Method for removing magnesium from aluminum-magnesium alloys with engineered scavenger compound

摘要

A process of recovering magnesium from an aluminum-magnesium alloy using a two electrode cell, comprising: placing an engineered scavenger compound in an electrode basket of a two electrode cell; adjusting the temperature of a surrounding heating furnace to a temperature below at the melting point of an Al-Mg alloy under a salt bath in a crucible disposed in the cell; immersing the electrode basket containing the engineered scavenger compound into a molten salt bath and making an electrical connection between the crucible and the electrode basket until the engineered scavenger compound is charged with Mg to a point sufficient to cause cessation of voltage and current flow; and making an electrical connection between the basket electrode containing the engineered scavenger compound and Mg and a stainless steel rod electrode disposed within the molten salt bath, and applying a current through a DC voltage sufficient to cause captured Mg to leave the engineered scavenger compound and become electrodeposited on the stainless steel rod.