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    The Micronizer; Your FAQ’s Answered (Part 1 of 2)

    The Micronizer; Your FAQ’s Answered (Part 1 of 2)

    So, not to brag… but Sturtevant developed the Micronizer® jet mill over 60 years ago! This makes us both the worldwide expert in fluid energy milling as well as the most popular choice for this technology worldwide.  No other company has engineered and sold more fluid energy mills than the Micronizer® by Sturtevant.

    Enough about our history, let’s look at our present and our future with you, and how we can help you jet mill your materials.  Whether you have agricultural chemicals, pharmaceuticals, cosmetics, pigments, TiO2 or something else that needs to be processed to the finest particle size, check out the most common questions below so you can confirm that the Micronizer is the product for you!

    What typical particle size does the Micronizer produce?             

    The Micronizer usually generates particle size distributions that range from 0.25 to 10 microns, depending on the incoming feed size, the friability of the material, and the feed rate.  The Micronizer also has the flexibility to produce larger sizes up to around 45 microns.

    What kinds of materials are suitable for Micronization?              

    The best materials to reduce particle size in the Micronizer are friable (brittle) powders. If the materials are not brittle, the particles will just bounce off each other and eventually be discharged from the chamber without reduction.  But alternative methods can be used to increase friability. Contact us, if you’re unsure if your material is brittle enough.

    It’s also important to note that moisture, cohesion, stickiness and oils impact particle interaction.

    How is the particle size of a Micronized powder controlled?

    Feed rate is the main method of controlling particle size.  Slower feed rates produce finer products and fast feed rates produce larger particles.  Second to feed rate, changes in grinding air pressure will also change particle size.  Additional methods are used to precisely control final particle size.

    Can the Micronizer be used with other gases besides compressed air?

    Yes- any type of high pressure gas can be used. Nitrogen, argon, and superheated steam are common examples.  Check out the Steam Micronizer for more on using dense steam to create energy efficient particle size reduction.

    Stay tuned, we’ll be back with more of your FAQ’s for the Micronizer answered!

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