How Portland Cement Is Made

Portland cement is the main binding material in concrete. It is made from finely ground ingredients that include lime, iron, silica, and alumina. These materials give cement the properties it needs to hold concrete together.

The raw ingredients come from several common natural sources. Lime is ob...

Portland cement, the binding ingredient in concrete, is produced from calcareous materials, rich in lime and argillaceous materials, containing silica, alumina, and iron oxide.

The raw materials are crushed in crushers and stored in silos. These are then proportioned and advanced to the grinding mill and ground to powder form.

In t...