Cement production

Production Process
The manufacturing of cement is a complex, high-tech, high temperature process. The chemistry of our raw materials, the fuels and the temperatures inside our kilns are all carefully controlled.

Watch our short animated Video on how cement is made here.

In simple terms there are three primary stages to cement production

1. Raw material extraction and preparation
This stage involves quarrying, blasting, crushing and milling of the raw materials. Blending and chemical control of the mineral composition is critical during this preparation phase. A finely powdered raw meal is produced which then moves into the second stage.

2. High temperature transformation
The raw meal is now heated inside the kiln system. Fuels are combusted, we used both fossil fuels and waste-derived fuels. The gas temperature inside the kilns exceed 2000°C. The raw meal is transformed into a molten mixture which flows inside the rotating kiln. At a temperature of 1450°C the minerals in this molten mix fuse to form new compounds known as ‘clinker’. The clinker moves out of the kiln and is quickly cooled and the heat is recycled back in to the process.

3. Milling of the final cement powder
In this final stage the clinker is milled into a fine cement powder. During milling other materials can be added in with the clinker to produce a range of cement types. The finished cement is either packed in to 25kg bags or stored in silos for bulk dispatch.

Cement is manufactured in compliance with National and International standards. In Ireland, National Standards Authority of Ireland (NSAI) carries out detailed annual audits of our members facilities, products and production processes.

The magic of cement
Unlike many binders and glues that ‘set’ by drying out cement is activated by adding water. It is the active hydraulic properties of the clinker minerals that give cement its exceptional binding characteristics which are essential for modern concrete construction