Copper. One more ore processing

KAZ Minerals presents Copper is one of the top seven metals known since the ancient time. Actually, humankind knows over 170 coppercontaining minerals. Copper melts at 1, 0830C. Copper and zinc alloy is known as brass. Copper and tin give us bronze, and alliance with nickel turns copper into melchior. Copper presents in Olympic medals of two values. Bronze medal contains about 97 of copper, and silver medal about 7. 5. However, we need our copper mined and processed first.