F-40/B - A device for heating and mixing mud mass. Consists of a tank with a cover (with o-ring), heating elements under its bottom and on its side wall, structure rests on a supporting frame with two legs fitted to the working table. Mixer is equipped with an automatic mixing arm which is started every few minutes to maintain temperature and the right consistency of the mud mass in the container. Working parameters are presented on large display placed on portable panel. Electronic controller.