Metal Powders

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Metal Powders

Freeze granulation can with advantage be used for granulation of various kinds of metal powders for the achievement of granules with homogenous distribution of metal particles and binder or pressing aid. However, large metal particles require normally an adaptation of the liquid medium in terms of viscosity to avoid critical settling during processing.

A specific advantage with freeze granulation regarding metals is that water in many cases can be used as the freeze drying ensures very limited oxidation versus conventional spray drying in air as no liquid water/air interface where oxidation take place is present.

Granulation of
Metal Powders
in Water