Carbides; of calcium, whether or not chemically defined

HS code 284910 covers the classification of calcium carbides, a group of chemical compounds that have a wide range of industrial applications. Calcium carbide is a versatile material used in the production of acetylene gas, steel manufacturing, and various other chemical processes. As a key component in several important industries, the global calcium carbide market plays a significant role in the broader economy.

Calcium carbide is primarily produced through the reaction of calcium oxide (lime) and carbon (typically in the form of coke) at high temperatures, typically around 2,000°C. This process, known as the calcium carbide process, involves the reduction of calcium oxide by carbon to form the calcium carbide compound. The resulting product is then crushed, graded, and packaged for distribution to various end-use industries.

The main inputs required for the production of calcium carbide include calcium oxide (lime), carbon sources such as coke or coal, and significant amounts of energy to sustain the high-temperature reaction. Additionally, specialized furnaces and other production equipment are necessary to facilitate the calcium carbide manufacturing process.

The primary output of HS code 284910 is calcium carbide, which is then used as a feedstock for the production of acetylene gas 281112 Acetylene, a widely used chemical in welding, cutting, and other industrial applications. Calcium carbide is also consumed by the steel industry 720211 Ferro-alloys, where it is used as a deoxidizing and desulfurizing agent, as well as in the production of various other chemicals and materials.