technical cement forms:

Sir,

    How to check whether the clinker made is of Fe+2 or Fe+3.? 

I already posted the method to test for Fe+2 in clinker several months ago. You can find it at the link below;-

http://www.cemnet.com/cs/forums/permalink/2597/2605/ShowThread.aspx#2605 

technical cement forms:

We  noticed that in kiln operation when we have a strong burning zone temp then  the O2 % at kiln inlet also in good ratio .And sometimes On seeing the high burning zone temp if we try to reduce the fuel we noticed not able to control the kiln operation because the kiln torque is already on the min  range with high burning zone temp and cooler temp frequently getting disturbed.Whats your suggestion pl.?

This question is not really in my field of expertise. However, if your kiln torque is at minimum it indicates that the kiln is running fairly empty. Therefore, instead of  decreasing coal to lower the burning zone temperature, is there the possibility of increasing kiln feed rate instead?

Regards,

Ted.