The following article from Launcher USA and AMCM GmbH (an EOS Group company) highlights the use of Vacuum Conveyors, PowTReX sieving and powder recovery stations in such a case.
Click to the last page (101) in particular where Volkmann is mentioned twice
or start here at page 89 to read the full story.
Full Metal AM edition:
In addition, learn more about the beneficial use of advanced metal powder handling at Materials Solutions U.K. (a Siemens company) under this Link