Cooper Ore & Concentrate

Cooper Ore & Concentrate

Copper is a reddish metal with a face-centered cubic crystalline structure. It reflects red and orange light and absorbs other frequencies in the visible spectrum, due to its band structure, so it as a nice reddish color. It is malleable, ductile, and an extremely good conductor of both heat and electricity. It is softer than zinc and can be polished to a bright finish. It is found in group Ib of the periodic table, together with silver and gold. Copper has low chemical reactivity. In moist air it slowly forms a greenish surface film called patina; this coating protects the metal from further attack.

Properties

Copper Cu
Atomic number 29
Atomic mass 63.546 g.mol -1
Electronegativity 1.9
Density 8.9 g.cm-3 at 20°C
Melting point 1083 °C
Boiling point 2595 °C
Electronic shell [ Ar ] 3d10 4s1

Applications

  1. Most copper is used for electrical equipment.
  2. Construction, such as roofing and plumbing.
  3. Industrial machinery, such as heat exchangers and alloys.
The main long established copper alloys are bronze, brass (a copper-zinc alloy), copper-tin-zinc, which was strong enough to make guns and cannons, and was known as gun metal, copper and nickel, known as cupronickel, which was the preferred metal for low-denomination coins. Copper is ideal for electrical wiring because it is easily worked, can be drawn into fine wire and has a high electrical conductivity.

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