Apparatus for feeding filtered powder or other granular material, comprising: a feeder having a feeder loading area, a feeder unload area, and at least one feeder portion configured and arranged to convey a granular material from the feeder loading area to the feeder Feeder unloading area moves; and a screen disposed relative to the feeder unloading area such that it receives the granular material from the feeder, which screen has a mesh for separating larger granules from the granular material, the mesh net being inclined at an angle greater than than 0 °, is positioned opposite to the horizontal.
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