Rotor-stator cooling system for feedstock mixers

A rotor-stator cooling system for a feedstock mixing apparatus having a mixing tank, said system comprising:

• a rotor-stator assembly for dispersing feedstock, the assembly comprising a rotor element and a stator element;
• an elongated cooling dome located above and circumscribing the rotor-stator assembly, the cooling dome comprising a bottom base with a top surface, and an elongated, curved sidewall which surrounds the dome;
• a centrally located tubular member within and extending completely through the cooling dome from the top of the cooling dome to the top surface of the bottom base, a cooling chamber inside the cooling dome formed between the tubular member and the sidewall, a cooling water inlet port extending into the cooling chamber for providing cooling water to the cooling chamber, a return water outlet port extending into the cooling chamber for allowing heated water to exit from the cooling chamber, and an upper feedstock entry chamber formed within the tubular member for receiving feedstock;
• a lower feedstock entry chamber below and extending down from the rotor-stator assembly for receiving feedstock;
• and
• a driveshaft extending through the tubular member for rotating the rotor element of the rotor-stator assembly;
• wherein when cooling water enters the cooling chamber of the cooling dome upon rotation of the rotor element of the rotor-stator assembly and feedstock from the upper and lower feedstock entry chambers flows into the cooling chamber, the temperature of the feedstock is reduced by the cooling water in the cooling chamber and by the feedstock coming in contact with the cooled top surface of the bottom base, the cooled sidewall, and the cooled tubular member.