Heating lime with aluminum. is the source for commercial production of calcium.
As an alloying agent, calcium is also employed in the synthesis of several metals. In addition to being utilized in the glass industry, calcium carbonate is used to manufacture cement and mortar. Additionally, toothpaste and mineral supplements include calcium carbonate. Acetylene gas and polymers are both made with calcium carbide.
Pure calcium metal is currently manufactured commercially by heating lime with aluminum, as opposed to the previous method of electrolysis of anhydrous calcium chloride. The metal slowly reacts with airborne nitrogen, oxygen, and water vapor to produce a yellow oxide, hydroxide, and nitride coating.
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