THORby CI
ProductsJet Mill

THOR Jet Mill

Compressed-air micronising with zero metal contact.

THOR Jet MillFluid energy

Particles grind each other

Nozzles fire compressed air into a flat spiral chamber. Particles accelerate into each other and shatter on collision — the machine has no moving parts and nothing but air touches the product at grinding speed.

Mechanism
Fluid energy
Fineness
D50 1 – 10 µm
Capacity
20 – 800 kg/h
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Working principle

Built-in centrifugal classification lets only finished fines escape the centre outlet; oversize keeps circulating. That is how it holds a D50 of 1–10 µm for APIs, pigments and ceramics.

FEEDAIR JETSCOLLECT

What the material passes through

  1. 1Venturi feed injectorCompressed air pulls the feed into the chamber
  2. 2Grinding nozzlesAngled jets set up the high-speed spiral
  3. 3Spiral grinding chamberCeramic or PU lined — particle-on-particle impact zone
  4. 4Classification zoneCentrifugal force returns oversize to the jets
  5. 5Cyclone + bag filterRecovers the micronised product from the air

What is a Jet Mill?

A fluidized bed jet mill is an advanced, fluid-energy grinding machine designed for the ultra-fine micronization of powders down to the sub-micron and single-digit-micron range (D50 from 1–10 µm). THOR by CI engineers the series to operate without any mechanical grinding media or physical screens.

This technology is the benchmark for high-purity grinding — producing sub-micron powders with no grinding media and no metallic wear, the preferred ultra-fine pulverizer for battery materials, specialty chemicals and advanced active pharmaceuticals.

Where Jet Mill sits on the particle-size scale

1 mm
200 µm
50 µm
10 µm
1 µm
Jet Mill
CoarseSub-micron

Advantages & limitations

Where fluid energy is unmatched — and the auxiliaries it demands.

Advantages

  • Zero metallic contamination

    Autogenous grinding and ceramic linings prevent metallic pickup — ideal for EV battery graphite and silicon anode materials.

  • Isothermal grinding (self-cooling)

    Compressed-air expansion absorbs heat (Joule-Thomson), keeping the chamber cool and protecting heat-sensitive APIs.

  • Precise sub-micron separation

    The integrated classifier wheel produces clean, narrow PSD curves with no coarse oversize fraction.

  • No mechanical wear components

    No gears, pins or screens — virtually no mechanical maintenance and immunity to hard-material damage.

Limitations to plan for

  • Substantial auxiliary equipment

    Needs a steady supply of oil-free compressed air — rotary-screw compressors, air receivers and refrigeration dryers.

  • High specific energy consumption

    Compressing air for fluid-energy milling costs significantly more energy per ton than mechanical impact mills.

  • Strict feed-sizing limits

    The fluidized bed can't take coarse feed — material must be pre-milled below 1.5 mm for efficient fluidization.

Milling, mixing & bulk handling

The THOR-JM Series runs under continuous negative pressure — no dust escapes into the factory atmosphere.

Hygienic feeder integration

Double-flapped sanitary rotary valves or loss-in-weight twin-screw feeders introduce powder without losing pressure.

Sub-micron cyclone receivers

Output is conveyed to multi-stage cyclones and pulse-jet baghouses with PTFE membrane filters that capture sub-micron particles.

Closed-loop gas circuits

For explosive or toxic materials, run nitrogen or argon in a closed recycling loop with continuous O₂ monitoring and makeup.

Other products

See the other four

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