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It's actually called the Lime Saturation Factor and it is one of three quality control factors used in cement manufacture. It represents the amount of lime (CaO) required to completely react with all of the silica (SiO2), alumina (Al2O3) and iron oxide (Fe2O3) in a cement kiln to produce the hydraulic minerals required for cement to set properly. It's formula is;-

LSF = (100 * CaO)/(2.8 * SiO2 + 1.18 * Al2O3 + 0.65 * Fe2O3)

The other two factors used to control cement clinker quality are;-

Silica Ratio (S.R.) = SiO2/(Al2O3 + Fe2O3)

and

Alumina Ratio (A.R.) = Al2O3/Fe2O3

Regards,

Ted.

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Q: What is lime saturated factor or LSF?
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