| Chemical Formula / Property of Clinker | Value / Composition |
|---|---|
|
Synonyms
|
Cement clinker, clinker nodules, kiln feed product
|
|
Manufacturing Process Reference
|
Rotary kiln, 1450°C sintering temperature
|
|
Raw Materials for Clinker
|
Limestone (CaCO3), Clay (SiO2, Al2O3), Iron ore (Fe2O3), Shale, Sand
|
|
Main Mineral Phases (in clinker)
|
Alite (C3S), Belite (C2S), Celite (C3A), Brownmillerite (C4AF)
|
|
Lime Saturation Factor (LSF)
|
90% – 98% (typical for ordinary clinker)
|
|
Free Lime (CaO) in Clinker
|
< 2% (good quality), < 1% (premium)
|
|
Physical Form & Size
|
Dark grey to black nodules, 5–50 mm diameter
|
|
Purpose of Clinker
|
Intermediate product – ground with gypsum to make Portland cement
|
|
Annual Production Volume
|
Up to 3 million tons of clinker per kiln line per year
|
|
Chemical Oxide Composition (Typical)
|
CaO: 64-67%, SiO2: 21-23%, Al2O3: 4-6%, Fe2O3: 2-4%, MgO: < 2.5%
|
