Milling Sensitive Powders

srowe
(not verified)
Posted in: , on 20. Apr. 2004 - 13:58

We have a material that shows some sensitivity to friction and impact energy using UN standard tests. The material is not highly sensitive and quite high energies are required to initiate decomposition.

Our client wishes to mill the powder and we are looking to advise them on low energy mills that would not initiate decomposition. Can anyone provide information on low energy milling systems (and conversely on mill types that should be avoided). Many thanks.

Steve Rowe

Milling Powder

Posted on 21. Apr. 2004 - 11:48

Steve,

U have not provided much info to go on.

I assume that it is already a powder and needs to be ground finer.

It will require a certain amount of energy to grind down ie kWhr/T.

Hence, perhaps the question is the efficiency of the mill design?

U could look at vertical roller mills with air swept design and static/dynamic separator. These are very efficent cf ball mills.

Also - depends on what particle size distribution U want.

Can grinding aids/water be added to improve the grinding action and reduce vibrations (for VRM's).

Suggest that U talk to a mill supplier who has several types of communition machines

Cheers

James

Richard Franzke - Quadro Engineering , Canada
(not verified)

Quadro Comil

Posted on 5. May. 2004 - 10:32

Steve

The Quadro Comil conical screen mill is a very gentle means of size reduction and is used in many industries with a large variety of materials.

We would need more information on the powder to ensure that we could reach the desired results of your client.

For further information on our product line you can visit www.quadro.com or our site listed here on Bulk-online

Best Regards

Richard