The plant, in Kincardine, will take around 650,000 tonnes of PFA annually from Scottish Power's Longannet and Cockenzie power stations.
The investment includes additional storage silos and new blending and packing equipment. A crucial part of the project is an electrostatic process which will remove unburned carbon from the ash, enabling its use in cements for the readymix and concrete sectors. The recovered carbon will be returned to the power stations as fuel.
Reuse of PFA will reduce the environmental impacts associated with aggregates extraction and cement manufacture. As well as being used in conventional cement products and construction engineering, the product will also be employed in a system for remediating contaminated land, Envirocem, which has been developed by Lafarge subsidiary Blue Circle.