Cement is manufactured from 75-80% limestone and 20-25% Clay, or from raw materials containing the same chemical constituents. The raw materials are quarried and crushed, after which they are mixed in the correct proportions. The raw mix is then ground in a raw mill and subsequently burned in a rotary kiln at a temperature around 1450 °C. The raw materials undergo a number of complex chemical reactions in the burning phase and leave the kiln as cement clinker, consisting of agglomerate of clinker minerals. Finally the clinker ground to a fine powder cement in a Cement Mill, together with 4-6% gypsum. The gypsum serves to retard the setting time of the cement, which would otherwise harden, immediately with the addition of water.

FCCL is using dry process to manufacture cement in the dry process the raw mix is ground totally in dry condition, and it leaves the mill and enters the kiln as a powder called raw meal. In order to dry all moisture from the raw materials the raw mill is air swept with hot kiln gases or with hot air from an auxiliary furnace.
FCCL produces only Portland Cement.