What is the difference between kiln shell hot spot & red spot?

Previous Post
Next Post

click here to Download the Most Important 13 Books in Cement Industry 

click here to Download the Most Important 13 Books in Cement Industry 

 

What is the difference between kiln shell hot spot & red spot?

 

By: Nael Shabana qatar.cement@yahoo.com

 

 

Hot spot is isolated area on the kiln shell with abnormally high temperature. It is quickly detected by a shell scanner or with a portable infra-red pyrometer. It can’t be seen during the day, and can hardly be seen at night (figure-2). Therefore, based on the visible radiation spectrum for hot surfaces, their maximum temperature must be below 550°C.

Red spot (figure-3) differ from hot spot in that it is visible at night. While a hot spot is just a warning, a red spot always demands some kind of action from the kiln operator.

 

click here to Download the Most Important 13 Books in Cement Industry 

click here to Download the Most Important 13 Books in Cement Industry 

 

 

Previous Post
Next Post

1 thought on “What is the difference between kiln shell hot spot & red spot?”

  1. Operationally a hot spot can be patch repaired for continuing operation for short period.The red spot is SOS warning to stop kiln and prepare for shut down of kiln for refractory replacement

Leave a Reply

%d bloggers like this: