Thermally regulated closed mixer

Process for mixing a compound in a closed batch mixer comprising

• a) predetermining a minimum mixer body temperature value for starting the mixing cycle;
• b) predetermining a mixer thermal regulation system pre-heating temperature as Set Point 1;
• c) predetermining a mixer thermal regulation system working temperature as Set Point 2;
• d) predetermining the mixer body thermal hysteresis;
• e) predetermining a mixer body temperature Break Point A for switching the mixer thermal regulation system from Set Point 1 to Set Point 2;
• f) predetermining a mixer body temperature Break Point B for switching the mixer thermal regulation system from Set Point 2 to Set Point 1;
• g) directly measuring, in a continuous real-time, the mixer body temperature;
• h) comparing the mixer body temperature to the predetermined Break Point temperatures A and B;
• i) switching the mixer thermal regulation system from one Set Point to the other as a result of the above comparison.
• j) enabling the mixing cycle to start when the minimum body temperature is exceeded;
• k) introducing the materials to be mixed into the mixing chamber at intervals;
• l) continuously monitoring the mixer body temperature in real time;
• m) continuously transmitting the signal representing the monitored real time mixer body temperature value to the process control system;
• n) switching to Set Point 2 when the mixer body temperature is equal or higher than Break Point A temperature;
• and
• o) switching to Set Point 1 when the mixing cycle is not running and the mixer body temperature is lower than Break Point B temperature.