<p>An electrostatic waste separation process for abrasive blasting residues containing an abrasive media and a hazardous material such as lead-based paint. A preconditioning stage as well as a postconditioning stage is used in addition to the electrostatic separation step. Preferably the preconditioning stage consists of the following steps: (a) a size classification step; (b) a ferromagnetic separation step; and (c) a gravity separation step. The concentrated hazardous material separated by this process can then be packaged in a container which can be safely transported, stored or disposed of. The nonhazardous blasting media may be recycled and reused or disposed of as a nonhazardous material.</p>
申请公布号
DE69006374(T2)
申请公布日期
1994.05.19
申请号
DE1990606374T
申请日期
1990.02.23
申请人
PITTSBURGH MINERAL AND ENVIRONMENTAL TECHNOLOGY, INC., MONACA, PA.
发明人
GILBERT, STANLEY RICE, CORAOPOLIS, PENNSYLVANIA 15108;WEYAND, THOMAS EDWARD, BEAVER, PENNSYLVANIA 15009