Cobalt is a chemical element with the symbol Co and atomic number 27. Cobalt is found in the Earth's crust only in chemically combined form, save for small deposits found in alloys of natural meteoric iron. The pure cobalt produced by reductive smelting is a hard, lustrous, silver-gray metal.

Cobalt is mostly used for superalloys, lithium-ion batteries, pigments, Lithium Ion Battery, Pigment, and Catalyst.

The Cobalt Concentrate, Compound, and Ash are used to make CoO3.

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