric compound from said outlet mouth of the respective twin-screw conical mixer with said door arranged in said open configuration,