Cases

Powder Processing Case References

Explore six material-processing routes, the equipment involved, and what a sample trial needs to verify. Use these references to discuss the requirements for your own material.

01 / 06 · Graphite · Shaping and Classification

Graphite Anode Shaping Trial

Evaluate particle shape and fines removal together, so that improved morphology does not come at the expense of product yield.

Dewei graphite powder dust-collection system — Dust collection for graphite processing

Material: Artificial graphite anode powder
Objective: Improve particle shape and control the fines fraction
Process route: Multi-stage shaping with precision air classification

Trial review: Particle morphology, tap density, fines content, and product yield.

Process Notes, Equipment and FAQ

The shaping mill works with classification and collection equipment. The circulation route and operating settings are selected around the required particle shape and yield. Comparing representative samples helps determine whether the process is suitable for the intended anode material.

Related Equipment

Particle SpheronizerParticle shaping for morphology and tap-density evaluation. Air ClassifierSeparation of fines and control of the selected product fraction. Grinding and Classification LineIntegration of feeding, processing, collection, and controls.

Common Questions

Will different graphite grades behave the same way?

No. Feed morphology and particle-size distribution affect shaping behavior. Compare your own material through a representative trial.

How should shaping results be assessed?

Review particle images and tap-density measurements together with particle-size distribution and yield. Agree on the acceptance criteria before testing.

Can I start with toll processing?

Toll processing can be discussed before investing in equipment. Material suitability, batch requirements, and the available process route must be confirmed first.

02 / 06 · Pharmaceutical API · Ultrafine Milling

Pharmaceutical API Micronization Trial

Assess fineness alongside temperature behavior, cleaning requirements, and repeatability before selecting a production system.

Dewei clean grinding and powder-collection system for pharmaceutical material trials — Milling and collection equipment

Material: Heat-sensitive active pharmaceutical ingredient
Objective: Achieve the required fineness while controlling temperature rise
Process route: Laboratory jet milling with suitable powder collection

Trial review: Particle-size distribution, temperature observations, yield, and cleaning requirements.

Process Notes, Equipment and FAQ

A laboratory trial helps establish how the feed responds to jet milling and whether the target particle size is feasible. Feed condition, sampling method, product recovery, and cleaning boundaries are considered before recommending a larger configuration.

Related Equipment

Lab Jet MillSmall-sample trials before pilot or production selection. Spiral Jet MillA route to evaluate for small batches and cleaning requirements. Fluidized Bed Jet MillMilling with an integrated classifier for particle-size control.

Common Questions

Can a similar API achieve the same fineness?

Crystal form, feed size, and batch properties can change milling behavior. Test the actual material using an agreed measurement method.

How are cleaning requirements handled?

Discuss product-contact materials, cleaning access, changeover procedures, and the required quality standard during configuration. Equipment suitability must be assessed for the intended process.

Can a trial support scale-up?

Yes. Particle-size results and operating observations provide a starting point, while production output and acceptance conditions require a separate review.

03 / 06 · Metal Powders · Protective Atmosphere

Metal Powder Processing under Inert Gas

Consider atmosphere control, milling, classification, and collection as parts of one process for oxidation-sensitive metal powders.

Dewei closed-loop inert gas milling and classification equipment for metal powders — Inert gas milling and classification system

Material: Reactive or oxidation-sensitive metal powder
Objective: Control oxidation risk and define a suitable operating boundary
Process route: Closed-loop inert gas processing with oxygen monitoring

Trial review: Particle size, operating oxygen level, gas use, collection behavior, and interlock requirements.

Process Notes, Equipment and FAQ

The process combines milling, classification, and sealed collection in a recirculating protective atmosphere. Gas selection, oxygen limits, purging, and control interlocks must match the material assessment. These conditions are reviewed alongside the particle-size target.

Related Equipment

Inert Gas Jet Milling SystemJet milling and collection within a protective gas circuit. Inert Gas Mechanical MillMechanical milling combined with closed-loop atmosphere control. Air ClassifierParticle-fraction control within the configured process route.

Common Questions

Is nitrogen suitable for every metal powder?

The protective gas must be selected for the specific material. Share the material composition and safety information before the process is proposed.

How is gas consumption evaluated?

Closed-loop circulation reuses process gas, but purging, sealing, and collection affect make-up demand. Estimate consumption for the proposed configuration and operating conditions.

What information is needed before a trial?

Provide available safety data, feed size, the target product size, and known oxidation sensitivity. The technical review determines the trial conditions and sample requirements.

04 / 06 · Battery Materials · Particle-Size Control

Battery Cathode Grinding and Classification

Balance the required product size with control of coarse particles, overgrinding, and contamination from product-contact surfaces.

Dewei battery powder production-line control cabinets beside an observation window — Production-line control room

Material: Lithium iron phosphate cathode powder
Objective: Control the product-size distribution and coarse-particle tail
Process route: Jet milling, classification, and collection as an integrated system

Trial review: Particle-size distribution, coarse fraction, contamination limits, and operating stability.

Process Notes, Equipment and FAQ

The milling and classification stages are configured together to manage the target particle-size distribution. Contact materials are selected for the powder and purity requirements. Sample trials help verify the route before a production model and collection system are specified.

Related Equipment

Ceramic Lined Jet MillCeramic protection at specified product-contact areas. Fluidized Bed Jet MillIntegrated milling and classification for fine battery powders. Air ClassifierControl of selected particle fractions and coarse particles.

Common Questions

Is the average particle size enough to specify a system?

The coarse tail and distribution shape can also matter. Share the full specification and measurement method, rather than relying on one particle-size value.

How is metallic contamination addressed?

Review contact materials, wear points, collection equipment, and cleaning requirements across the complete route. Compare samples against the agreed impurity limits.

Can the same settings be used for another feed batch?

Feed size and material properties may change the response. Trial comparisons help establish the process window and the checks needed during production.

05 / 06 · Ceramics · Contamination Control

High-Purity Ceramic Powder Trial

Evaluate contact materials and particle-size control together when wear-related contamination is a critical process constraint.

Dewei stainless-steel pipe component with a ceramic lining — Ceramic-lined product-contact component

Material: Hard, high-purity ceramic powder
Objective: Limit metal introduction while achieving the required fineness
Process route: Ceramic contact components with controlled classification

Trial review: Particle-size distribution, wear behavior, and before-and-after impurity measurements.

Process Notes, Equipment and FAQ

Ceramic components can be considered at relevant contact points in the milling and transfer route. The configuration is assessed against the powder hardness, contamination limits, and required particle-size distribution. Analytical comparison is needed to verify the benefit for the actual material.

Related Equipment

Ceramic Lined Jet MillLow-contamination milling using selected ceramic contact components. Fluidized Bed Jet MillA milling route for evaluating hard and fine powders. Air ClassifierControl of product size and the coarse-particle limit.

Common Questions

Does ceramic lining mean zero contamination?

No. Contact materials are one part of the system. Feed handling, collection, cleaning, and wear must also be considered and checked against the product specification.

Will a lining determine production capacity?

Capacity also depends on the feed, equipment model, and target fineness. Evaluate output and particle size together in the trial.

What should be compared before and after milling?

Agree on particle-size and impurity measurements relevant to the product, using comparable sampling and analytical methods.

06 / 06 · Solid Electrolytes · Feasibility Testing

Solid Electrolyte Laboratory Trial

Use an enclosed trial to assess grindability and define atmosphere requirements for moisture- and oxygen-sensitive powders.

Dewei enclosed glovebox system for solid electrolyte powder processing — Enclosed glovebox processing system

Material: Moisture- and oxygen-sensitive solid electrolyte
Objective: Verify ultrafine milling feasibility under a protective atmosphere
Process route: Enclosed milling, protected transfer, and sealed collection

Trial review: Particle size, temperature behavior, oxygen and moisture conditions, and sample recovery.

Process Notes, Equipment and FAQ

Laboratory testing provides a way to assess the powder response while reviewing the protective atmosphere and collection route. The trial results help define the conditions to carry forward into pilot or production design; requirements depend on the specific electrolyte chemistry.

Related Equipment

Solid Electrolyte Processing SystemEnclosed processing with oxygen and dew-point monitoring. Lab Jet MillMaterial feasibility trials before production selection. Inert Gas Jet Milling SystemA protective-atmosphere route for suitable sensitive powders.

Common Questions

Can all electrolyte chemistries use the same process?

No. Material chemistry, feed condition, and sensitivity determine the trial requirements. Review these before selecting a protective gas and process route.

How are moisture and oxygen conditions assessed?

Discuss the required oxygen level, dew point, transfer method, and monitoring points before testing. The atmosphere specification must match the material.

Can I send samples straight away?

Please contact us first. Sample quantity, packaging, safety information, and shipping arrangements must be agreed for the proposed trial.

Test the Route with Your Own Material

Share your powder, target specification, and project stage to discuss a representative trial.

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