OPC · PPC · PSC · White · Rapid Hardening
Cement
Cement is the main binding material used in concrete and construction works. It is manufactured from raw materials like limestone, clay, sand and gypsum through an 8-step industrial process that turns raw meal into clinker and finally into the fine powder used at site.
Main raw materials
- Limestone (calcium source)
- Clay / Shale
- Sand
- Iron ore
- Gypsum
- Fly ash / Slag (for blended cement)
8-step manufacturing process
- Quarrying & Mining — limestone and clay extracted by drilling/blasting
- Crushing — large rocks broken down for easy handling
- Raw material grinding & mixing — ball mill / VRM produces raw meal
- Preheating — raw meal passes through preheater tower
- Kiln process — raw meal enters rotary kiln (~1450°C) forming clinker
- Clinker cooling — heat recovered, efficiency improved
- Cement grinding — clinker + gypsum (+ fly ash / slag) ground to fine powder
- Storage & packing — 50 kg bags, jumbo bags or bulk tankers
Types of cement supplied
- OPC (Ordinary Portland Cement)
- PPC (Portland Pozzolana Cement)
- PSC (Portland Slag Cement)
- White Cement
- Rapid Hardening Cement
Environmental measures
- Waste heat recovery
- Alternative fuels
- Fly ash & slag blending
- Carbon capture technologies
