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CLINKER: Fundamental for Quality Cement Production

Portland cement clinker is a dark grey nodular material made by heating ground limestone and clay at a temperature of about 1400-1500°C. The nodules are ground up to a fine powder to produce cement, with a small amount of gypsum added to control the setting properties.

Typical Specifications as Received Basis
CaO % 63 – 68
SiO2 % 20 – 22
Al2O3 % 5 – 7
Fe2O3 % 2 – 4,5
MgO % 0,8 – 3
SO3 % 0,3 – 1
Na2O+0,658K2O % 0,4 – 1,2
C3S % 56 – 62
C2S % 10 – 23
C3A % 7 – 14
C4AF % 7 – 14
L.S.F. % 92 – 100
Density g/cm3 1,3 – 1,5
Setting Time Initial 110 – 150 min.
Final 200 – 250 min.
Compressive Strenght 2 days 18 – 23 MPa
28 days 46 – 52 MPa

 

Skills

Posted on

February 20, 2018