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10/18/2015 Powder Research Ltd - AOR device

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Powder CharacterisationAll companies manufacturing or simply using powders as feedstocks need to know quickly if theflowability of the powder is changing from day to day or week to week, in order to ensure that theprocessing equipment shall continue to behave according to its design specification

However, the flow behaviour of powders can sometimes change due to slight changes inprocess conditions, such as the relative humidity or temperature of the ambient air, or more

importantly, due to changes in the powder itself such as particle size distribution mean particlesize particle shape and roughness and even a change in chemical formulation that alters the

electrostatic properties of the material. There are many pieces of equipment available tomeasure important powder properties such as particle size, particle size distribution, and shear

strength. However, most of these instruments have a high capital cost and require skilledtechnicians to get reliable results. Moreover, because the handling properties of powders areseldom related linearly to variations in the parameters listed above, the results of measuringsuch properties may be insufficient to predict flow properties. Usually it is necessary to know only

whether todays batches have better or worse flowability than the powders produced yesterday.A piece of equipment that is light but robust, easy to use, only requires small powder samples

and relatively inexpensive, is available from Powder Research Ltd.

http://www.powderresearch.com/aor.htmlhttp://www.powderresearch.com/contact.htmlhttp://www.powderresearch.com/about.htmlhttp://www.powderresearch.com/con_.htmlhttp://www.powderresearch.com/in.htmlhttp://www.powderresearch.com/powder.htmlhttp://www.powderresearch.com/index.html

7/26/2019 Powder Research Ltd - AOR Device

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10/18/2015 Powder Research Ltd - AOR device

http://www.powderresearch.com/aor.html 2/2

The Powder Research Ltd AOR devicefor measuring angle of repose quickly and reliably was

developed by Professor Geldart & his research students working closely with a large UKchemical company and the Mark4 version is now available and can be used on a range ofpowders, even those that are very fine and cohesive.

For further information and price, contact Professor Derek Geldart at prfgeldart@aol.com

mailto:%20prfgeldart@aol.com