THE COMPLETE GUIDE TO JET MILLING & ULTRAFINE PARTICLE ENGINEERING

Jet milling is a fluid energy-based size reduction technology that utilizes high-velocity compressed gas (air or steam) to induce inter-particle collisions, resulting in particle fracture and size reduction. Unlike mechanical milling systems that rely on impact tools, grinding media, or rotating elements, jet milling operates using pure kinetic energy transfer. Core Principle:Particle-on-Particle Collision Particles are accelerated through nozzles at velocities approaching sonic or supersonic speeds. Within the grinding chamber, these particles collide with one another, fracturing along natural...

Jet miLLing performance is governed by three primary physical mechanisms: • Particles experience surface erosion due to turbulent flow Attrition & Shear ? Dominant mechanism in spiral jet mills • Particles collide at high velocity ^ brittle fracture occurs ? Internal circulation creates a centrifugal classification zone ° Fine particles exit • Coarse particles remain One of the most critical advantages of jet milling is its near-isothermal grinding enviorment. • No temperature rise from friction • Suitable for heat-sensitive materials • Chemical transformation Applications that depend on this:...

particle size distribution (psd) control Jet mills are capable of producing extremely tight and predictable PSD due to: • Adjustable feed rate • Internal classification dynamics Typical Capabilities: • Narrow distribution curve (low variance) • Bioavailability (pharma) • Reactivity (chemicals) • Flowability (powders) • Energy density (battery materials) • Brittle materials • Crystalline structures ChallengingMaterials: • Fibrous materials • Highly elastic polymers • Sticky or hygroscopic powders Solutions: • Pre-conditioning (drying, cooling) • Cryogenic jet milling (if required) • Feed system...

CONTAMINATION CONTROL & PURITY ENGINEERING Jet milling is widely used in industries requiring ultra-high purity. Why DP Jet Mills Excel: No moving parts in grinding zone Optional ceramic liners (Alumina, Silicon Carbide) Stainless steel construction (304 / 316) No lubrication inside product zone Result: Virtually zero contamination risk WEAR, LINERS & MATERIAL COMPATIBILITY DP Pulverizers offers a wide range of liner materials to match application needs: Alumina → ultra-high purity applications Silicon Carbide → extreme abrasion resistance Polyurethane / PTFE → soft or reactive materials Alloy...

Jet milling is widely used in industries requiring ° Gas pressure & flow rate ° Feed rate ° Nozzle configuration ° Classifier dynamics • Chamber geometry ultra-high purity. We engineer these variables together to achieve: t Target micron size ° Throughput optimization • Energy efficiency lab to pro scalability: duction One of the biggest challenges in micronization is scale-up consistency. DP solves this through: ° Geometrically scalable designs ° Proven data across multiple sizes (1" to 42") • Process replication from lab trials Predictable performance from R&D to full production @ www.dppulveriser.com...

[LITHIUM / GRAPHITE / CATHODE POWDERS] Challenge: • Tight PSD required for energy density • Avoid contamination • Maintain material integrity DP Solution: • Ceramic-lined jet mills • Ultra-tight classification • Contamination-free grinding Result: • Improved battery efficiency • Consistent electrode performance • Reduced defect rates Challenge: • Precise particle size for bioavailability • Strict contamination control DP Solution: • Stainless steel sanitary design • IQ/OQ documentation Result: • Improved drug absorption • Consistent dosing • Regulatory compliance @ www.dppulveriser.com www.dpmi...

Challenge: • Uniform color distribution • Agglomeration control • Fine particle dispersion High-energy particle Consistent micronization Result Brighter colors Better dispersion Improved coating performance MATERIALS Challenge: • Abrasive materials • Tight reaction control • Fine particle requirements DP Solution Wear-resistant liners High-energy grinding Controlled PSD Result Increased reactivity Improved product consistency Reduced downstream pro cessing @ www.dppulveriser.com www.dpmills.com

* Gentle particle reduction * Sanitary construction MINERALS CERAMICS Preserved nutritional value Enhanced solubility Consistent product quality • High hardness materials • Fine particle requirements • Silicon carbide / ceramic liners • Robust construction Silicon carbide / ceramic liners High-energy jet streams Robust construction @ www.dppulveriser.com www.dpmills.com

Jet milling is not just about reducing particle size—it is about engineering performance at the microscopic level. • Advanced fluid dynamics • Precision engineering • Decades of application experience To deliver systems that don’t just meet specifications— they redefine them. Bring us your material. We’ll engineer your result. fLab testing available Process optimization included Scalable from grams to tons

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