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Clinker is a burnt component of cement which, combined with the addition of water, is responsible for curing. It is a hydraulic dark gray grained material, which consists primarily of Calcium Silicates. Cement clinker is created by heating and grinding limestone and clay at a temperature of around 1400º C. To achieve a complete reaction, a temperature of around 1450º C is necessary in the short-term.


The clinker consists of the following clinker phases:

Tricalcium Silicate

Dicalcium Silicate

Dicalcium Aluminate Ferrite

Tricalcium Aluminate

Free CaO


Due to increased demand for cement in Europe, Cemco delivers clinker to selected cement producers.