Abstract: Based on the analysis of clinker petrography and the diagnosis of thermal calibration, the main reason of core material in clinker is the lack of air flow in the pyro-system and the dense reduction atmosphere caused by incomplete combustion of pulverized coal in the kiln. The technical failure rate of rotary kiln has been greatly reduced by changing the punching plate flowmeter into a rotor scale, replacing the ordinary tilting plate valve with a fretting tilting plate valve, adding an air guide wall at the entrance of the tertiary air duct to the calciner, and replacing a new coal injection pipe, the quality and performance of clinker are improved significantly, and the energy consumption is decreased obviously.
