The raw meal from storage silo is conveyed to preheater by elevator or air lift. Preheater are generally 5 stages or 6 stages according to plant capacity and degree of calcination required.
Each stage of Preheater consists of fabricated Cyclones and connecting gas Riser ducts. Cyclone and Riser ducts are specially shaped to have smoother flow, good collection efficiency with lesser pressure drop.
The calcined material from preheater is then fed to kiln where it is further calcined and sintered. The Clinker coming out kiln is cooled in grate cooler and is stored in clinker silo.