The Micronizer is a fluid energy mill employing compressed air, steam or gas to produce particles less than one micron. The Micronizer advantage is in its very low particle size and narrow PSD (particle size distribution) making it the most popular jet mill available today. The Micronizer is used in a wide variety of applications where small particle size, increased surface area and narrow PSD are critical. Typical applications include TiO2, cosmetics, pigments, pharmaceutical powders, carbon black, agricultural chemicals, precious metals, resins, heat sensitive materials, and high performance materials.
The Micronizer utilizes fluid energy compressed air or gas to grind and classify, in a single chamber with no moving parts. Activated by high pressure air, the particles are accelerated into a high speed rotation in a shallow grinding chamber. As the particles impact on one another their size is reduced. Centrifugal force holds larger particles in the grinding rotation area until they have achieved the desired fine particle size. Centripetal force drags the desired particles towards the static classifier where they are allowed to exit upon achieving the correct particle size. The final particle size is controlled by varying the rate of the feed and propellant pressure.
Sturtevant, Inc. is an international manufacturer of material processing equipment including its patented Micronizer® jet mill which produces sub-micron sized particles, FCM an air-swept impact mill with integral classifier, Simpactor® and Infestroyer, centrifugal, pin-type impact mills and three types of high performance air classifiers that separate fine and coarse particles with precision and accuracy.
Time-Tested – Proven Success
Founded in 1883, Sturtevant was an early pioneer in size reduction, jet milling, micronization and air classification. The company introduced early versions of the jet mill and air classification systems. Sturtevant custom engineers its mills to suit the widest range of applications, extending beyond the traditional mineral processing markets into chemical, pharmaceutical, cosmetic, pigment, food and aggregate industries.