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Cryogenic Mills

Cryogenic Mills by DP Pulverizer – Ultra-Fine Grinding with Liquid Nitrogen Precision

DP Pulverizer Cryogenic Mills use liquid nitrogen for ultra-fine, contamination-free grinding of heat-sensitive, sticky, or elastic materials across food, pharma, plastics, and chemical industries.

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Industries & Applications

Cryogenic mills are used across industries that require clean, fine, or contamination-free grinding of challenging materials

Food & Nutraceuticals

Grinding herbs, spices, starches, proteins, omega-3s, and clean-label ingredients.

Pharmaceuticals

Micronizing APIs, polymers, and heat-sensitive compounds for improved consistency.

Elastomers & Plastics

Pulverizing rubber, TPEs, PU foams, and resins with elastic or sticky properties.

Chemicals & Pigments

Milling pigments, resins, and specialty additives for uniform dispersion.

Biomaterials & Recycling

Processing bio-based waste, spent batteries, and plastics for material recovery.

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What is a Cryogenic Mill?

A cryogenic mill is a specialized size reduction system that uses extremely low temperatures—typically achieved with liquid nitrogen or liquid CO₂—to embrittle materials before grinding.

This process allows materials that are soft, sticky, heat-sensitive, or elastic at room temperature to be ground cleanly and efficiently.

At DP Pulverizer, our cryogenic milling systems are designed for precision, control, and performance, making them ideal for demanding industrial and laboratory applications.

Cryogenic milling involves cooling materials below their glass transition temperature to make them brittle enough for grinding. Here’s how the process works:

  1. Material Pre-Cooling
    Feed material is exposed to liquid nitrogen (LN₂) or CO₂, reducing its temperature to cryogenic levels.
  2. Grinding Under Cryogenic Conditions
    The embrittled material is then fed into a cryogenic impact or attrition mill (e.g., hammer mill, pin mill, or ACM) where it is pulverized into ultra-fine particles.
  3. Cold Retention & Collection
    The system is kept cold throughout the process to prevent material softening or melting. Ground material is collected via cyclone separator or filter.
  • ✅ Cryogenic Feeder or Pre-Cooler
    Introduces and conditions the material with liquid nitrogen.
  • ✅ Grinding Mill
    Typically a pin mill, hammer mill, or air classifier mill adapted for cold conditions.
  • ✅ Insulated Grinding Chamber
    Maintains cryogenic temperatures during the grinding process.
  • ✅ Liquid Nitrogen Tank & Injection System
    Supplies and regulates LN₂ to ensure consistent cooling.
  • ✅ Cyclone & Dust Collection
    Captures finished product and controls fine particulates.
  • ✅ Control Panel with Temperature Monitoring
    Allows fine-tuning of temperature, feed rate, and grinding parameters.
  • ✅ Eliminates Melting or Smearing – Perfect for sticky or soft materials that are ungrindable at room temperature.
  • ✅ Ultra-Fine Particle Sizes – Down to sub-10 micron range depending on material and mill type.
  • ✅ Preserves Product Quality – Low temperatures prevent degradation of aroma, flavor, bioactivity, and molecular structure.
  • ✅ Improves Throughput – More efficient grinding due to brittleness of cryo-cooled materials.
  • ✅ Reduces Dust Explosion Risk – Inert atmosphere lowers ignition potential.
  • ✅ Clean & Hygienic – Ideal for pharmaceutical and food-grade environments.
  • ⚠️ Higher Operating Costs – Due to the consumption of liquid nitrogen or CO₂.
  • ⚠️ Specialized Equipment Required – Cryogenic-compatible mills and insulated systems increase capital cost.
  • ⚠️ System Complexity – Requires skilled operation and temperature control.
DP Mills USA Facility
63
Years of experience
DP Pulverizer Americas Inc

DP Pulverizer offers turnkey cryogenic milling solutions built on decades of expertise in size reduction and process integration.

Our systems are engineered for safety, reliability, and efficiency, with complete customization available for:

  • ✅ Food-grade & pharma-compliant designs
  • ✅ Inert gas options (LN₂, CO₂, argon)
  • ✅ Closed-loop or open-loop nitrogen systems
  • ✅ Batch or continuous processing
  • ✅ Pilot to full-scale production lines

Whether you’re grinding high-value spices or engineering advanced polymers, DP Pulverizer Cryogenic Mills are your gateway to breakthrough performance.

Trusted by industry leaders worldwide.

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