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Granules from fine powder: Agglomaration

by rollingstein
Tags: agglomaration, fine, granules, powder
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rollingstein
#1
Mar5-14, 07:14 AM
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I'm trying to convert a fine powder into hard granules (1mm - 3mm dia) & was trying to use a Fluidized Bed Dryer to do it. It seems to somewhat work but the granules stay crumbly & soft rather than the hard product I need.

My protocol is to mix ~20% starch as a binder & then add water & fluidize the bed with 50 C air for about 30 minutes in the hope that the particles agglomerate.

Any tips? What other parameters are relevant?
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Greg Bernhardt
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Jul2-14, 02:45 PM
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I'm sorry you are not generating any responses at the moment. Is there any additional information you can share with us? Any new findings?
rollingstein
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Jul7-14, 03:49 AM
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Quote Quote by Greg Bernhardt View Post
I'm sorry you are not generating any responses at the moment. Is there any additional information you can share with us? Any new findings?
No, I gave up on the problem. I couldn't find a way to get it to work.

Matcon
#4
Aug29-14, 09:49 AM
P: 25
Granules from fine powder: Agglomaration

The problem may be with the binder. Thinking about it from first principles, you need a binder that will wet the metal, but has a high enough surface tension (and high viscosity would help) to hold the granule together.

If I had to solve this problem, I would be looking at a fatty acid salt of the metal you are trying to agglomerate.


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