In the field of powder and granule mixing, the Conical Screw Mixer has established itself as an industry-standard blending device across pharmaceuticals, food processing, chemicals, new energy battery materials, and many other sectors. Its unique operating principle and superior mixing performance make it the go-to choice for applications requiring high uniformity, low energy consumption, low residue, and minimal particle degradation.
The Conical Screw Mixer (also known as a cone screw mixer or Nauta® mixer) is an innovative blending machine that combines high mixing homogeneity with gentle product handling. Originally invented by Dutch engineer J.E. Nauta in 1939, over 15,000 units have been sold worldwide to date. It is widely used in pharmaceuticals, food and nutrition, chemicals, pigments, battery materials, and many other industries.
The Conical Screw Mixer operates on a unique combination of planetary rotation and screw self-rotation. The screw's compound motion within the conical vessel generates three distinct flow patterns:
This three-dimensional mixing action delivers fast, homogeneous results, with typical mixing cycles of only 5–15 minutes.
The low-shear design of the Conical Screw Mixer generates minimal heat and no mechanical damage, making it ideal forheat-sensitive, friable, or high-value materials such as active pharmaceutical ingredients (APIs) and fine chemicals.
The mixer achieves an outstanding mixing ratio of 1:100,000, ensuring even trace additives are uniformly distributed throughout the main batch. Consistent mixing quality is maintained across a broad fill range of 15% to 100% of working capacity.
The conical geometry, combined with a bottom-center discharge valve, enables complete emptying of the vessel. Residual material can be as low as 0.001% (depending on material characteristics), significantly reducing the risk of cross-contamination between batches.
With an average screw speed of approximately 70 rpm and an arm speed of only 1–2 rpm, the mixer consumes significantly less energy than many alternative blending technologies. Its vertical design also minimizes the equipment footprint.
Beyond mixing, the Conical Screw Mixer can be equipped with heating/cooling jackets, vacuum systems, spray nozzles, and other auxiliaries to support combined mixing, drying, reaction, and cooling in a single unit.
The Conical Screw Mixer is suitable for a wide variety of material types:
| Material Type | Typical Applications |
|---|---|
| Powder–powder blending | Pharmaceutical intermediates, food additives, battery cathode/anode materials, pigments, dyes |
| Powder–liquid blending | Wet granulation, liquid spraying, surface wetting treatments |
| Specialty morphologies | Fibrous, flake-like, or ultra-fine powders that tend to agglomerate |
Key industries served: Pharmaceuticals, food and nutrition, fine chemicals, lithium battery materials, cosmetics, carbon black, agrochemicals, paints and coatings, and more.
To meet specific process requirements, the Conical Screw Mixer offers a wide range of customization options:
The Conical Screw Mixer is available in a full spectrum of sizes, from laboratory-scale units (5L) up to large production-scale systems (100,000L), accommodating virtually any capacity requirement.
Whether you are processing fine chemicals, pharmaceutical ingredients, food additives, or new energy materials, the Conical Screw Mixer delivers a high-performance, gentle, and precise mixing solution. For more detailed technical specifications or a customized proposal tailored to your application, please do not hesitate to contact us – our team is ready to assist you.
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