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Research targets dross and baghouse dust.

Research Targets Dross and Baghouse Dust

The Electric Power Research Institute's Center for Materials Production (EPRI/CMP) is funding research to develop a dc plasma arc technology for processing dross and baghouse dust to produce environmentally safe materials.

In addition, dc plasma arc melting of aluminum is being evaluated as a means of minimizing dross and baghouse dust formation.

The EPRI/CMP research is in response to the aluminum smelting industry's increased pressure from state and federal environmental agencies to minimize or eliminate land disposal of process wastes (such as aluminum dross residue, salt fluxes and baghouse dust).

Dross can contain heavy metals such as lead, cadmium and chromium - depending on the type of aluminum (ingot or scrap) being produced. About 600,000 tons of dross were produced in 1989.

Salt fluxes containing chlorides and fluorides are used to varying degrees, particularly by smelters melting scrap. This can add to the dross disposal problem.

To further complicate waste disposal problems, baghouse dust produced during melting can contain heavy metals such as lead and cadmium from melting painted siding and scrap from auto shredders.

EPRI/CMP's research results will be presented from 1 to 5 p.m. Sep 25 at the Royce Hotel, Pittsburgh (Greater Pittsburgh Airport area). The EPRI/CMP meeting also will include presentations on the latest in dross and baghouse dust disposal technology from industry and demonstration projects to evaluate specific technologies.

Interested utilities and their customers may attend by contacting: Bob Schmitt, CMP, Carnegie Mellon Research Institute, 4400 Fifth Ave, Pittsburgh, PA 15213-2683; 412/268-6442; fax 412/268-6852.
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Title Annotation:Electric Power Research Institute Center for Material Production investigating methods of processing dross and baghouse dust
Publication:Modern Casting
Date:Sep 1, 1990
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