What metals remain after copper-refining slimes are smelted?

When copper-refining slimes are smelted in a furnace, the process is designed to oxidize virtually all metals present except for a specific group of precious metals. The metals that remain after this smelting process are:

• Silver
• Gold
• Platinum-group metals

The resulting mixture of these remaining metals is known as doré. This material typically consists of the balance of silver, along with approximately 0.5 to 5 percent gold and 0.1 to 1 percent platinum-group metals, which is then cast into anodes for further electrolytic refining.1