The DZDS Series Conical Screw Mixer represents a proven solution for gentle, high‑precision blending across multiple industries. This innovative mixing equipment, also known as a Nauta®‑type mixer, combines exceptional mixing homogeneity with minimal product degradation, making it the preferred choice for pharmaceuticals, food processing, chemicals, and new energy battery materials.
What sets the DZDS Series apart is its unique three‑dimensional mixing action, which delivers consistent results in just 5–15 minutes while consuming significantly less energy than many alternative blending technologies. Available in a wide range of capacities, the DZDS Series offers solutions for applications from laboratory‑scale research to full‑scale production.
The conical screw 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. The DZDS Series builds upon this proven technology with modern engineering enhancements.
The equipment features a conical mixing vessel with one or two screws that rotate both on their own axes and around the vessel's perimeter. This planetary motion creates a continuous three‑dimensional mixing pattern that ensures thorough blending without mechanical damage to sensitive materials.
The DZDS Series 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:
| Motion Type | Description | Mixing Effect |
| Axial Movement | Screw rotates around its own axis, lifting material from the cone bottom upward along the screw flight | Vertical circulation |
| Radial Movement | Rotating arm moves the screw along the inner wall, causing material to circulate along the cone periphery | Wall‑to‑center mixing |
| Tangential Movement | Material lifted to the top falls back under gravity | Convection, shearing, and diffusion |
These simultaneous actions result in fast and intensive mixing with low power consumption and maximum uniformity. The speed of particles in the downward mass flow increases as the vessel diameter decreases, creating an efficient and gentle mixing action.
Gentle Mixing – Preserves Material Integrity: The low‑shear design generates minimal heat and no mechanical damage, making it ideal for heat‑sensitive, friable, or high‑value materials such as active pharmaceutical ingredients (APIs), fine chemicals, and food additives.
Exceptional Mixing Accuracy: The DZDS Series 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.
Low Residue – Easy to Clean: 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%, significantly reducing the risk of cross‑contamination between batches.
Energy Efficient and Compact: 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.
Process Versatility: Beyond mixing, the DZDS Series 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 DZDS Series 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.
Below are the key specifications for the DZDS Series. Please note that specific parameters may vary based on material characteristics and application requirements.
| Model | Total Volume (L) | Effective Capacity (kg)* | Power (kW) | Weight (kg) |
| DZDS‑0.3 | 300 | ~180 | 2.2‑3 | 500‑550 |
| DZDS‑0.5 | 500 | ~300 | 3‑4 | 600‑660 |
| DZDS‑1 | 1,000 | ~600 | 4‑5.5 | 1,200 |
| DZDS‑2 | 2,000 | ~1,200 | 5.5‑7.5 | 1,500 |
| DZDS‑3 | 3,000 | ~1,800 | 7.5‑11 | 2,300 |
| DZDS‑4 | 4,000 | ~2,400 | 11 | 2,520 |
| DZDS‑6 | 6,000 | ~3,600 | 15‑18.5 | 3,150‑3,700 |
| DZDS‑8 | 8,000 | ~4,800 | 18.5 | 4,500 |
| DZDS‑10 | 10,000 | ~6,000 | 18.5‑20.7 | 5,500 |
| DZDS‑15 | 15,000 | ~9,000 | 22‑24.2 | 6,600 |
| DZDS‑20 | 20,000 | ~12,000 | 37‑41 | 7,000 |
| DZDS‑30 | 30,000 | ~18,000 | 45‑52.5 | 9,200 |
*Based on bulk density of 0.6 g/cm³. For different material densities, please consult our engineering team for accurate capacity calculations.
The DZDS Series Conical Screw Mixer is suitable for a wide variety of material types across numerous industries:
| Material Type | Typical Applications |
| Powder–powder blending | Pharmaceutical intermediates, food additives, battery cathode/anode materials, pigments, dyes, detergent powder |
| Powder–liquid blending | Wet granulation, liquid spraying, surface wetting treatments |
| Specialty morphologies | Fibrous, flake‑like, or ultra‑fine powders that tend to agglomerate |
Pharmaceuticals: Active Pharmaceutical Ingredients (APIs), excipients, granules, and GMP‑compliant applications requiring sanitary design.
Food & Nutrition: Food additives, flavorings, nutritional supplements, and ingredients requiring gentle handling.
Chemicals: Fine chemicals, pigments, dyes, carbon black, and specialty chemical formulations.
New Energy Materials: Lithium battery cathode/anode materials, battery electrolytes, and advanced material preparations.
Cosmetics: Powders, pigments, and formulations requiring high purity and uniformity.
Agrochemicals: Pesticides, herbicides, fertilizers, and crop protection products.
To meet specific process requirements, the DZDS Series Conical Screw Mixer offers a wide range of customization options:
Materials of Construction
Drive Systems
Discharge Valves
Auxiliary Features
Cleaning Systems
Explosion Protection
Selecting the appropriate DZDS Series model requires considering several key factors:
Material Characteristics:
Process Requirements:
Available Installation Space:
Budget Considerations:
The DZDS Series Conical Screw Mixer delivers a high‑performance, gentle, and precise mixing solution for a wide range of applications. Whether you are processing fine chemicals, pharmaceutical ingredients, food additives, or new energy materials, this series offers the flexibility, reliability, and efficiency required for modern production environments.
With its unique three‑dimensional mixing action, low energy consumption, and exceptional mixing accuracy, the DZDS Series represents a sound investment for companies seeking to improve product quality and operational efficiency.
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