As of March 2021, the Guixi refinery in China, which is owned by Jiangxi Copper Corporation, was ranked as the world’s top copper refinery by capacity. At the time, the Guixi refinery had a refining capacity of 1.1 million metric tons of refined product per year. Shandong Fangyuan, with a capacity of 700 thousand metric tons, was the world’s second largest copper refinery. China is home to more than half of the world’s largest copper refineries.
If you are into table format data : here it is :
|Company / Refinery||Capacity in 1,000 metric tons|
|Onsan Refinery(South Korea)||440|
|El Paso(United States)||415|
|Las Ventanas (Chile)||410|