What factors does flowability powder depend on? Is percent of moisture in the powder in direct relation to the flowability of powder?

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Tejas Ganatra

Many factors can affect the flow property of powder,

One that you asked that is moisture - Yes increase in moisture content directly decreases the flow property of powder (by increasing cohesiveness of powder)...

Few others are:

Particle shape,

Particle size & size distribution,

Surface texture, Cohesiveness, Surface coating, etc...

R. J. Farnish

Don't forget to consider electrostatics. Shear testing will answer the majority of your needs in terms of scientifically evaluating flow behaviour.

Muhammad Tuseef Asghar

what is the difference encountered for solid and liquid flow? Elaborate in terms of viscosity.

can someone help??? plz