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With gold components for more than 25%. Not suitable for metal gold plated surfaces. If you want to do. Using nitric acid to dissolve Metal mixed with gold out. You can get scrap gold. Scrap gold bring smelting.Gold Smelting & Metal Melting Equipment - 911Metallurgist. Smelting Furnace of Iron Ore Laboratory-scale experiments showed that pig irons and steels of acceptable grade can be made by arc-furnace methods from east Texas siliceous ores containing less than 25 percent iron. Under highly reducing conditions,
