Copper is a metal chemical element and a trace element required by the human body. Copper is also the earliest metal discovered by mankind. It is a metal widely used by mankind and belongs to heavy metals.
Copper is the earliest metal used by humans. As early as in the prehistoric era, people began to mine open-air copper mines and use the obtained copper to make weapons, tools and other utensils. The use of copper had a profound impact on the progress of early human civilization. Copper is a metal found in the earth's crust and ocean. The content of copper in the earth's crust is about 0.01%. In some copper deposits, the copper content can reach 3% ~ 5%. Copper in nature exists mostly as a compound, namely copper minerals. Copper minerals and other minerals are aggregated into copper ore. The copper ore that has been mined becomes a copper concentrate with a higher copper content after beneficiation. It is the only metal that can be produced in large quantities in nature. It is also found in various ores (such as chalcopyrite, chalcopyrite, porphyrite, hematite, and malachite). And other alloy forms are used in industry, engineering, and processes.
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