Dear all!

I have kiln with 75m, dia 5m, draft at kiln inlet -7mbar, kilnhood -1mbar. now i use coal with GCV 6300, ash cont 16%, vol matter 8%. kilnfeed lsf 102, sr 2.42, ar 1.35.

Kiln shell temp at m40 from the end goes up and i cannot control to reduce it without controling kilnfeed.

Can i change burner position? and pri, sec air, cooling air?

Experts, ple tell me the flame length exactly inside the kiln!

Thanks alot!

Regards!