Deagglomerating ultrafine powders

Posted in: , on 18. Sep. 2008 - 00:03

What would be the best way to deagglomerate 1-5 micron MgO powder?

Primary particles are in 0.2-0.5 range but they have bridges and I am thinking about jet milling, although I am not sure if that would be the best way.

Dry processing is preferable, cost is not an issue.

Also, production rate is quite low, order od 10s of kg/h.

Thanks,

Nick ■

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Re: Deagglomerating Ultrafine Powders

Posted on 18. Sep. 2008 - 06:47

Nick,

What do you mean by the term "bridges"? Do you know if your primary particles are mechanically interlocked or are they being bound up by electromagnetic forces? ■

Re: Deagglomerating Ultrafine Powders

Posted on 19. Sep. 2008 - 12:05

I mean mechanical, or better, chemical bonds between the particles. Actually, I have both, the "bridges" and electrostatic ones. ■

Agglomeration

Posted on 29. Sep. 2008 - 02:38

You may be able to consider any of a number of flow or dispersing aids in combination with intensive mixing. You may call me at 1+419-450-4404 to discuss if you desire. ■

Re: Deagglomerating Ultrafine Powders

Posted on 29. Sep. 2008 - 02:59

We have succesfully deaglomerated clay particles in this size range and gypsum particles in the 15 microns size range using the General Kinematic's Vibra-Drum Mill as a mixing drum with ceramic media. If you would like more information please send me an e-mail or visit www.generalkinematics.com for more information.

Best Regards,

Todd ■