Nowadays, burning unconventional fuels is a reality in the cement industry, combining the safe disposal of these residues with savings in fuel costs.

The impact of introducing alternative fuels in kilns or calciners must be carefully assessed in order to avoid increased specific energy consumption (kcal/kg of clinker), production losses, operational difficulties or impact on clinker quality.

CINAR‘s MI-CFD is unique in simulating the combustion of multiple fuels coupled with the calcination and clinker formation reactions. It evaluates the combustion of each fuel/residue, while considering both its physical (size, shape and density) and its chemical (composition and reactivity) aspects.

Through the MI-CFD simulations, the best locations for injecting each AFR (alternative fuels and raw material) fraction is determined, while evaluating the impact on emissions and ensuring complete combustion and high calcination levels. This enables increased thermal substitution rates of AFR combined with optimum plant performance.

Here are some examples of fuels that MI-CFD can simulate


Municipal waste




Contaminated Soil

See the Case

Learn about the success cases in which Cinar has helped choose the ideal fuels. Aavailable in Portuguese.