Cement clinker is a semi-finished product used in the production of Portland cement. It consists of nodules (granules) ranging from 3 to 25 mm in diameter, typically grayish-black in color. Clinker is formed by heating raw materials like limestone, clay, and iron ore in a rotary kiln at high temperatures (around 1,400–1,500°C).
CHEMICAL PARAMETERS
RESULT*
UNIT
Loss on ignition (LOI)
0.36
%
Silica (SiO2)
21.12
%
Aluminum Oxide (AI2O3)
5.54
%
Iron Oxide (Fe2O3)
4.02
%
Calcium Oxide (CaO)
65.1
%
Magnesium Oxide (MgO)
1.28
%
Sulphuric Anhydrus (SO3)
0.48
%
Insoluble Residue (IR)
0.3
%
SM
2.2
%
MA
1.38
%
LSF
0.95
%
C3S
55.12
%
C2S
19.05
%
C3A
7.88
%
Applications of Clinker Cement:
• Used as the main ingredient in Portland cement production.
• Ground with gypsum to form different types of cement.
• Used in concrete, mortar, and construction materials. Filtration, and even cosmetics.
Advantages of Clinker:
✔ High strength and durability
✔ Allows for easy transportation before final cement grinding
✔ Essential for large-scale cement manufacturing
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