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  3. > for pgms the smelting and refining scope starts with the pgm flotation concentrate as an input and ends at the point where the i

for pgms the smelting and refining scope starts with the pgm flotation concentrate as an input and ends at the point where the i

Froth generated at the top of a flotation cell concentrates the platinum particles. The dried powder is then heated to extremely high temperatures to remove impurities. Air is blown over the matte that remains after smelting to eliminate unwanted iron and sulfur. At this point, the PGM content of the matte is now about 50 ounces (1.4 kg) per ton.

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