Copper processing, the extraction of copper from its ores and the preparation of copper metal or chemical compounds for use in various products. In its pure form or as an alloy, copper (Cu) is one of the most important metals in society. The pure metal has a face-centred cubic crystal structure, and ...
In the United States, the first copper mine was opened in Branby, Connecticut, in 1705, followed by one in Lancaster, Pennsylvania, in 1732. Despite this early production, most copper used in the United States was imported from Chile until 1844, when mining of large deposits of high-grade copper ore around Lake Superior began.
The Frieda River copper and gold project is currently in the feasibility stage. Frieda River is one of the largest undeveloped mines in the Asia-Pacific region. Concentrate produced at the mine will be transported along the Sepik River on river-going barges.
The primary crusher at the mine, which feeds the main conveyor to the concentrator plant. The Los Pelambres deposit, located 200km north of Santiago and 45km east of Salamanca in Choapa Province, was discovered by one of Chilean copper's founding fathers, William Braden, in the 1920s.