James A Giese, Age 791901 Legends Pkwy, Kingsland, TX 78639

4771579, Sep 20, 1988

Nov 6, 1986

6/927926

James A. Giese - Kent WA

B24C 900

51425

A process and apparatus are disclosed for recovering and cleaning contaminated particulate abrasives blast media for reuse. A first vacuum system vacuums up spent contaminated blast media from a work site and entrains it in an airstream. The entrained contaminated media is then projected onto a target surface that absorbs momentum of the contaminated media such that media and contaminates at least equal in weight to the media drop out of air suspension while contaminates lighter in weight than the media substantially remain in suspension. The contaminated media that drops out of entrainment falls into a rotating drum having apertured cylindrical wall surfaces that permit blast media to pass therethrough while retaining oversized contaminates. The rotating apertured drum is contained within a housing that is evacuated to substantially remove the lighter weight contaminates from the housing and, hence, from the media. The cleaned media passing through the rotating drum apertured surfaces is collected and returned to the blast cleaning process.