Micronization Technology is a term that refers to the complex process of producing highly-refined powders by properly reducing the size of ordinary powder particles to dimensions below 10 micrometers.

Generally, this is a complicated and rather expensive process with wide applications in various fields, particularly in the pharmaceutical industry where the production of certain drugs, such as inhalers, requires the correct Particle Size Distribution (PSD) for inhaled APIs.

Process powder is fed tangentially at subsonic speeds (approximately 50 m/s) into the flat cylindrical milling chamber of the the fluid jet micronizer through a Venturi system using pressurized air or nitrogen. Once inside the milling chamber, powder particles are then accelerated to supersonic speeds (300 m/s) in a spiral movement by a series of jets around the perimeter of the micronizer.

The micronizing effect occurs when the slower incoming powder particles and the faster particles in the spiral path collide.  While centrifugal force retains the larger particles at the periphery of the milling chamber, the smaller particles exit with the exhaust gas from the center of the chamber.

Watch the micronization effect in a jet mill below:

This process works at a constant temperature (endothermic) and independently with the lowest consumption of process gas of similarly sized units available on the market.

The Particle Size Distribution (PSD) is controlled by adjusting two main parameters:
• PRESSURE: The energy used to micronize; increased pressure increases the micronization effect.
• FEED RATE: The concentration of product fed into the milling chamber; the greater the feed rate, the less the micronization effect. This is due to the fact that particles must have space to achieve proper acceleration before collision occurs.

• Enhanced hi-tech milling chamber geometry
• Nozzles designed for laminar jet streams and available with different grinding angles
• Optimized static classifier
• Elimination of the "caking" of sticky powders
• Narrow Gauss curve (particle size distribution)
• Lowest gas consumption on the market
• Elimination of the "blowback" phenomenon
• Optimised gas-solid separation and unique collecting point with yields close to 100%
• Balance and control of pressures within the whole micronisation system
• Reduction of contact surfaces – rapid cleaning and lower product loss
• Easy cleaning and validation operations
• Sterilizing system with hydrogen peroxide solution
• Inexpensive and easy to operate
• Capable of processing products with high solvent content (around 3000 ppm)
• Capable of processing sticky powders that do not flow well

Tecnologia Meccanica has over 40 years experience with Micronization Technology. It currently manufactures 10 different sizes of Fluid Jet Micronizers, ranging from a capacity of 0.50 to 1500 kg/h, and a throughput of 300-4000 kgs/hr.

Each size caters for a different requirement, depending on your application. If you are at all unsure or require any help, please do not hesitate to contact us and a technical engineer will be able to assist you.

To browse each solution, simply select your desired model from the available Fluid Jet Mill series list below:

J-20, J-25 & J-30 Series The capacity is from 0.50 g/hour to 100.00 g/hour, suitable for lab and R&D applications. More info

J-40, J-50 & J-70 Series The capacity is from 0.05 to 7.00 kg/hour, suitable for pilot, or small production applications. More info

J-100, J-125 & J-150 Series The capacity is from 0.50 to 30.00 kg/hour, suitable for small production applications. More info

J-200, J-300 & J-400 Series The capacity is from 0.50 to 350.00 kg/hour, suitable for medium to large production applications. More info

J-500, J-600, J-750 & J-900 Series The capacity is from 0.50 to 1500.00 kg/hour, suitable for large production applications. Contact us for more information.