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Product Introduction
Conical Screw Mixer (Nauta Type)
High-performance, low-shear batch mixing for powders, pastes, and slurries
Gentle mixing that achieves exceptional homogeneity while maximizing particle integrity.
Our Nauta-type conical screw mixer is designed for gentle, low-shear batch mixing of free-flowing, fragile, segregation-prone powders, as well as pastes and slurries. It achieves outstanding mixing homogeneity while maximizing particle integrity and provides predictable scale-up from laboratory trials to production batches. Featuring a conical vessel and cantilevered orbiting screw design, this mixer ensures precise, energy-efficient mixing and is a reliable solution for a wide range of industrial powder and bulk solids handling applications.
Key Advantages
Working Principle
This mixer is a convective, low-shear batch mixer that combines axial, radial, and tangential flow to achieve thorough, precise homogenization:
-
The rotating cantilevered screw conveys material upward along the wall of the conical vessel;
-
The orbiting arm drives the screw in a circular motion around the cone;
-
Gravity returns the material downward, creating a continuous, uniform mixing cycle with minimal shear;
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Material is loaded from the top manually, by big bag, or through pneumatic or mechanical systems;
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The screw operates at approximately 70 rpm, while the orbiting arm operates at 1–2 rpm, with adjustable tip speed (0.5–2 m/s);
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The bottom discharge valve enables complete emptying for direct transfer to downstream processes.
Extensive Process Flexibility
-
Gentle mixing: Suitable for free-flowing/segregation-prone powders, pastes, slurries, and liquid-powder mixtures.
-
Powder humidification and coating: With an intensifier, uniform liquid distribution can be achieved.
-
Granulation: Granulation of bulk solids under controlled conditions.
-
Temperature control: Heating or cooling during mixing.
-
Drying: Atmospheric or vacuum drying (optional solvent recovery).
-
Activated hopper function: Continuous feeding to fluidized beds or extruders, with optional back-mixing function.
Optional Accessories and Customized Solutions
-
ISEM ball segment valve – for optimized powder discharge
-
Nauta Minimix laboratory-scale mixer – for formulation development
-
CIP/SIP cleaning system – compliant with hygiene standards
-
Vacuum/pressure operation kit
-
Intensifier for solid-liquid coating
-
Solvent recovery system for vacuum drying
-
Customized ATEX-compliant explosion-proof components
Ideal Applications
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Pharmaceuticals: Active pharmaceutical ingredients (API), pharmaceutical powders, and granules.
-
Batteries and New Energy: Battery materials, metal powders, and conductive additives.
-
Chemicals: Catalysts, carbon black, polymer powders, and detergent formulations.
-
Food and Beverages: Cocoa powder, sugar, tea, dairy powders, and food additives.
-
Animal Feed: Fish feed, compound feed, and feed additives.
-
Other Industries: Cosmetic powders, industrial pigments, and ceramic powders.
Why Choose Our Conical Screw Mixer?
-
Proven design: Based on the classic Nauta mixer—mature, reliable, and scalable from laboratory to production scale.
-
Product integrity: Low-shear technology prevents breakage of fragile/high-value particles.
-
Cost-effectiveness: Energy-efficient operation + complete discharge = minimized waste.
-
Hygiene and safety: ATEX-compliant; optional CIP/SIP; meets GMP standards.
-
Customization: A complete capacity range and accessories are available for tailored solutions.
-
Easy operation and maintenance: Simple loading and unloading, with low maintenance costs.
Technical Parameters
Conical Screw Mixer (Nauta Type)
High-performance, low-shear batch mixing for powders, pastes, and slurries
Gentle mixing that achieves exceptional homogeneity while maximizing particle integrity.
Our Nauta-type conical screw mixer is designed for gentle, low-shear batch mixing of free-flowing, fragile, segregation-prone powders, as well as pastes and slurries. It achieves outstanding mixing homogeneity while maximizing particle integrity and provides predictable scale-up from laboratory trials to production batches. Featuring a conical vessel and cantilevered orbiting screw design, this mixer ensures precise, energy-efficient mixing and is a reliable solution for a wide range of industrial powder and bulk solids handling applications.
Key Advantages
Working Principle
This mixer is a convective, low-shear batch mixer that combines axial, radial, and tangential flow to achieve thorough, precise homogenization:
-
The rotating cantilevered screw conveys material upward along the wall of the conical vessel;
-
The orbiting arm drives the screw in a circular motion around the cone;
-
Gravity returns the material downward, creating a continuous, uniform mixing cycle with minimal shear;
-
Material is loaded from the top manually, by big bag, or through pneumatic or mechanical systems;
-
The screw operates at approximately 70 rpm, while the orbiting arm operates at 1–2 rpm, with adjustable tip speed (0.5–2 m/s);
-
The bottom discharge valve enables complete emptying for direct transfer to downstream processes.
Extensive Process Flexibility
-
Gentle mixing: Suitable for free-flowing/segregation-prone powders, pastes, slurries, and liquid-powder mixtures.
-
Powder humidification and coating: With an intensifier, uniform liquid distribution can be achieved.
-
Granulation: Granulation of bulk solids under controlled conditions.
-
Temperature control: Heating or cooling during mixing.
-
Drying: Atmospheric or vacuum drying (optional solvent recovery).
-
Activated hopper function: Continuous feeding to fluidized beds or extruders, with optional back-mixing function.
Optional Accessories and Customized Solutions
-
ISEM ball segment valve – for optimized powder discharge
-
Nauta Minimix laboratory-scale mixer – for formulation development
-
CIP/SIP cleaning system – compliant with hygiene standards
-
Vacuum/pressure operation kit
-
Intensifier for solid-liquid coating
-
Solvent recovery system for vacuum drying
-
Customized ATEX-compliant explosion-proof components
Ideal Applications
-
Pharmaceuticals: Active pharmaceutical ingredients (API), pharmaceutical powders, and granules.
-
Batteries and New Energy: Battery materials, metal powders, and conductive additives.
-
Chemicals: Catalysts, carbon black, polymer powders, and detergent formulations.
-
Food and Beverages: Cocoa powder, sugar, tea, dairy powders, and food additives.
-
Animal Feed: Fish feed, compound feed, and feed additives.
-
Other Industries: Cosmetic powders, industrial pigments, and ceramic powders.
Why Choose Our Conical Screw Mixer?
-
Proven design: Based on the classic Nauta mixer—mature, reliable, and scalable from laboratory to production scale.
-
Product integrity: Low-shear technology prevents breakage of fragile/high-value particles.
-
Cost-effectiveness: Energy-efficient operation + complete discharge = minimized waste.
-
Hygiene and safety: ATEX-compliant; optional CIP/SIP; meets GMP standards.
-
Customization: A complete capacity range and accessories are available for tailored solutions.
-
Easy operation and maintenance: Simple loading and unloading, with low maintenance costs.
Why Choose Guibao
Decades of Expertise, Strong Manufacturing Strength
With four decades of pharmaceutical equipment expertise, we deliver high-standard solutions through mature processes and core technologies.
International Certifications, Assured Quality and Compliance
ISO 9001, CE, and other international certifications ensure standardized production, reliable quality, and dependable service at every stage.
University-Industry R&D, Customized Technical Support
Together with Jiangnan University, we operate an intelligent manufacturing R&D center, providing customized equipment optimization, production line upgrades, and MES/SCADA solutions for smarter operations.
Full-Lifecycle Concierge Service, Worry-Free Support Throughout
Full-lifecycle support from planning to maintenance ensures stable production. Guibao Group delivers efficient equipment and complete production lines with advanced technology and responsive service.
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