The Nauta® Conical Screw Mixer is a batch mixer specially designed for segregative, free-flowing powders and pastes. The Nauta® Conical Screw Mixers is famous for its low-intensity mixing and is a pioneer in mixing technology. It especially suited to delicate products and processes where very accurate results are required and is synonymous with gentle mixing of large volumes of up to 100,000 liters.

• Cantilevered Screw design (no bottom support)
• Belt drive systems available for sanitary applications – no lubrication inside the vessel
• Clean in place designs CIP/SIP
• Designed for chemical, pharmaceutical, mineral & food

Applications:

• Mixing and homogenization of powders, pastes and slurries
• Granulation or agglomeration of powders
• Addition or injection of liquids into dry powders
• Reaction under vacuum or pressure conditions
• Heating and cooling of powders
• De-aeration or densification of powders
• Homogenization of particle size and color

The basic design consists of a cylindrical screw located at the vessel wall that conveys product from the bottom of the conical vessel to the product surface. The screw is attached to an arm which rotates around the perimeter of the vessel causing convective mixing and shear. The particles at the surface opposite the screw accelerate downward in a mass flow by gravity as the diameter of the vessel decreases. The three actions result in a unique three dimensional mixing action.