Conical Screw Mixer (also named Nauta Mixer, cone screw mixer, vertical screw mixer) consists of two screws located at the vessel wall that conveys product from the bottom of the conical vessel to the top. 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.

These versatile batch mixers are unique in many ways. Their design provides for a very gentle mixing action with low horsepower consumption. The conical vessel design allows a wide range of filling capacities and the mass flow characteristic design minimizes segregation upon discharge. Because there are no horizontal internal surfaces, products are completely discharged, minimizing product loss and providing for easy cleaning. Vessels can be designed for overpressure and under pressure operating conditions and units can be supplied with a variety of accessories including liquid injection, product samplers, high intensity lump breakers, level and temperature probes, load cells for batch weighing and jackets for heating and cooling are some examples.

  • Low Shearing and Mild Mixing
  • Big Range Batch Mixing Capacity
  • Full and Clear Discharge
  • Low Energy Consumption

Photo Gallery

Total Volume

100L – 30000L

Construction Material

Carbon Steel, SUS304 Stainless Steel, SUS316 Stainless Steel

Discharge Valve

Butterfly Valve, Electric, Flap Valve, Gate Valve, Manual, Pneumatic

Liquid Spray

CIP Clean Nozzle, Liquid Spray Nozzle


Cool Jacket, Heat Jacket

Explosion Proof

Hazardous area zone 20, 21, 22

Anciliary Device

Circular Vibration Sieve, Dump Station, Quantitive Discharge, Screw Conveyor, Storage Tank, Vacuum Conveyor

conical screw mixer, nauta mixerconical screw mixer, nauta mixer

Standard Features

  • Capacity range from 100-30000L
  • Mild Steel/Stainless Steel construction
  • Two Screws or Single Screw
  • Conical Vessel
  • Normal Temperature and Pressure inside mixer
  • Gear Reducer Motor or Cycloid Reducer
  • Oil Seal
  • Pneumatic Outlet Valve

Special Features

  • Vacuum/Pressure inside mixer
  • Heating/Cooling Jacket for mixer
  • Spraying Nozzle for liquid
  • Food Grade Grease and Oil Seal
  • Mechanical Seal
  • Explosion-proof for electricity
  • Electrical Control Panel system
  • GMP manufacturing
  • Teflon Coating for material contact part
  • Bottom Support for Screw
  • Other Special Customize Design


Processed Material:

  • Food Powder
  • Engineered plastic resins
  • Pesticides and herbicides
  • Pharmaceuticals
  • Fertilizers
  • Plastic powders
  • Rare Earth
  • Polymers
  • Chemicals
  • Talcum powders
  • Dyestuff

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