2023-01-15
The production process of copper foil typically involves several steps:
Mining and crushing of copper ore to obtain copper concentrate.
Smelting of copper concentrate to produce copper matte, which is a mixture of copper and iron sulfides.
Converting of copper matte to blister copper, which is a higher purity form of copper.
Refining of blister copper to produce 99.99% pure copper.
Rolling of copper to reduce its thickness and produce copper foil, which is typically between 6 and 30 microns