Precious-Metals Recovery System Also Has Environmental Controls
Appears in Print as: 'Gannon & Scott Precious-Metals Recovery System Also Has Environmental Controls'
Gannon & Scott Inc. will showcase its TRu3Tec thermal reduction system at Sur/Fin 2018, designed to recover precious metals from residual plating wastes while providing stringent environmental controls.
Gannon & Scott Inc. will showcase its TRu3Tec thermal reduction system, designed to recover precious metals from residual plating wastes while providing stringent environmental controls. It even can process combustible materials with low percentages of precious metals, such as ion-exchange resins, plating filters and rags, the company says. The three-stage system operates at relatively low temperatures to reduce the formation of hazardous byproducts and features pollution controls including cyclonic separation, wet scrubbing of exhaust gases and dust collection to further reduce waste emissions.Housed at the company’s Cranston, Rhode Island, metals recovery facility, the TRu3Tec system is an enhanced version of a similar system at its facility in Phoenix, Arizona. Both are zero-discharge plants for processing wastewater sludge and plating solutions. The company says TRu3Tec is part of a portfolio of services for fully processing scrap, from reel-to-reel and barrel plating to plating wire and stamped scrap to focus materials such as spent cathodes to plated parts requiring chemical stripping. Gannon & Scott also offers sampling and analytical services through its in-house commercial precious metals laboratory.
Research at the authors’ laboratories has focused on pulse/pulse reverse electrolysis on cathodic processes, such as hard chromium plating from non-hexavalent chemistries. This papers describes studies into pulse/pulse reverse electrolysis as applied to electrochemical metal removal processes, such as electropolishing and electroetching.
This paper provides processors with an extensive troubleshooting tool when conversion coating failures are encountered.
This paper is a peer-reviewed and edited version of a paper delivered at NASF SUR/FIN 2013 in Rosemont, Ill., on June 12, 2013.