Chalk

HS code 250900 covers the classification of chalk, a naturally occurring mineral that has been used for centuries in a wide range of applications. Chalk is a soft, white, and porous sedimentary rock composed primarily of the mineral calcite (calcium carbonate). It is found in abundance in various regions around the world and plays a crucial role in numerous industries, contributing significantly to the global economy.

The production of chalk typically involves the extraction of the raw material from chalk deposits, followed by various processing steps. These may include crushing, grinding, and purification to remove impurities and achieve the desired purity and particle size. Depending on the intended use, the processed chalk may undergo further refinement, such as chemical treatment or micronization, to enhance its properties and performance.

The primary input for the chalk industry is the raw chalk material extracted from natural deposits. In addition, the production process may require various machinery and equipment, such as crushers, grinders, and processing plants, as well as energy sources and water for the processing operations. Depending on the specific applications, additional inputs may include chemical additives or specialized processing aids.

The main outputs of the chalk industry are the various grades and forms of processed chalk, which find applications in a diverse range of industries. These include 252010 Quicklime, 252020 Slaked lime, 252100 Limestone flux, 282550 Calcium carbonate, and 340220 Chalk for writing or drawing. Chalk is also used in the production of 252100 Limestone flux for the steel industry, as well as in the manufacture of 330499 Cosmetic and toilet preparations, 340220 Chalk for writing or drawing, and 370400 Photographic plates, film, paper, paperboard, and textiles, among other products.