Raw mix ratios signification recommended value
The alumina ratio
The silica ratio
Exercise: what is the reason of a decrease of silica ratio?
LSF Lime Saturation Factor
To make clinker correctly, the raw mix must contain all the total lime (t-CaO) needed to:
o form the C4AF with the iron and one part of Al2O3
o form the C3A with the possibly remaining alumina
o form the C2S with all of the silica… then transform all of the C2S into C3S
Takes into account the required lime reduction
The lime saturation factor measures the little less of total lime
So in practice, C real – C theoretic
Influence of C3S / C2S
Exercise: answer 1
What is your diagnostic concerning third raw mix?