What is the effect of sand firing on preheater fan impeller in cement industry?

Question

i am working in cement company and we are facing pre-heater fan vibration problems due to coating. is there any specific methods to remove the coating while running of the plant? what is your opinion of putting some sand or clinker dust in preheater down commer to wash the coating on immpeller? i am requesting the cement personals to reply for this.

Answer 1

We have also faced problem of coupling breaking, motor shaft bent and cracks in foundation. The best possible way might be regular monitoring of vibration and go for manual cleaning at suitable time.

We are facing problem of excessive dust loading when preheater fan is restarted after tripping due to some reason. Dust is coming from the fan outlet duct. Any solution from some body is welcomed.