In cement plant Rotary kilns and Calciners are used which operate at around 1000°C to 1200°C temperature. The outgoing gases from these equipments are used to heat the incoming feed material and gases are cooled to around 250°C. using preheater cyclone assemblies. The solid material i.e. clinker coming out of the Rotary kiln is at around 1000°C and is cooled to 100-120°C temperature using ambient air. This generates hot air of about 220°C. About 60% of the hot air generated is used as combustion air in kiln furnaces & remaining is exhausted to atmosphere without heat recovery.

All these hot gases coming from Rotary kiln, calciner and clinker cooling are cement dust laden. Hence they are passed through Electrostatic Precipitators (ESPs)/ Bag Filters before exhausting to atmosphere.

All these hot gases coming from Rotary kiln, calciner and clinker cooling are cement dust laden. Hence they are passed through Electrostatic Precipitators (ESPs)/ Bag Filters before exhausting to atmosphere.