Many metals, such as copper, zinc, tin, nickel, silver, gold, etc., are refined **through various metallurgical processes**. These processes involve extracting the metal from its ore and purifying it to obtain the desired level of purity and quality. The specific refining method may vary depending on the type of metal and the composition of its ore, but they all aim to separate impurities and extract the valuable metal. Some common methods include smelting, electrolysis, and chemical leaching, among others.