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Abstract

This article briefly reviews the melt processing and casting of non-ferrous alloys, such as nickel alloys, titanium alloys, and lead alloys. It describes the lead refining steps, namely, copper drossing, softening, desilvering, zinc removal, bismuth removal, and final refining.

Abstract

Dross, which is the oxide-rich surface that forms on melts due to exposure to air, is a term that is usually applied to nonferrous melts, specifically the lighter alloys such as aluminum or magnesium. This article describes dross formation, economic implications of dross, in-plant enhancement or recovery of dross, and ways to reduce dross formation. It discusses the influence of melter type on dross generation and the influence of charge materials and operating practices on melt loss. Fluxing is a word applied in a broad sense to a number of melt treating methods. The article discusses in-furnace treatment with chemical fluxes.

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2008. "Casting of Nonferrous Alloys", Casting, Srinath Viswanathan, Diran Apelian, Raymond J. Donahue, Babu DasGupta, Michael Gywn, John L. Jorstad, Raymond W. Monroe, Mahi Sahoo, Thomas E. Prucha, Daniel Twarog

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