An electromechanical nixtamalization system consisting of a rotary reactor, which turns on a horizontal axis and has a single-piece inner steel container without internal blades. It has resistors, a ceramic fiber layer, and a detachable stainless steel plate, and is fed by the maize grains introduced into an upper receiving hopper, and a cooling vat with a lid and an interior and intermediate surface, as well as a cooling chamber located between the interior and intermediate walls, coated in a high-pressure polyurethane lining.