Contents
GYPSUM SET POINT ACCORDING TO SO3 REQUIREMENT
SO3 REQUIREMENT = 1.8%
=(X – Y) / Z
X = REQUIRED % SO3 IN CEMENT (1.8%)
Y= SO3 % AGE IN CLINKER(0.4 TO 0.5%)
Z = SO3 %AGE IN GYPSUM (41 TO 42 %)
X – Y / Z
=(1.8/100) – (0 .4/100 ) / 41 / 100
=( 0.018 – 0.004 / .41)*100
SET POINT =3.41
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