How to Melt Scrap Gold

By Brian Adler

  • Overview

    Gold, soft and easily worked, can be hammered into a variety of shapes. It can be beaten into sheets that are thinner than paper. Yet scrap gold is most easily used by being cast into ingots. Casting requires the gold to be heated until it melts. The molten gold is poured out in the form if bricks, or ingots. These ingots can then be sold and re-fashioned. Here are the essentials of this transformative process.
    Melting gold in a crucible
    • Step 1

      Put your scrap gold into a crucible. Scrap gold is simply gold that is no longer being used. It includes jewelry that is old or no longer worn, as well as gold foil, wire and industrial fittings. A crucible is a pot that is designed to withstand extremely high heat. Gold melts at a temperature of 1947.52 degrees F. A jeweler's crucible is made of graphite. These can be purchased used for as little $7 or $8 on online auction sites, such as eBay. Just make sure that your crucible is not cracked or damaged. Place the crucible on a heat-resistant surface in a fireproof location.
    • Step 2

      Light the acetylene torch and aim it at the gold in the crucible. The flame of an acetylene torch reaches more than 5700 degrees F. Continue holding the flame against the gold until it melts completely. The gold should be liquid. Use a pair of crucible tongs to carefully lift the crucible and pour its contents into an ingot mold. A small pair of crucible tongs can be purchased for not much more than $30. Small graphite ingot molds are available in the price range of from $50 to $80. As with the crucible, the graphite is strong enough to withstand the heat of the molten gold.


    • Step 3

      Wait for the gold to cool. When it is cool and solid you will be able to remove it from the mold. Weigh your ingot on a suitable scale. As you will have made only a small ingot, you will want to use a scale that measures in at least gram increments. Check the current market price of your gold. Gold is sold in either price per gram, or by the Troy oz. There are 31.1 grams in 1 Troy oz. You can now sell your gold to any reputable dealer, or use it as a very valuable paperweight or doorstop.
    • Skill: Easy
    • Ingredients:
    • Scrap gold
    • Crucible
    • Acetylene torch
    • Crucible tongs
    • Tip: Before placing in the crucible, remove stones or other metals that might be attached to your gold.
    • Warning:
    • Wear safety goggles when using the acetylene torch. An acetylene flame is extremely bright and can damage the eyes. Also be very careful of fire. Do not wear loose clothing, and clear away all flammable materials.

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