Non-aerated Flow and Handling Properties

Before dealing with tests relevant to powder flow and handling it is necessary to discuss briefly the powder properties which influence those operations. 

Some relationships between particle morphology and powder handling properties are now beginning to emerge10 but direct testing of the relevant secondary properties is still necessary. 

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This is another rather vague term used, meaning any measure of the ease with which a bulk powder flows out of a hopper or down a chute38. Any of the non-aerated flow and handling properties could go under this category but this section only deals with those measures of flowability not covered elsewhere in this guide. 

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