Portland cement, aluminous cement, slag cement and similar hydraulic cements, except in the form of clinkers

cpc code 37440 covers a range of hydraulic cements, including Portland cement, aluminous cement, and slag cement. These materials are essential for the construction industry, providing the binding agent that holds together concrete, mortar, and other building materials. As a key component of modern infrastructure, the production and trade of these cements play a vital role in the broader economy, supporting activities across sectors such as 42000 Construction work.

The production of cements covered under cpc code 37440 typically involves the grinding and blending of various raw materials, including limestone, clay, and other mineral additives. The raw materials are first crushed, dried, and then heated to high temperatures in a kiln to undergo a process called calcination. This produces a partially-fused material known as clinker, which is then ground into a fine powder and combined with other ingredients to create the final cement product.

The main inputs required for the production of cements under cpc code 37440 include limestone, clay, gypsum, and other mineral additives. Specialized machinery, such as crushers, mills, and kilns, are also essential for the manufacturing process. Additionally, energy sources, such as coal or natural gas, are needed to power the high-temperature calcination stage.

The primary output of cpc code 37440 is hydraulic cement, which is used in the production of concrete, mortar, and other construction materials. These cements are then consumed by industries covered under 42000 Construction work, as well as 37450 Concrete, cement and plaster products, which use the cement to manufacture a variety of building products.