milling machines, grinders, crushers, grinding, micronizer,  pulverizer, impact mills, infestation destroyers, , hammermill, grinding by Sturtevant, Inc.
 
 

Micronizer FAQ’s

Back to Micronizer

1. 

What is the typical particle that can be achieved with a Micronizer?

 

The Micronizer will usually generate particle size distributions ranging from .5 Microns to 10 Microns, depending on the incoming Feed Size, the friability of the material and the feed rate.

2.

Can we minimize heat generation in the Micronizer?

 

The Micronizer does not generate any heat during milling. The operational temperature of the Micronizer is controlled by the temperature of the compressed gas entering the mill.

3. 

Will the Micronizer contaminate my powder?

 

The Micronizer offers one of the best ways to reduce a powder with very little risk of contamination. The mill uses particle on particle impact to reduce a powder, incidental contact will occur with the mills body. To further protect a powder from contamination Micronizers can be lined with Stainless Steel, Alumina Ceramic, Tungsten Carbide etc.

4. 

Can a Micronizer break down my polymeric powder?

 

If the polymer is friable (brittle) the Micronizer can successfully reduce it, if the material is not brittle the particles will bounce off of each other and will eventually be discharged from the chamber without reduction.

5. 

Can the Micronizer blend my dry ingredients?

 

The Micronizer can intensely blend dry powders to create a uniform product. Results are dependant on the ingredient characteristics.

6. 

Can a cyclone be substituted for the filter bags to collect my product?

 

This depends on the final particle size of the product and the type of cyclone being considered. Coarser product can be collected in a cyclone and the exhaust air can be sent to a central dust collector. Fine products will require a secondary filter to insure all of the product is collected.

7. 

What is the shape of Micronized particles?

 

The shape of Micronized particles is usually spherical. The particle on particle grinding method tends to first fracture any irregular portions.

8. 

Can Micronizers be used with other gases than compressed air?

 

Yes, Micronizer can be used with any type of gas, as long as it is at high pressure. Examples are Nitrogen, Argon and Superheated Steam.

9. 

Does a Micronizer classify particles?

 

Yes a Micronizer classifies particles as they are being milled, but not with a mechanical device. The Centrifugal Force in the milling chamber retains large particles on the outer diameter for further milling, while the Centripetal Force created by the vortex draws out smaller milled particles for collection. The Vortex Finder controls the size of the particles that can escape before they are fully milled.

10. 

How is the particle size of a Micronized powder controlled?

 

There are several ways to control the particle size of Micronized products. The feed rate varies the retention time in the mill chamber. The grind pressure varies the particle on particle impact velocity. The position of the vortex finder varies the size of the particles that can escape before they are fully milled.

 

Back to Micronizer

Sturtevant, Inc.
348 Circuit Street Hanover, MA 02339 USA
1-781-829-6501
1-800-992-0209
 
 
Copyright © 2012 Sturtevant, Inc. All rights reserved. Privacy Policy