Kiln Control

I think that the response to such a change in the process would be kiln specific. Nobody can say by how much the back end temperature would decrease without knowledge of the specific kiln. If it were to decrease it might be due to the initial increase of load into the burning zone absorbing thermal energy from the main burner flame.

Thank you very much

I have another question in hand

if I keep all other parameters like Kiln speed, fuel rate and Kiln draft constant by increasing the feed rate what will happen to the gas draft after the  first cyclone and fan power? Will they increase or decrease and why?

If the kiln process is in equilibrium then if you increase the feed rate only the draft will fall as more CO2 from calcination will be formed. The preheater temperatures will fall as more feed encounters a lower specific volume of exhaust from the kiln. Eventually the kiln itself will cool as the feed is less prepared as it enters from the preheater. Free lime in clinker will rise and less C3S formation will accelerate the cooling of the kiln, which will eventually black-out as the temperature falls to below that required for C3S formation.