Quicklime

Limestone deposit in the karst of Dinaric Alps near Sinj, Croatia.

Quicklime is a calcium-containing inorganic material composed primarily of oxides, and hydroxide, usually calcium oxide and/or calcium hydroxide. Quicklime is also referred to as lime, unslaked lime, or burnt lime.

Pure quicklime is a white, caustic, alkaline powder composed of calcium oxide.

Use

The word lime originates with its earliest use as building mortar and has the sense of sticking or adhering. These materials are still used in large quantities as building and engineering materials (including limestone products, cement, concrete, and mortar), as chemical feedstocks, and for sugar refining, among other uses. Lime industries and the use of many of the resulting products date from prehistoric times in both the Old World and the New World.^{[citation needed]}

Production Methods

Quicklime (or calcium oxide) is produced by the thermal decomposition of Lime at temperatures of between 850 and 1200°C. This can be achieved by placing a source of powdered calcium carbonate such as pulverized limestone or seashells into a simple wood fire for a period of about 1 hour. The resulting lime should be use promptly as it reacts with CO₂ from the atmosphere to reform calcium carbonate.

Dependencies

• Calcium
  • Lime
    • Quicklime
      • Lime concrete
      • Lime mortar
      • Limestone

See also

• Lime concrete
• Lime mortar
• Limestone
• Kiln

References

This article uses material from the Wikipedia article Lime_(material), which is released under the Creative Commons Attribution-ShareAlike 3.0 Unported License (view authors).

External links

• Lime, primitivetechnology.wordpress.com. 6 March 2018.
• Primitive Technology: Lime - Primitive Technology, 6 March 2018, YouTube