Slaked lime; excluding calcium oxide and hydroxide of heading no. 2825

HS code 252220 covers slaked lime, a versatile chemical compound that plays a crucial role in various industries. Slaked lime, also known as calcium hydroxide, is produced by the chemical reaction of calcium oxide (quicklime) with water. This essential material finds applications in a wide range of sectors, including construction, agriculture, water treatment, and industrial processes, making it a significant contributor to the global economy.

The production of slaked lime typically involves a two-step process. First, calcium oxide (quicklime) is produced by heating limestone (calcium carbonate) in a kiln at high temperatures, driving off carbon dioxide. In the second step, the quicklime is combined with water, resulting in the formation of calcium hydroxide, or slaked lime. This chemical reaction is carefully controlled to ensure the desired properties and quality of the final product.

The primary raw material for the production of slaked lime is limestone, a naturally occurring sedimentary rock composed primarily of calcium carbonate. In addition to the limestone feedstock, the manufacturing process requires a reliable supply of water and energy, typically in the form of heat generated from fuel sources. Specialized equipment, such as kilns, grinders, and mixing tanks, is also essential for the efficient production of slaked lime.

Slaked lime, the primary output of HS code 252220, finds widespread use in various industries. It is a key ingredient in the production of 252100 Unslaked lime, which is used extensively in the construction sector for mortar, plaster, and concrete. Slaked lime is also utilized in 281630 Calcium hydroxide, a compound with applications in water treatment, agriculture, and industrial processes. Additionally, slaked lime may be further processed to produce other calcium-based products, such as 252100 Unslaked lime and 281630 Calcium hydroxide.