Because quicklime decomposes in natural rocks at high temperature, except for the decomposition of carbon dioxide, the main component of quicklime is calcium oxide. Usually, natural rocks with calcium carbonate as the main component can be decomposed into carbon dioxide and calcium oxide after high temperature calcination. All natural rocks with calcium carbonate as the main component, such as limestone, can be used to produce lime.

Generally, quicklime contains quicklime, which solidifies slowly. If the lime slurry is solidified after hardening, it will expand and crack due to the expansion caused by solidification. In order to eliminate the harm of quicklime, lime should be "aged" for about 2 weeks after curing. Appearance is white (or gray, brown and white), amorphous, absorbing water and carbon dioxide in the air.

Use of quicklime

Lime can be used as a building material, and it can become hydrated lime after absorbing water or adding water. In this way, it can be mixed into lime slurry, lime paste and lime mortar as coating materials, and can also be used as filling materials for rubber, plastic and paper. In addition, in agriculture, quicklime can also be converted into fertilizer, which can improve the structure of soil and supplement calcium for plants.