![shiggavi](/content/images/forum/avatars/a0.gif)
11 posts
![wilfredzieri](/content/images/forum/avatars/a0.gif)
14 posts
Re: kiln feed SO3
the max. SO3 level has to be seen with several other indicators
preheater kiln: alkali/sulfur ratio = 0,5 ; max. %SO3 in clinker = 1,7
calciner kiln: alkali/sulfur ratio = 0,4 ; max. %SO3 in clinker = 2,0
total of Cl% + SO3 % in hot meal = 3,1%
Please note this is based on experience only and may vary from kiln to kiln or operating philosphy; therefore it shall be taken as a starting guidline
![technical cement forms](/content/images/forum/avatars/a0.gif)
85 posts
Re: kiln feed SO3
wilfredzieri:
the max. SO3 level has to be seen with several other indicators
preheater kiln: alkali/sulfur ratio = 0,5 ; max. %SO3 in clinker = 1,7
calciner kiln: alkali/sulfur ratio = 0,4 ; max. %SO3 in clinker = 2,0
total of Cl% + SO3 % in hot meal = 3,1%
Please note this is based on experience only and may vary from kiln to kiln or operating philosphy; therefore it shall be taken as a starting guidline