Exclusive to Ciment Quebec Inc. (CQI), Synergia™ is a unique “green” cement production process in North America. Synergia™ combines professional know-how, modern equipment, an innovative infrastructure, advanced techniques focused on energy efficiency, and the reduction of the carbon footprint for cement production.
Compared with the average for Quebec’s cement industry, the Synergia™ process of Ciment Quebec Inc. requires 30% less combustible energy during production, and generates up to 10% fewer greenhouse gases than competing clinkers and cement. Synergia™ allows up to 60% replacement of commonly used fossil fuels with alternative fuels. The process is in accordance with the air quality regulations of the Ministère du Développement durable, de l’Environnement et de la Lutte contre les changements climatiques (MDDELCC).
Cement production releases carbon dioxide (CO2) into the air in two stages: during decarbonation of the raw meal (finely ground limestone) and during fuel ignescence required to heat the raw meal. There is no technology that allows reduction of the CO2 emanations inherent in the process of transforming limestone into clinker. Calcination of limestone is an intrinsic step to the chemical transformation of it to transform it into clinker and then into cement. CO2 emissions from decarbonation (process emissions) represent more than 65% of all CO2 emissions generated by the cement plant, and cannot be reduced.
CO2 emissions from using combustible fuels are also hard to avoid, since the heat energy required for chemical transformation of the material is produced by this fuel. However, CQI is working to reduce as much as possible the carbon footprint resulting from combustion, by increasingly using various combustible materials instead of traditional fossil fuels, such as coal, natural gas, and heavy oil.
CQI heavily invested in alternative fuels, one of the cornerstones of the Synergia™ production process – one of the greenest processes in the world. The Synergia™ process involves: