Wikipedia
A Turbo mixer, also known as high speed mixer or tank mixer, is a type of industrial mixer used in PVC application for mixing raw materials to form a free-flowing powder blend.It is composed of a cylindrical tank with a mixing tool assembled on the bottom that generally operates at a peripheral speed of between 20 and 50 m/s depending of the material that we need to blend. The material is thus heated inside the mixer and thanks to the mechanical energy imparted by the mixing tool and material and also by the mutual impacts of particles. During this phase, the Turbo-mixer creates an axial vortex and inside the mixer the blades conformation and position guarantees dispersion of material.
The typical uses of the Turbo mixer is not only for the production of PVC, Dry-blend rigid or plasticized but it is also used for other kind of thermoplastic composites (as Master-Batch, Wood Plastic Composites, Additives, Thermoplastics Polymers).The largest high-speed mixer known on the market has a tank volume of 2500 L which correspond to a PVC batch size about 1060 L and is combined to a horizontal cooler 8600 L. It was manufactured by the Italian company PROMISING S.r.L. in 2014.To avoid thermal degradation it is usually combined with a cooler that cool down the dry blend to the temperature of 45-55 C. Due to the poor heat conductivity of the cooler, the latter is normally larger three times than the mixer because the cooling time is proportional to the contact surface.