Carbides; of calcium, whether or not chemically defined

HS code 284910 covers the classification of calcium carbides, which are an important class of inorganic compounds with a wide range of industrial applications. Calcium carbides are produced through the reaction of calcium oxide and carbon, and they find use in the manufacturing of acetylene gas, steel production, and various chemical processes. As a key input for several downstream industries, the calcium carbide market plays a vital role in the broader global economy.

The production of calcium carbides typically involves the heating of a mixture of calcium oxide (lime) and carbon (usually in the form of coke or coal) to high temperatures, often exceeding 2000°C. This process, known as the calcium carbide reaction, results in the formation of solid calcium carbide. The calcium carbide is then crushed, graded, and packaged for distribution to various end-use industries.

The main inputs required for the production of calcium carbides include calcium oxide (lime) and carbon sources such as coke or coal. Additionally, specialized high-temperature furnaces and equipment are necessary to facilitate the calcium carbide reaction and subsequent processing steps. The availability and cost of these raw materials and production infrastructure are crucial factors that influence the overall calcium carbide industry.

Calcium carbides produced under HS code 284910 are primarily used as a feedstock for the generation of acetylene gas, which is widely employed in welding and cutting applications. The output of this industry also finds use in the production of 720211 Ferro-manganese and 720221 Ferro-silicon, as well as various chemical synthesis processes. The calcium carbide industry serves as a vital supplier to numerous downstream industries, contributing to the overall economic activity.