Method and apparatus for recovering platinum group elements
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United States of America Patent
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Oct 19, 2010
Grant Date -
Aug 4, 2005
app pub date -
Aug 4, 2003
filing date -
Aug 5, 2002
priority date (Note) -
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Abstract
A method for recovering platinum group elements comprises charging into a closed electric furnace and melting, together with flux components and a reducing agent, a platinum group element-containing substance to be processed and a copper source material containing copper oxide, sinking molten metal of primarily metallic copper below a molten slag layer of primarily oxides, and enriching the platinum group elements in the molten metal sunk below, and is characterized in that molten slag whose copper content has decreased to 3.0 wt % or less is discharged from the electric furnace and that the copper source material charged into the electric furnace is a granular copper source material of a grain diameter of not less than 0.1 mm and not greater than 10 mm.
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