Abstract:

The CO2 of soft burnt dolomite discharged from A shaft of the kiln varies greatly. Polling inspector has found that the temperatures of the thermal insulation covering plates of No.18 and No.20 lances exceed 150℃. After analysis, the lances at the covering boards are burnt out and there is very high possibility that protection covers of lances are burnt out too. In order to determine the damage degree of the lances the operation of the kiln is stopped to carry out inspection of covering plates and it is found that No.2 and No.3 lances are broken by burning and the corresponding protection covers are burnt out. Aiming at the problems the safer and more reliable solutions are provided.