The crushed limestone and aggregates such as sand, clay and ironstone are blended together in a raw mill to a particle size of 90 micrometres, producing “kiln feed”

Cement Plant: The Manufacturing Process

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1Limestone (CaCO3) is taken from a quarry

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The limestone is fed into a crusher and then stored until needed

The clinker is mixed with additives, such as gypsum, and then ground in a cement mill, which creates cement

The cement is then packed and distributed to consumers

The kiln feed is blasted in a cement kiln at a temperature of 1450oC, causing clinkering to occur (small balls of up to 25mm diameter)

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Raw mill

Pre-heated tower

Cement storage silos

Packing warehouse

Raw material silos

Limestone storage and pre-blending unit

Rotary Kiln

Additives Silos

Cement millCrusher

Coal mill

Coal Storage