Quicklime

Quicklime, also known as calcium oxide (CaO), is a caustic alkaline substance that has been used in various forms since ancient times. It is a white, caustic, alkaline crystalline solid at room temperature. The broadly used term "lime" connotes calcium-containing inorganic materials, which include carbonates, oxides and hydroxides of calcium, silicon, magnesium, aluminium, and iron predominate, such as limestone.

History

Quicklime has a long history of use, dating back to ancient civilizations. The Romans, for example, used it in the construction of their buildings and roads. It was also used in the production of mortar and plaster.

Production

Quicklime is produced by heating limestone in a process known as calcination, which involves the thermal decomposition of calcium carbonate (CaCO3) to produce calcium oxide (CaO) and carbon dioxide (CO2). This process is carried out in a furnace known as a lime kiln.

Uses

Quicklime has a wide range of uses in various industries. It is used in the production of cement, glass, and steel, as well as in water treatment, soil stabilization, and flue gas treatment. It is also used in the food industry as a food additive and in the production of sugar.

Safety

Quicklime is a highly reactive substance and can cause burns if it comes into contact with skin or eyes. It can also react violently with water, releasing heat and potentially causing fires or explosions. Therefore, it should be handled with care and appropriate safety measures should be taken.

See also

• Lime (material)
• Calcium hydroxide
• Calcium carbonate

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