The stirring paddle in the kettle rotates during revolution, which makes the material flow around, so it can realize mixing (compounding) effect in a short time. The additional one or two high-speed disperser in the kettle rotate during revolution, which makes the material cut strongly and mixed, the effect is severalfold superior to an ordinary mixer. There are various blades such as frame, paddle and dough twisting frame for low speed blades that can be chosen.