CEMEX to study alternative fuels in cement making

Company signs one-year research agreement with Columbia University and City College of New York  

CEMEX have announced a collaboration agreement with the Earth Engineering Center (EEC) at Columbia University and City College of New York in which EEC will conduct a year-long study into the life-cycle effects of using alternative fuels in cement manufacturing.

This study will result in a better understanding of the role that alternative fuels play in society and the environment.

‘This collaboration with EEC underscores the urgency of searching for alternative fuels given the continuing rise of oil prices and the increase of waste in landfills,’ said Luis Farias, CEMEX’s senior vice-president of energy and sustainability. ‘The alternative-fuel strategy has already enabled CEMEX to avoid the emission of approximately 2.5 million tons of CO2 into the atmosphere per year.’

Led by Profs. Nickolas Themelis and Marco Castaldi, from Columbia University and the City College of New York, respectively, the study will focus on waste combustion technologies implemented in CEMEX kilns in the US and Mexico.

‘The study is of great interest to the EEC because cement production is the largest materials- based high-temperature process worldwide, and therefore cement kilns present a great potential to reduce the amount of wastes in landfills,’ explained Professor Themelis. ‘This study provides EEC with the opportunity to develop a knowledge position similar to that which it has attained in the global waste-to-energy technology and industry.’

Since 2005, CEMEX have invested more than US$175 million adjusting their production processes and installing equipment to use alternative fuels in their cement kilns.

In 2012, CEMEX achieved approximately a 27% alternative fuel substitution rate in their cement production, and the company is on track to achieve its target of a 35% alternative fuel substitution rate by 2015.