Module 2: Modern Steelmaking Practice
  Lecture 14: Modern trends in BOF steelmaking
 

Post Combustion
The oxidation of carbon to CO in BOF steelmaking is the principle reaction. In converter steelmaking CO produced during refining exits the furnace in exhaust system where it is combusted with the ambient air.

Combustion of CO to   produces large amount of thermal energy

(1)


Thus post combustion of CO in BOF and transferring the heat of combustion to the slag and metal offers an additional amount of energy. The amount of post combustion taking place in the furnace can be represented by post combustion ratio (P CR)
                      

(2)