Fluidized Bed Jet Mill | Ultrafine Grinding for Battery, Pharma & Ceramic Powders

Name: Fluidized Bed Jet Mill
Brand: Dewei Micronano

Equipment arrangement shown for reference. Final configuration depends on the material and agreed project requirements.

Milling and classification in one system

A fluidized bed jet mill uses gas jets to bring particles into collision. An integrated classifier separates fine powder and returns coarse material to the grinding zone. Start with the material and required particle-size distribution.

Compare particle size with throughput, recovery, and temperature behavior.
Choose contact materials around abrasiveness, cleaning, and allowable impurities.
Review gas supply and material hazards before selecting air or an inert-gas circuit.

Working Principle

Process Flow

Compressed Air

Laval Nozzle
Supersonic Jet

Fluidized Bed
Particle Collision

Vortex Classifier
Precise Separation

Cyclone
Collection

Product Outlet

RECYCLE — Oversize particles return to grinding zone for further size reduction

Key Features

Precise Particle Size Control

Stepless classifier speed adjustment. D97 2–150 µm can be set accurately with high batch-to-batch consistency.

Media-Free Grinding

Particle collisions provide grinding action without grinding balls. Contact surfaces can still wear; select materials and contamination checks around the powder.

Low Temperature Rise

Adiabatic gas expansion provides a cooling effect, making the system suitable for heat-sensitive APIs and active materials.

Continuous Operation

Fluidized bed design supports extended continuous production runs, suited for large-scale manufacturing.

Ceramic Lining Option

Grinding chamber and nozzles can be fitted with full ceramic lining for battery cathode materials and pharmaceutical high-purity applications.

Inert Gas Compatible

Nitrogen or argon circuits can be assessed for compatible materials. Gas choice, oxygen limits, and protective measures require a material-specific review.

Applications by Industry

Industry	Typical Materials
Battery & New Energy	Cathode materials (NCM, LFP, LCO), anode graphite, solid-state electrolyte
Pharmaceutical	APIs, herbal extracts, excipients, inhalation powders
Advanced Ceramics	Alumina, zirconia, silicon carbide, silicon nitride
Fine Chemicals	Catalysts, specialty coatings, pesticides, dyes
Minerals	Barium sulfate, calcium carbonate, kaolin, mica

Model Specifications

The figures below are reference values for typical materials. Actual capacity varies with material density, hardness, and target particle size.

Model	Ref. Capacity	Product Size D97	Feed Size
DWQ-2A	0.5–20 kg/h	≥2.5 µm	≤10 mm
DWQ-5A	5–50 kg/h	≥2.5 µm	≤10 mm
DWQ-10A	20–100 kg/h	≥2.5 µm	≤10 mm
DWQ-20A	80–400 kg/h	≥2.5 µm	≤10 mm
DWQ-30A	200–1000 kg/h	≥2.5 µm	≤10 mm
DWQ-40A	400–2000 kg/h	≥2.5 µm	≤10 mm

Request a Selection Proposal

Material name, target particle size, capacity, and safety requirements are the key inputs for equipment selection. The more detail you provide, the more accurate the proposal. Sample testing is recommended before final selection.

Material name, application, and safety risks (flammable / oxidation-sensitive)
Target particle size: D50 / D90 / D97 or residue specification
Hourly capacity and continuous run duration
Whether ceramic lining or inert gas protection is required

Contact Us

Send your material parameters and requirements. We will provide an initial selection recommendation and sample testing plan.

Submit Inquiry Arrange Sample Testing

Phone: +86-816-2680206

Frequently Asked Questions

How fine can a fluidized bed jet mill grind?

Typically D97 5–150 µm and D50 1–50 µm for common materials. With optimized parameters, finer results are achievable on certain materials. Actual fineness depends on hardness, brittleness, and target particle size — sample testing is recommended to confirm.

What are the advantages over mechanical grinding?

Jet milling provides media-free grinding and can be evaluated where temperature or contamination matters. Compare it with mechanical milling using the same material, product target, recovery requirements, and utility assumptions; suitability is application-specific.

Is ceramic lining standard or optional? Which materials require it?

Ceramic lining is an option for applications where contact-surface wear or metallic contamination is a concern. Selection depends on abrasiveness, allowable impurities, cleaning, and trial results; it is not automatically required for every material in an industry.

Can flammable or explosive powders be processed?

A protected-atmosphere configuration may be suitable after an engineering review. Provide the SDS and available hazard data so that gas compatibility, oxygen limits, sealing, instrumentation, and required protective measures can be assessed.

How do we confirm the equipment suits our material?

We recommend sending a material sample (typically 1–5 kg) for a trial run. The test report confirms target particle size achievability, capacity trend, wear risk, and system configuration recommendation, before formal quotation and order.

What should we agree before a material trial?

Agree the target distribution and test method, throughput, recovery, temperature limits, and contamination checks. Evaluate the results together before choosing a production configuration.